This is the last 1.x release for TensorFlow. We do not expect to update the 1.x branch with features, although we will issue patch releases to fix vulnerabilities for at least one year.
- As announced,
tensorflow
pip package will by default include GPU support (same astensorflow-gpu
now) for the platforms we currently have GPU support (Linux and Windows). It will work on machines with and without Nvidia GPUs.tensorflow-gpu
will still be available, and CPU-only packages can be downloaded attensorflow-cpu
for users who are concerned about package size. - TensorFlow 1.15 contains a complete implementation of the 2.0 API in its
compat.v2
module. It contains a copy of the 1.15 main module (withoutcontrib
) in thecompat.v1
module. TensorFlow 1.15 is able to emulate 2.0 behavior using theenable_v2_behavior()
function. This enables writing forward compatible code: by explicitly importing eithertensorflow.compat.v1
ortensorflow.compat.v2
, you can ensure that your code works without modifications against an installation of 1.15 or 2.0. - EagerTensor now supports numpy buffer interface for tensors.
- Add toggles
tf.enable_control_flow_v2()
andtf.disable_control_flow_v2()
for enabling/disabling v2 control flow. - Enable v2 control flow as part of
tf.enable_v2_behavior()
andTF2_BEHAVIOR=1
. - AutoGraph translates Python control flow into TensorFlow expressions, allowing users to write regular Python inside
tf.function
-decorated functions. AutoGraph is also applied in functions used withtf.data
,tf.distribute
andtf.keras
APIS. - Adds
enable_tensor_equality()
, which switches the behavior such that:- Tensors are no longer hashable.
- Tensors can be compared with
==
and!=
, yielding a Boolean Tensor with element-wise comparison results. This will be the default behavior in 2.0.
- Tensorflow code now produces 2 different pip packages:
tensorflow_core
containing all the code (in the future it will contain only the private implementation) andtensorflow
which is a virtual pip package doing forwarding totensorflow_core
(and in the future will contain only the public API of tensorflow). We don't expect this to be breaking, unless you were importing directly from the implementation. - TensorFlow 1.15 is built using devtoolset7 (GCC7) on Ubuntu 16. This may lead to ABI incompatibilities with extensions built against earlier versions of TensorFlow.
- Deprecated the use of
constraint=
and.constraint
with ResourceVariable. tf.keras
:OMP_NUM_THREADS
is no longer used by the default Keras config. To configure the number of threads, usetf.config.threading
APIs.tf.keras.model.save_model
andmodel.save
now defaults to saving a TensorFlow SavedModel.keras.backend.resize_images
(and consequently,keras.layers.Upsampling2D
) behavior has changed, a bug in the resizing implementation was fixed.- Layers now default to
float32
, and automatically cast their inputs to the layer's dtype. If you had a model that usedfloat64
, it will probably silently usefloat32
in TensorFlow2, and a warning will be issued that starts with Layer "layer-name" is casting an input tensor from dtype float64 to the layer's dtype of float32. To fix, either set the default dtype to float64 withtf.keras.backend.set_floatx('float64')
, or passdtype='float64'
to each of the Layer constructors. Seetf.keras.layers.Layer
for more information. - Some
tf.assert_*
methods now raise assertions at operation creation time (i.e. when this Python line executes) if the input tensors' values are known at that time, not during the session.run(). When this happens, a noop is returned and the input tensors are marked non-feedable. In other words, if they are used as keys infeed_dict
argument tosession.run()
, an error will be raised. Also, because some assert ops don't make it into the graph, the graph structure changes. A different graph can result in different per-op random seeds when they are not given explicitly (most often).
tf.estimator
:tf.keras.estimator.model_to_estimator
now supports exporting totf.train.Checkpoint
format, which allows the saved checkpoints to be compatible withmodel.load_weights
.- Fix tests in canned estimators.
- Expose Head as public API.
- Fixes critical bugs that help with
DenseFeatures
usability in TF2
tf.data
:- Promoting
unbatch
from experimental to core API. - Adding support for datasets as inputs to
from_tensors
andfrom_tensor_slices
and batching and unbatching of nested datasets.
- Promoting
tf.keras
:tf.keras.estimator.model_to_estimator
now supports exporting to tf.train.Checkpoint format, which allows the saved checkpoints to be compatible withmodel.load_weights
.- Saving a Keras Model using
tf.saved_model.save
now saves the list of variables, trainable variables, regularization losses, and the call function. - Deprecated
tf.keras.experimental.export_saved_model
andtf.keras.experimental.function
. Please usetf.keras.models.save_model(..., save_format='tf')
andtf.keras.models.load_model
instead. - Add an
implementation=3
mode fortf.keras.layers.LocallyConnected2D
andtf.keras.layers.LocallyConnected1D
layers usingtf.SparseTensor
to store weights, allowing a dramatic speedup for large sparse models. - Enable the Keras compile API
experimental_run_tf_function
flag by default. This flag enables single training/eval/predict execution path. With this 1. All input types are converted toDataset
. 2. When distribution strategy is not specified this goes through the no-op distribution strategy path. 3. Execution is wrapped in tf.function unlessrun_eagerly=True
is set in compile. - Raise error if
batch_size
argument is used when input is dataset/generator/keras sequence.
tf.lite
- Add
GATHER
support to NN API delegate. - tflite object detection script has a debug mode.
- Add delegate support for
QUANTIZE
. - Added evaluation script for COCO minival.
- Add delegate support for
QUANTIZED_16BIT_LSTM
. - Converts hardswish subgraphs into atomic ops.
- Add
- Add support for defaulting the value of
cycle_length
argument oftf.data.Dataset.interleave
to the number of schedulable CPU cores. parallel_for
: Add converter forMatrixDiag
.- Add
narrow_range
attribute toQuantizeAndDequantizeV2
and V3. - Added new op:
tf.strings.unsorted_segment_join
. - Add HW acceleration support for
topK_v2
. - Add new
TypeSpec
classes. - CloudBigtable version updated to v0.10.0.
- Expose
Head
as public API. - Update docstring for gather to properly describe the non-empty
batch_dims
case. - Added
tf.sparse.from_dense
utility function. - Improved ragged tensor support in
TensorFlowTestCase
. - Makes the a-normal form transformation in Pyct configurable as to which nodes are converted to variables and which are not.
ResizeInputTensor
now works for all delegates.- Add
EXPAND_DIMS
support to NN API delegate TEST: expand_dims_test tf.cond
emits a StatelessIf op if the branch functions are stateless and do not touch any resources.tf.cond
,tf.while
andif
andwhile
in AutoGraph now accept a nonscalar predicate if has a single element. This does not affect non-V2 control flow.tf.while_loop
emits a StatelessWhile op if the cond and body functions are stateless and do not touch any resources.- Refactors code in Quant8 LSTM support to reduce TFLite binary size.
- Add support of local soft device placement for eager op.
- Add HW acceleration support for
LogSoftMax
. - Added a function
nested_value_rowids
for ragged tensors. - Add guard to avoid acceleration of L2 Normalization with input rank != 4
- Add
tf.math.cumulative_logsumexp operation
. - Add
tf.ragged.stack
. - Fix memory allocation problem when calling
AddNewInputConstantTensor
. - Delegate application failure leaves interpreter in valid state.
- Add check for correct memory alignment to
MemoryAllocation::MemoryAllocation()
. - Extracts
NNAPIDelegateKernel
from nnapi_delegate.cc - Added support for
FusedBatchNormV3
in converter. - A ragged to dense op for directly calculating tensors.
- Fix accidental quadratic graph construction cost in graph-mode
tf.gradients()
.
This release contains contributions from many people at Google, as well as:
a6802739, Aaron Ma, Abdullah Selek, Abolfazl Shahbazi, Ag Ramesh, Albert Z. Guo, Albin Joy, Alex Itkes, Alex Sergeev, Alexander Pivovarov, Alexey Romanov, alhkad, Amit Srivastava, amoitra, Andrew Lihonosov, Andrii Prymostka, Anuj Rawat, Astropeak, Ayush Agrawal, Bairen Yi, Bas Aarts, Bastian Eichenberger, Ben Barsdell, Benjamin Peterson, bhack, Bharat Raghunathan, Bhavani Subramanian, Bryan Cutler, candy.dc, Cao Zongyan, Captain-Pool, Casper Da Costa-Luis, Chen Guoyin, Cheng Chang, chengchingwen, Chong Yan, Choong Yin Thong, Christopher Yeh, Clayne Robison, Coady, Patrick, Dan Ganea, David Norman, Denis Khalikov, Deven Desai, Diego Caballero, Duncan Dean, Duncan Riach, Dwight J Lyle, Eamon Ito-Fisher, eashtian3, EFanZh, ejot, Elroy Ashtian Jr, Eric Schweitz, Fangjun Kuang, Fei Hu, fo40225, formath, Fred Reiss, Frederic Bastien, Fredrik Knutsson, G. Hussain Chinoy, Gabriel, gehring, George Grzegorz Pawelczak, Gianluca Varisco, Gleb Popov, Greg Peatfield, Guillaume Klein, Gurpreet Singh, Gustavo Lima Chaves, haison, Haraldur TóMas HallgríMsson, HarikrishnanBalagopal, HåKon Sandsmark, I-Hong, Ilham Firdausi Putra, Imran Salam, Jason Zaman, Jason Zavaglia, jayhpark530, jefby, Jeff Daily, Jeffrey Poznanovic, Jekyll Lai, Jeroen BéDorf, Jerry Shih, jerryyin, jiakai, JiangXIAO, Joe Bowser, Joel Shapiro, Johan Gunnarsson, Jojimon Varghese, Joon, Josh Beal, Julian Niedermeier, Jun Wan, Junqin Zhang, Junyuan Xie, Justin Tunis, Kaixi Hou, Karl Lessard, Karthik Muthuraman, Kbhute-Ibm, khanhlvg, Koock Yoon, kstuedem, Kyuwon Kim, Lakshay Tokas, leike666666, leonard951, Leslie-Fang, Leslie-Fang-Intel, Li, Guizi, Lukas Folle, Lukas Geiger, Mahmoud Abuzaina, Manraj Singh Grover, Margaret Maynard-Reid, Mark Ryan, Matt Conley, Matthew Bentham, Matthew Denton, mbhuiyan, mdfaijul, Mei Jie, merturl, MichaelKonobeev, Michal W. Tarnowski, minds, mpppk, musikisomorphie, Nagy Mostafa, Nayana Thorat, Neil, Niels Ole Salscheider, Niklas SilfverströM, Niranjan Hasabnis, ocjosen, olramde, Pariksheet Pinjari, Patrick J. Lopresti, Patrik Gustavsson, per1234, PeterLee, Phan Van Nguyen Duc, Phillip Kravtsov, Pooya Davoodi, Pranav Marathe, Putra Manggala, Qingqing Cao, Rajeshwar Reddy T, Ramon ViñAs, Rasmus Diederichsen, Reuben Morais, richardbrks, robert, RonLek, Ryan Jiang, saishruthi, Saket Khandelwal, Saleem Abdulrasool, Sami Kama, Sana-Damani, Sergii Khomenko, Severen Redwood, Shubham Goyal, Sigrid Keydana, Siju Samuel, sleighsoft, smilu97, Son Tran, Srini511, srinivasan.narayanamoorthy, Sumesh Udayakumaran, Sungmann Cho, Tae-Hwan Jung, Taehoon Lee, Takeshi Watanabe, TengLu, terryky, TheMindVirus, ThisIsIsaac, Till Hoffmann, Timothy Liu, Tomer Gafner, Tongxuan Liu, Trent Lo, Trevor Morris, Uday Bondhugula, Vasileios Lioutas, vbvg2008, Vishnuvardhan Janapati, Vivek Suryamurthy, Wei Wang, Wen-Heng (Jack) Chung, wenxizhu, William D. Irons, winstonq, wyzhao, Xiaoming (Jason) Cui, Xinan Jiang, Xinping Wang, Yann-Yy, Yasir Modak, Yong Tang, Yongfeng Gu, Yuchen Ying, Yuxin Wu, zyeric, 王振华 (Zhenhua Wang)
TensorFlow 2.0 focuses on simplicity and ease of use, featuring updates like:
- Easy model building with Keras and eager execution.
- Robust model deployment in production on any platform.
- Powerful experimentation for research.
- API simplification by reducing duplication and removing deprecated endpoints.
For details on best practices with 2.0, see the Effective 2.0 guide
For information on upgrading your existing TensorFlow 1.x models, please refer to our Upgrade and Migration guides. We have also released a collection of tutorials and getting started guides.
- TF 2.0 delivers Keras as the central high level API used to build and train models. Keras provides several model-building APIs such as Sequential, Functional, and Subclassing along with eager execution, for immediate iteration and intuitive debugging, and
tf.data
, for building scalable input pipelines. Checkout guide for additional details. - Distribution Strategy: TF 2.0 users will be able to use the
tf.distribute.Strategy
API to distribute training with minimal code changes, yielding great out-of-the-box performance. It supports distributed training with Keras model.fit, as well as with custom training loops. Multi-GPU support is available, along with experimental support for multi worker and Cloud TPUs. Check out the guide for more details. - Functions, not Sessions. The traditional declarative programming model of building a graph and executing it via a
tf.Session
is discouraged, and replaced with by writing regular Python functions. Using thetf.function
decorator, such functions can be turned into graphs which can be executed remotely, serialized, and optimized for performance. - Unification of
tf.train.Optimizers
andtf.keras.Optimizers
. Usetf.keras.Optimizers
for TF2.0.compute_gradients
is removed as public API, useGradientTape
to compute gradients. - AutoGraph translates Python control flow into TensorFlow expressions, allowing users to write regular Python inside
tf.function
-decorated functions. AutoGraph is also applied in functions used with tf.data, tf.distribute and tf.keras APIs. - Unification of exchange formats to SavedModel. All TensorFlow ecosystem projects (TensorFlow Lite, TensorFlow JS, TensorFlow Serving, TensorFlow Hub) accept SavedModels. Model state should be saved to and restored from SavedModels.
- API Changes: Many API symbols have been renamed or removed, and argument names have changed. Many of these changes are motivated by consistency and clarity. The 1.x API remains available in the compat.v1 module. A list of all symbol changes can be found here.
- API clean-up, included removing
tf.app
,tf.flags
, andtf.logging
in favor of absl-py. - No more global variables with helper methods like
tf.global_variables_initializer
andtf.get_global_step
. - Add toggles
tf.enable_control_flow_v2()
andtf.disable_control_flow_v2()
for enabling/disabling v2 control flow. - Enable v2 control flow as part of
tf.enable_v2_behavior()
andTF2_BEHAVIOR=1
. - Fixes autocomplete for most TensorFlow API references by switching to use relative imports in API
__init__.py
files. - Auto Mixed-Precision graph optimizer simplifies converting models to
float16
for acceleration on Volta and Turing Tensor Cores. This feature can be enabled by wrapping an optimizer class withtf.train.experimental.enable_mixed_precision_graph_rewrite()
. - Add environment variable
TF_CUDNN_DETERMINISTIC
. Setting toTRUE
or "1" forces the selection of deterministic cuDNN convolution and max-pooling algorithms. When this is enabled, the algorithm selection procedure itself is also deterministic.
-
Many backwards incompatible API changes have been made to clean up the APIs and make them more consistent.
-
Toolchains:
- TensorFlow 2.0.0 is built using devtoolset7 (GCC7) on Ubuntu 16. This may lead to ABI incompatibilities with extensions built against earlier versions of TensorFlow.
- Tensorflow code now produces 2 different pip packages: tensorflow_core containing all the code (in the future it will contain only the private implementation) and tensorflow which is a virtual pip package doing forwarding to tensorflow_core (and in the future will contain only the public API of tensorflow). We don't expect this to be breaking, unless you were importing directly from the implementation.
Removed the
freeze_graph
command line tool;SavedModel
should be used in place of frozen graphs.
-
tf.contrib
:tf.contrib
has been deprecated, and functionality has been either migrated to the core TensorFlow API, to an ecosystem project such as tensorflow/addons or tensorflow/io, or removed entirely.- Remove
tf.contrib.timeseries
dependency on TF distributions. - Replace contrib references with
tf.estimator.experimental.*
for apis inearly_stopping.py
.
-
tf.estimator
:- Premade estimators in the tf.estimator.DNN/Linear/DNNLinearCombined family have been updated to use
tf.keras.optimizers
instead of thetf.compat.v1.train.Optimizer
s. If you do not pass in anoptimizer=
arg or if you use a string, the premade estimator will use the Keras optimizer. This is checkpoint breaking, as the optimizers have separate variables. A checkpoint converter tool for converting optimizers is included with the release, but if you want to avoid any change, switch to the v1 version of the estimator:tf.compat.v1.estimator.DNN/Linear/DNNLinearCombined*
. - Default aggregation for canned Estimators is now
SUM_OVER_BATCH_SIZE
. To maintain previous default behavior, please passSUM
as the loss aggregation method. - Canned Estimators don’t support
input_layer_partitioner
arg in the API. If you have this arg, you will have to switch totf.compat.v1 canned Estimators
. Estimator.export_savedmodel
has been renamed toexport_saved_model
.- When saving to SavedModel, Estimators will strip default op attributes. This is almost always the correct behavior, as it is more forwards compatible, but if you require that default attributes to be saved with the model, please use
tf.compat.v1.Estimator
. - Feature Columns have been upgraded to be more Eager-friendly and to work with Keras. As a result,
tf.feature_column.input_layer
has been deprecated in favor oftf.keras.layers.DenseFeatures
. v1 feature columns have direct analogues in v2 except forshared_embedding_columns
, which are not cross-compatible with v1 and v2. Usetf.feature_column.shared_embeddings
instead.
- Premade estimators in the tf.estimator.DNN/Linear/DNNLinearCombined family have been updated to use
-
tf.keras
:OMP_NUM_THREADS
is no longer used by the default Keras config. To configure the number of threads, usetf.config.threading
APIs.tf.keras.model.save_model
andmodel.save
now defaults to saving a TensorFlow SavedModel. HDF5 files are still supported.- Deprecated
tf.keras.experimental.export_saved_model
andtf.keras.experimental.function
. Please usetf.keras.models.save_model(..., save_format='tf')
andtf.keras.models.load_model
instead. - Layers now default to float32, and automatically cast their inputs to the layer's dtype. If you had a model that used float64, it will probably silently use float32 in TensorFlow 2, and a warning will be issued that starts with
Layer <layer-name>
is casting an input tensor from dtype float64 to the layer's dtype of float32. To fix, either set the default dtype to float64 withtf.keras.backend.set_floatx('float64')
, or passdtype='float64'
to each of the Layer constructors. Seetf.keras.layers.Layer
for more information.
-
tf.lite
:- Removed
lite.OpHint
,lite.experimental
, andlite.constant
from 2.0 API.
- Removed
-
Tensors are no longer hashable, but instead compare element-wise with
==
and!=
. Usetf.compat.v1.disable_tensor_equality()
to return to the previous behavior. -
Performing equality operations on Tensors or Variables with incompatible shapes an exception is no longer thrown. Instead
__eq__
returns False and__ne__
returns True. -
Removed
tf.string_split
from v2 API. -
Deprecated the use of
constraint=
and.constraint
with ResourceVariable. -
Add
UnifiedGRU
as the new GRU implementation for tf2.0. Change the default recurrent activation function for GRU fromhard_sigmoid
tosigmoid
, andreset_after
to True in 2.0. Historically recurrent activation ishard_sigmoid
since it is fast than 'sigmoid'. With new unified backend between CPU and GPU mode, since the CuDNN kernel is using sigmoid, we change the default for CPU mode to sigmoid as well. With that, the default GRU will be compatible with both CPU and GPU kernel. This will enable user with GPU to use CuDNN kernel by default and get a 10x performance boost in training. Note that this is checkpoint breaking change. If user want to use their 1.x pre-trained checkpoint, please construct the layer with GRU(recurrent_activation='hard_sigmoid', reset_after=False) to fallback to 1.x behavior. -
CUDNN_INSTALL_PATH
,TENSORRT_INSTALL_PATH
,NCCL_INSTALL_PATH
,NCCL_HDR_PATH
are deprecated. UseTF_CUDA_PATHS
instead which supports a comma-separated list of base paths that are searched to find CUDA libraries and headers.
Refer to our public project status tracker and issues tagged with 2.0
on GitHub for insight into recent issues and development progress.
If you experience any snags when using TF 2.0, please let us know at the TF 2.0 Testing User Group. We have a support mailing list as well as weekly testing meetings, and would love to hear your migration feedback and questions.
-
tf.contrib
:- Expose
tf.contrib.proto.*
ops intf.io
(they will exist in TF2)
- Expose
-
tf.data
:- Add support for TensorArrays to
tf.data Dataset
. - Integrate Ragged Tensors with
tf.data
. - All core and experimental tf.data transformations that input user-defined functions can span multiple devices now.
- Extending the TF 2.0 support for
shuffle(..., reshuffle_each_iteration=True)
andcache()
to work across different Python iterators for the same dataset. - Removing the
experimental_numa_aware
option fromtf.data.Options
. - Add
num_parallel_reads
and passing in a Dataset containing filenames intoTextLineDataset
andFixedLengthRecordDataset
. - Add support for defaulting the value of
cycle_length
argument oftf.data.Dataset.interleave
to the number of schedulable CPU cores. - Promoting
tf.data.experimental.enumerate_dataset
to core astf.data.Dataset.enumerate
. - Promoting
tf.data.experimental.unbatch
to core astf.data.Dataset.unbatch
. - Adds option for introducing slack in the pipeline to reduce CPU contention, via
tf.data.Options().experimental_slack = True
- Added experimental support for parallel batching to
batch()
andpadded_batch()
. This functionality can be enabled throughtf.data.Options()
. - Support cancellation of long-running
reduce
. - Now we use
dataset
node name as prefix instead of the op name, to identify the component correctly in metrics, for pipelines with repeated components. - Improve the performance of datasets using
from_tensors()
. - Promoting
unbatch
from experimental to core API. - Adding support for datasets as inputs to
from_tensors
andfrom_tensor_slices
and batching and unbatching of nested datasets.
- Add support for TensorArrays to
-
tf.distribute
:- Enable
tf.distribute.experimental.MultiWorkerMirroredStrategy
working in eager mode. - Callbacks are supported in
MultiWorkerMirroredStrategy
. - Disable
run_eagerly
and distribution strategy if there are symbolic tensors added to the model usingadd_metric
oradd_loss
. - Loss and gradients should now more reliably be correctly scaled w.r.t. the global batch size when using a
tf.distribute.Strategy
. - Set default loss reduction as
AUTO
for improving reliability of loss scaling with distribution strategy and custom training loops.AUTO
indicates that the reduction option will be determined by the usage context. For almost all cases this defaults toSUM_OVER_BATCH_SIZE
. When used in distribution strategy scope, outside of built-in training loops such astf.keras
compile
andfit
, we expect reduction value to be 'None' or 'SUM'. Using other values will raise an error. - Support for multi-host
ncclAllReduce
in Distribution Strategy.
- Enable
-
tf.estimator
:- Replace
tf.contrib.estimator.add_metrics
withtf.estimator.add_metrics
- Use
tf.compat.v1.estimator.inputs
instead oftf.estimator.inputs
- Replace contrib references with
tf.estimator.experimental.*
for apis in early_s in Estimator - Canned Estimators will now use keras optimizers by default. An error will be raised if tf.train.Optimizers are used, and you will have to switch to tf.keras.optimizers or tf.compat.v1 canned Estimators.
- A checkpoint converter for canned Estimators has been provided to transition canned Estimators that are warm started from
tf.train.Optimizers
totf.keras.optimizers
. - Losses are scaled in canned estimator v2 and not in the optimizers anymore. If you are using Estimator + distribution strategy + optimikzer v1 then the behavior does not change. This implies that if you are using custom estimator with optimizer v2, you have to scale losses. We have new utilities to help scale losses
tf.nn.compute_average_loss
,tf.nn.scale_regularization_loss
.
- Replace
-
tf.keras
:- Premade models (including Linear and WideDeep) have been introduced for the purpose of replacing Premade estimators.
- Model saving changes
model.save
andtf.saved_model.save
may now save to the TensorFlow SavedModel format. The model can be restored usingtf.keras.models.load_model
. HDF5 files are still supported, and may be used by specifyingsave_format="h5"
when saving.- Raw TensorFlow functions can now be used in conjunction with the Keras Functional API during model creation. This obviates the need for users to create Lambda layers in most cases when using the Functional API. Like Lambda layers, TensorFlow functions that result in Variable creation or assign ops are not supported.
- Add support for passing list of lists to the
metrics
argument in Kerascompile
. - Add
tf.keras.layers.AbstractRNNCell
as the preferred implementation for RNN cells in TF v2. User can use it to implement RNN cells with custom behavior. - Keras training and validation curves are shown on the same plot when using the TensorBoard callback.
- Switched Keras
fit/evaluate/predict
execution to use only a single unified path by default unless eager execution has been explicitly disabled, regardless of input type. This unified path places an eager-friendly training step inside of atf.function
. With this
- All input types are converted to
Dataset
. - The path assumes there is always a distribution strategy. when distribution strategy is not specified the path uses a no-op distribution strategy.
- The training step is wrapped in
tf.function
unlessrun_eagerly=True
is set in compile. The single path execution code does not yet support all use cases. We fallback to the existing v1 execution paths if your model contains the following: sample_weight_mode
in compileweighted_metrics
in compile- v1 optimizer
- target tensors in compile
If you are experiencing any issues because of this change, please inform us (file an issue) about your use case and you can unblock yourself by setting
experimental_run_tf_function=False
in compile meanwhile. We have seen couple of use cases where the model usage pattern is not as expected and would not work with this change. - output tensors of one layer is used in the constructor of another.
- symbolic tensors outside the scope of the model are used in custom loss functions. The flag can be disabled for these cases and ideally the usage pattern will need to be fixed.
- Mark Keras
set_session
ascompat.v1
only. tf.keras.estimator.model_to_estimator
now supports exporting totf.train.Checkpoint format
, which allows the saved checkpoints to be compatible withmodel.load_weights
.keras.backend.resize_images
(and consequently,keras.layers.Upsampling2D
) behavior has changed, a bug in the resizing implementation was fixed.- Add an
implementation=3
mode fortf.keras.layers.LocallyConnected2D
andtf.keras.layers.LocallyConnected1D
layers usingtf.SparseTensor
to store weights, allowing a dramatic speedup for large sparse models. - Raise error if
batch_size
argument is used when input is dataset/generator/keras sequence. - Update TF 2.0
keras.backend.name_scope
to use TF 2.0name_scope
. - Add v2 module aliases for losses, metrics, initializers and optimizers:
tf.losses = tf.keras.losses
&tf.metrics = tf.keras.metrics
&tf.initializers = tf.keras.initializers
&tf.optimizers = tf.keras.optimizers
. - Updates binary cross entropy logic in Keras when input is probabilities. Instead of converting probabilities to logits, we are using the cross entropy formula for probabilities.
- Added public APIs for
cumsum
andcumprod
keras backend functions. - Add support for temporal sample weight mode in subclassed models.
- Raise
ValueError
if an integer is passed to the training APIs. - Added fault-tolerance support for training Keras model via
model.fit()
withMultiWorkerMirroredStrategy
, tutorial available. - Custom Callback tutorial is now available.
- To train with
tf.distribute
, Keras API is recommended over estimator. steps_per_epoch
andsteps
arguments are supported with numpy arrays.- New error message when unexpected keys are used in sample_weight/class_weight dictionaries
- Losses are scaled in Keras compile/fit and not in the optimizers anymore. If you are using custom training loop, we have new utilities to help scale losses
tf.nn.compute_average_loss
,tf.nn.scale_regularization_loss
. Layer
apply and add_variable APIs are deprecated.- Added support for channels first data format in cross entropy losses with logits and support for tensors with unknown ranks.
- Error messages will be raised if
add_update
,add_metric
,add_loss
, activity regularizers are used inside of a control flow branch. - New loss reduction types:
AUTO
: Indicates that the reduction option will be determined by the usage context. For almost all cases this defaults toSUM_OVER_BATCH_SIZE
. When used withtf.distribute.Strategy
, outside of built-in training loops such astf.keras
compile
andfit
, we expect reduction value to beSUM
orNONE
. UsingAUTO
in that case will raise an error.NONE
: Weighted losses with one dimension reduced (axis=-1, or axis specified by loss function). When this reduction type used with built-in Keras training loops likefit
/evaluate
, the unreduced vector loss is passed to the optimizer but the reported loss will be a scalar value.SUM
: Scalar sum of weighted losses. 4.SUM_OVER_BATCH_SIZE
: ScalarSUM
divided by number of elements in losses. This reduction type is not supported when used withtf.distribute.Strategy
outside of built-in training loops liketf.keras
compile
/fit
.
- Wraps losses passed to the
compile
API (strings and v1 losses) which are not instances of v2Loss
class inLossWrapper
class. => All losses will now useSUM_OVER_BATCH_SIZE
reduction as default. model.add_loss(symbolic_tensor)
should work in ambient eager.- Update metric name to always reflect what the user has given in compile. Affects following cases
- When name is given as 'accuracy'/'crossentropy'
- When an aliased function name is used eg. 'mse'
- Removing the
weighted
prefix from weighted metric names.
- Allow non-Tensors through v2 losses.
- Add v2 sparse categorical crossentropy metric.
- Add v2 APIs for
AUCCurve
andAUCSummationMethod
enums. add_update
can now be passed a zero-arg callable in order to support turning off the update when settingtrainable=False
on a Layer of a Model compiled withrun_eagerly=True
.- Standardize the LayerNormalization API by replacing the args
norm_axis
andparams_axis
withaxis
. - Fixed critical bugs that help with DenseFeatures usability in TF2
-
tf.lite
:- Added evaluation script for
COCO
minival - Add delegate support for
QUANTIZE
. - Add
GATHER
support to NN API delegate. - Added support for TFLiteConverter Python API in 2.0. Contains functions from_saved_model, from_keras_file, and from_concrete_functions.
- Add
EXPAND_DIMS
support to NN API delegate TEST. - Add
narrow_range
attribute to QuantizeAndDequantizeV2 and V3. - Added support for
tflite_convert
command line tool in 2.0. - Post-training quantization tool supports quantizing weights shared by multiple operations. The models made with versions of this tool will use INT8 types for weights and will only be executable interpreters from this version onwards.
- Post-training quantization tool supports fp16 weights and GPU delegate acceleration for fp16.
- Add delegate support for
QUANTIZED_16BIT_LSTM
. - Extracts
NNAPIDelegateKernel
from nnapi_delegate.cc
- Added evaluation script for
-
TensorRT
- Add TensorFlow 2.0-compatible
TrtGraphConverterV2
API for TensorRT conversion. TensorRT initialization arguments are now passed wrapped in a named-tuple,TrtConversionParams
, rather than as separate arguments as inTrtGraphConverter
. - Changed API to optimize TensorRT enginges during graph optimization. This is now
done by calling
converter.build()
where previouslyis_dynamic_op=False
would be set. converter.convert()
no longer returns atf.function
. Now the funtion must be accessed from the saved model.- The
converter.calibrate()
method has been removed. To trigger calibration, acalibration_input_fn
should be provided toconverter.convert()
.
- Add TensorFlow 2.0-compatible
-
Other:
- Fix accidental quadratic graph construction cost in graph-mode
tf.gradients()
. - ResourceVariable's gather op supports batch dimensions.
- ResourceVariable support for
gather_nd
. ResourceVariable
andVariable
no longer acceptsconstraint
in the constructor, nor expose it as a @property.- Added gradient for
SparseToDense
op. - Expose a flag that allows the number of threads to vary across Python benchmarks.
image.resize
in 2.0 now supports gradients for the new resize kernels.image.resize
now considers proper pixel centers and has new kernels (incl. anti-aliasing).- Renamed
tf.image
functions to remove duplicate "image" where it is redundant. - Variadic reduce is supported on CPU Variadic reduce is supported on CPU
- Remove unused
StringViewVariantWrapper
. - Delete unused
Fingerprint64Map
op registration - Add broadcasting support to
tf.matmul
. - Add C++ Gradient for
BatchMatMulV2
. - Add
tf.math.cumulative_logsumexp
operation. - Add ellipsis (...) support for
tf.einsum()
. - Add expand_composites argument to all
nest.*
methods. - Added
strings.byte_split
. - Add a new "result_type" parameter to
tf.strings.split
. - Add name argument to
tf.string_split
andtf.strings_split
. - Extend
tf.strings.split
to support inputs with any rank. - Added
tf.random.binomial
. - Added
key
andskip
methods torandom.experimental.Generator
. - Extend
tf.function
with basic support for CompositeTensors arguments (such asSparseTensor
andRaggedTensor
). parallel_for.pfor
: add converters for Softmax, LogSoftmax, IsNaN, All, Any, and MatrixSetDiag.parallel_for
: add converters for LowerTriangularSolve and Cholesky.parallel_for
: add converters forLogMatrixDeterminant
andMatrixBandPart
.parallel_for
: Add converter forMatrixDiag
.parallel_for
: Add converters forOneHot
,LowerBound
,UpperBound
.parallel_for
: add converter forBroadcastTo
.- Add
pfor
converter forSqueeze
. - Add
RaggedTensor.placeholder()
. - Add ragged tensor support to
tf.squeeze
. - Update RaggedTensors to support int32 row_splits.
- Allow
LinearOperator.solve
to take aLinearOperator
. - Allow all dtypes for
LinearOperatorCirculant
. - Introduce MaxParallelism method
- Add
LinearOperatorHouseholder
. - Adds Philox support to new stateful RNG's XLA path.
- Added
TensorSpec
support for CompositeTensors. - Added
tf.linalg.tridiagonal_solve
op. - Added partial_pivoting input parameter to
tf.linalg.tridiagonal_solve
. - Added gradient to
tf.linalg.tridiagonal_solve
. - Added
tf.linalg.tridiagonal_mul op
. - Added GPU implementation of
tf.linalg.tridiagonal_matmul
. - Added
LinearOperatorToeplitz
. - Upgraded LIBXSMM to version 1.11.
- Uniform processing of quantized embeddings by Gather and EmbeddingLookup Ops.
- Correct a misstatement in the documentation of the sparse softmax cross entropy logit parameter.
- Add
tf.ragged.boolean_mask
. tf.switch_case
added, which selects a branch_fn based on a branch_index.- The C++ kernel of gather op supports batch dimensions.
- Fixed default value and documentation for
trainable
arg of tf.Variable. EagerTensor
now supports numpy buffer interface for tensors.- This change bumps the version number of the
FullyConnected
Op to 5. - Added new op:
tf.strings.unsorted_segment_join
. - Added HW acceleration support for
topK_v2
. - CloudBigtable version updated to v0.10.0 BEGIN_PUBLIC CloudBigtable version updated to v0.10.0.
- Expose
Head
as public API. - Added
tf.sparse.from_dense
utility function. - Improved ragged tensor support in
TensorFlowTestCase
. - Added a function
nested_value_rowids
for ragged tensors. - Added
tf.ragged.stack
. - Makes the a-normal form transformation in Pyct configurable as to which nodes are converted to variables and which are not.
ResizeInputTensor
now works for all delegates.tf.cond
emits a StatelessIf op if the branch functions are stateless and do not touch any resources.- Add support of local soft device placement for eager op.
- Pass partial_pivoting to the
_TridiagonalSolveGrad
. - Add HW acceleration support for
LogSoftMax
. - Add guard to avoid acceleration of L2 Normalization with input rank != 4
- Fix memory allocation problem when calling
AddNewInputConstantTensor
. - Delegate application failure leaves interpreter in valid state
tf.while_loop
emits a StatelessWhile op if the cond and body functions are stateless and do not touch any resources.tf.cond
,tf.while
and if and while in AutoGraph now accept a nonscalar predicate if has a single element. This does not affect non-V2 control flow.- Fix potential security vulnerability where decoding variant tensors from proto could result in heap out of bounds memory access.
- Only create a GCS directory object if the object does not already exist.
- Introduce
dynamic
constructor argument in Layer and Model, which should be set toTrue
when using imperative control flow in thecall
method. - Begin adding Go wrapper for C Eager API.
- XLA HLO graphs can be inspected with interactive_graphviz tool now.
- Add dataset ops to the graph (or create kernels in Eager execution) during the python Dataset object creation instead doing it during Iterator creation time.
- Add
batch_dims
argument totf.gather
. - The behavior of
tf.gather
is now correct whenaxis=None
andbatch_dims<0
. - Update docstring for gather to properly describe the non-empty
batch_dims
case. - Removing of dtype in the constructor of initializers and partition_info in call.
- Add
tf.math.nextafter
op. - Turn on MKL-DNN contraction kernels by default. MKL-DNN dynamically dispatches the best kernel implementation based on CPU vector architecture. To disable them, build with
--define=tensorflow_mkldnn_contraction_kernel=0
. tf.linspace(start, stop, num)
now always uses "stop" as last value (for num > 1)- Added top-k to precision and recall to keras metrics.
- Add a ragged size op and register it to the op dispatcher
- Transitive dependencies on :
pooling_ops
were removed. Some users may need to add explicit dependencies on :pooling_ops
if they reference the operators from that library. - Add
CompositeTensor
base class. - Malformed gif images could result in an access out of bounds in the color palette of the frame. This has been fixed now
- Add templates and interfaces for creating lookup tables
Tensor::UnsafeCopyFromInternal
deprecated in favorTensor::BitcastFrom
.- In
map_vectorization
optimization, reduce the degree of parallelism in the vectorized map node. - Add variant wrapper for
absl::string_view
. - Add OpKernels for some stateless maps.
- DType is no longer convertible to an int. Use
dtype.as_datatype_enum
instead ofint(dtype)
to get the same result. - Support both binary and -1/1 label input in v2 hinge and squared hinge losses.
- Added
LinearOperator.adjoint
andLinearOperator.H
(alias). - Expose CriticalSection in core as
tf.CriticalSection
. - Enhanced graphviz output.
- Add opkernel templates for common table operations.
- Fix callbacks do not log values in eager mode when a deferred build model is used.
SignatureDef
util functions have been deprecated.- Update
Fingerprint64Map
to use aliases - Add legacy string flat hash map op kernels.
- Add support for
add_metric
in the graph function mode. - Updating cosine similarity loss - removed the negate sign from cosine similarity.
- Changed default for gradient accumulation for TPU embeddings to true.
- Adds summary trace API for collecting graph and profile information.
- The
precision_mode
argument toTrtGraphConverter
is now case insensitive.
- Fix accidental quadratic graph construction cost in graph-mode
This release contains contributions from many people at Google, as well as:
1e100, a6802739, 4d55397500, a6802739, Abdullah Selek, abenmao, Abolfazl Shahbazi, Adam Richter, Adam Weiss, Ag Ramesh, Alan Du, Albin Joy, Alex, Alex Itkes, Alex Sergeev, Alexander Pivovarov, Alexey Romanov, alhkad, Aman Patel, Amit, Amit Kumar Jaiswal, Amit Srivastava, amoitra, Andreas Eberle, Andrew Lihonosov, Andy Craze, Anshuman Tripathy, Anthony Hsu, Anthony Platanios, Anuj Rawat, arp95, Arpit Shah, Armen Poghosov, armenpoghosov, Astropeak, Ashwin Ramaswami, Arpit Shah, Augustina Ragwitz, Aurelien Geron, AuréLien Geron, avasid, aweers, awesomealex1, Ayush Agrawal, Bas Aarts, Bastian Eichenberger, Bairen Yi, Bayberry Z, Ben Barsdell, Benjamin Peterson, bhack, Bharat Raghunathan, Bhavani Subramanian, Bin Fan, blairhan, BléNesi Attila, Bodin-E, Brandon Carter, Bryan Cutler, candy.dc, Cao Zongyan, Casper Da Costa-Luis, Chao Liu, Chen Guoyin, chenchc, chengchingwen, chie8842, Christian Hansen, Christoph Boeddeker, Christopher Yeh, Clayne Robison, Coady, Patrick, crafet, csukuangfj, ctiijima, Dan Jarvis, Dan Lazewatsky, Daniel Ingram, Daniel Rasmussen, Daniel Salvadori, Dave Airlie, David Norman, Dayananda V, delock, Denis Khalikov, Deven Desai, Dheeraj Rajaram Reddy, Diego Caballero, dmitrievanthony, Donovan Ong, Drew Szurko, Duncan Dean, Duncan Riach, Dustin Neighly, Dwight J Lyle, Eamon Ito-Fisher, eashtian3, Edward Forgacs, EFanZh, ejot, Elroy Ashtian Jr, Eric Schweitz, Evgeniy Polyakov, Fangjun Kuang, Federico Martinez, Fei Hu, Felix Lemke, Filip Matzner, FlashTek, fo40225, formath, FrançOis Chollet, frreiss, Fred Reiss, Frederic Bastien, Fredrik Knutsson, G. Hussain Chinoy, Gabriel, Gautam, gehring, Geoffrey Irving, George Grzegorz Pawelczak, Grzegorz Pawelczak, George Sterpu, Gianluca Varisco, Gleb Popov, Greg Peatfield, Guillaume Klein, Gurpreet Singh, Gustavo Lima Chaves, Gyoung-Yoon Ryoo, haison, Hanton Yang, HanGuo97, Haraldur TóMas HallgríMsson, Hari Shankar, hehongliang, Heungsub Lee, Hoeseong Kim, Huan Li (李卓桓), HåKon Sandsmark, I-Hong, I-Hong Jhuo, Ilham Firdausi Putra, Ilango R, Imran Salam, Innovimax, Jacky Ko, Irene Dea, Ivan Habernal, Jakub Lipinski, Jacky, Jason Zaman, Jason Zavaglia, jayhpark530, jcf94, jefby, Jeff Daily, Jeff Poznanovic, Jeffrey Poznanovic, Jekyll Lai, jer, Jeroen BéDorf, jerryyin, jhalakp, jiakai, Jia Qingtong, Jiankang, JiangXIAO, Joe Bowser, Joe Q, Joe Quadrino, Joel Shapiro, Johan Gunnarsson, Jojimon Varghese, Jonas Rauber, Jonathan Kyl, Jonathan, Joon, Joppe Geluykens, Joseph Friedman, Josh Beal, jtressle, Julian Niedermeier, Junqin Zhang, Justin Dujardin, Justin Tunis, jwu, K. Hodges, kaixih, Kaixi Hou, kjopek, Karl Lessard, Karl Weinmeister, Karthik Muthuraman, Kashif Rasul, Kay Zhu, Kbhute-Ibm, KDR, Keno Fischer, Kevin Mader, khanhlvg, Kilaru Yasaswi Sri Chandra Gandhi, Koan-Sin Tan, Koock Yoon, kouml, ktaebum, Kyuwon Kim, Lakshay Tokas, Laurent Le Brun, leike666666, leonard951, Leslie-Fang, Letian Kang, Li, Guizi, Loo Rong Jie, Lucas Hendren, Lukas Folle, Lukas Geiger, Luke Han, luxupu, lvli, Ma, Guokai, Mahmoud Abuzaina, Maksym Kysylov, Mandar Deshpande, manhyuk, Manraj Singh Grover, Marco Gaido, Marek Drozdowski, Margaret Maynard-Reid, Mark Ryan, mars20, Mateusz Chudyk, Matt Conley, mbhuiyan, mdfaijul, Mei Jie, Melissa Grueter, merturl, MichaelKonobeev, Michael KäUfl, Michal W. Tarnowski, MickaëL Schoentgen, Miguel Morin, Mihail Salnikov, Mikalai Drabovich, Mike Arpaia, Mike Holcomb, minds, monklof, Moses Marin, mpppk, Mr. Metal, Mshr-H, musikisomorphie, nammbash, Natalia Gimelshein, Nathan Luehr, Nayana-Ibm, Nayana Thorat, neargye, Neeraj Pradhan, Nehal J Wani, Neil, Nick, Nick Lewycky, Niels Ole Salscheider, Niklas SilfverströM, Niranjan Hasabnis, Nuka-137, Nutti, ocjosen, olicht, omeir1, P Sudeepam, Paige Bailey, Palmer Lao, Pan Daoxin, Pariksheet Pinjari, Pasquale Minervini, Patrick J. Lopresti, Patrik Gustavsson, Pavel Akhtyamov, Pavel Samolysov, PENGWA, per1234, PeterLee, Phan Van Nguyen Duc, Philipp Jund, Phillip Kravtsov, Pooya Davoodi, Pranav Marathe, Putra Manggala, Qingqing Cao, R S Nikhil Krishna, Rajeshwar Reddy T, Ramon ViñAs, Rasmus Diederichsen, Reuben Morais, robert, Rohit Gupta, Roland Zimmermann, Roman Soldatow, RonLek, Ruizhe, Ryan Jiang, saishruthi, Saleem Abdulrasool, Samantha Andow, Sami Kama, Sami Kama, Sana-Damani, Saurabh Deoras, sdamani, Sean Morgan, seanshpark, Sebastien Iooss, Serv-Inc, Severen Redwood, Shahzad Lone, Shashank Gupta, shashvat, Shashvat Chand Shahi, Shubham Goyal, Shashi, Sigrid Keydana, Siju, Siju Samuel, sleighsoft, smilu97, Snease-Abq, Son Tran, Spencer Schaber, sremedios, Srini511, srinivasan.narayanamoorthy, Steve Lang, Steve Nesae, Subin, Sumesh Udayakumaran, Sungmann Cho, sunway513, Supriya Rao, sxwang, Tae-Hwan Jung, Taehoon Lee, Takeo Sawada, Taylor Jakobson, Taylor Thornton, Ted Chang, TengLu, terryky, ThisIsIsaac, ThisIsPIRI, Thomas Deegan, Thomas Hagebols, tianyapiaozi, Till Hoffmann, Tim Zaman, tomguluson92, Tongxuan Liu, Trent Lo, Trevor Morris, TungJerry, Tyorden, Uday Bondhugula, v1incent, Vagif, Vasileios Lioutas, vbvg2008, vcarpani, Vijay Ravichandran, Vikram Tiwari,Viktor Gal, Vishwak Srinivasan, Vincent, Vishnuvardhan Janapati, Vitor-Alves, Vivek Suryamurthy, wangsiyu, wateryzephyr, WeberXie, Wei Wang, WeijieSun, Wen-Heng (Jack) Chung, wenxizhu, Will Battel, William D. Irons, winstonq, wyzhao, Xiaoming (Jason) Cui, Xiaoquan Kong, Xin, Xinping Wang, Yan Facai (颜发才), Yann-Yy, Yasir Modak, Yasuhiro Matsumoto, ymodak, Yong Tang, Yongfeng Gu, Younes Khoudli, Yuan Lin, Yuan (Terry) Tang, Yuchen Ying, Yves-Noel Weweler, zhangyujing, zjjott, zyeric, 王振华 (Zhenhua Wang), 黄鑫
- This is the first 1.x release containing the compat.v2 module. This module is required to allow libraries to publish code which works in both 1.x and 2.x. After this release, no backwards incompatible changes are allowed in the 2.0 Python API.
- Turn on MKL-DNN contraction kernels by default. MKL-DNN dynamically dispatches the best kernel implementation based on CPU vector architecture. To disable them, build with --define=tensorflow_mkldnn_contraction_kernel=0.
- Set default loss reduction as
AUTO
for improving reliability of loss scaling with distribution strategy and custom training loops.AUTO
indicates that the reduction option will be determined by the usage context. For almost all cases this defaults toSUM_OVER_BATCH_SIZE
. When used in distribution strategy scope, outside of built-in training loops such astf.keras
compile
andfit
, we expect reduction value to be 'None' or 'SUM'. Using other values will raise an error. - Wraps losses passed to the
compile
API (strings and v1 losses) which are not instances of v2Loss
class inLossWrapper
class. => All losses will now useSUM_OVER_BATCH_SIZE
reduction as default. - Disable
run_eagerly
and distribution strategy if there are symbolic tensors added to the model usingadd_metric
oradd_loss
. - tf.linspace(start, stop, num) now always uses "stop" as last value (for num > 1)
ResourceVariable
andVariable
no longer acceptsconstraint
in the constructor, nor expose it as a @property.- The behavior of tf.gather is now correct when axis=None and batch_dims<0.
- Only create a GCS directory object if the object does not already exist.
- In
map_vectorization
optimization, reduce the degree of parallelism in the vectorized map node. - Bug fix: loss and gradients should now more reliably be correctly scaled w.r.t. the global batch size when using a tf.distribute.Strategy.
- Updating cosine similarity loss - removed the negate sign from cosine similarity.
- DType is no longer convertible to an int. Use dtype.as_datatype_enum instead of int(dtype) to get the same result.
- Changed default for gradient accumulation for TPU embeddings to true.
- Callbacks now log values in eager mode when a deferred build model is used.
- Transitive dependencies on :pooling_ops were removed. Some users may need to add explicit dependencies on :pooling_ops if they reference the operators from that library.
- tf.keras.optimizers default learning rate changes:
- Adadelta: 1.000 to 0.001
- Adagrad: 0.01 to 0.001
- Adamax: 0.002 to 0.001
- NAdam: 0.002 to 0.001
- Documentation
- Deprecations and Symbol renames.
- Remove unused StringViewVariantWrapper
- Delete unused Fingerprint64Map op registration
- SignatureDef util functions have been deprecated.
- Renamed tf.image functions to remove duplicate "image" where it is redundant.
- tf.keras.experimental.export renamed to tf.keras.experimental.export_saved_model
- Standardize the LayerNormalization API by replacing the args
norm_axis
andparams_axis
withaxis
. - Tensor::UnsafeCopyFromInternal deprecated in favor Tensor::BitcastFrom
- Keras & Python API
- Add v2 module aliases for:
- tf.initializers => tf.keras.initializers
- tf.losses => tf.keras.losses & tf.metrics => tf.keras.metrics
- tf.optimizers => tf.keras.optimizers
- Add tf.keras.layers.AbstractRNNCell as the preferred implementation of RNN cell for TF v2. User can use it to implement RNN cell with custom behavior.
- Adding
clear_losses
API to be able to clear losses at the end of forward pass in a custom training loop in eager. - Add support for passing list of lists to the
metrics
param in Kerascompile
. - Added top-k to precision and recall to keras metrics.
- Adding public APIs for
cumsum
andcumprod
keras backend functions. - Fix: model.add_loss(symbolic_tensor) should work in ambient eager.
- Add name argument to tf.string_split and tf.strings_split
- Minor change to SavedModels exported from Keras using tf.keras.experimental.export. (SignatureDef key for evaluation mode is now "eval" instead of "test"). This will be reverted back to "test" in the near future.
- Updates binary cross entropy logic in Keras when input is probabilities. Instead of converting probabilities to logits, we are using the cross entropy formula for probabilities.
- Raw TensorFlow functions can now be used in conjunction with the Keras Functional API during model creation. This obviates the need for users to create Lambda layers in most cases when using the Functional API. Like Lambda layers, TensorFlow functions that result in Variable creation or assign ops are not supported.
- Keras training and validation curves are shown on the same plot.
- Introduce
dynamic
constructor argument in Layer and Model, which should be set to True when using imperative control flow in thecall
method. - Removing of dtype in the constructor of initializers and partition_info in call.
- New ops and improved op functionality
- Add OpKernels for some stateless maps
- Add v2 APIs for AUCCurve and AUCSummationMethod enums. #tf-metrics-convergence
- Add tf.math.nextafter op.
- Add CompositeTensor base class.
- Add tf.linalg.tridiagonal_solve op.
- Add opkernel templates for common table operations.
- Added support for TFLite in TensorFlow 2.0.
- Adds summary trace API for collecting graph and profile information.
- Add batch_dims argument to tf.gather.
- Add support for
add_metric
in the graph function mode. - Add C++ Gradient for BatchMatMulV2.
- Added tf.random.binomial
- Added gradient for SparseToDense op.
- Add legacy string flat hash map op kernels
- Add a ragged size op and register it to the op dispatcher
- Add broadcasting support to tf.matmul.
- Add ellipsis (...) support for tf.einsum()
- Added LinearOperator.adjoint and LinearOperator.H (alias).
- Added GPU implementation of tf.linalg.tridiagonal_solve.
- Added strings.byte_split
- Add RaggedTensor.placeholder()
- Add a new "result_type" parameter to tf.strings.split
add_update
can now be passed a zero-arg callable in order to support turning off the update when settingtrainable=False
on a Layer of a Model compiled withrun_eagerly=True
.- Add variant wrapper for absl::string_view
- Add expand_composites argument to all nest.* methods.
- Add pfor converter for Squeeze.
- Bug fix for tf.tile gradient
- Expose CriticalSection in core as tf.CriticalSection.
- Update Fingerprint64Map to use aliases
- ResourceVariable support for gather_nd.
- ResourceVariable's gather op supports batch dimensions.
- Variadic reduce is supported on CPU
- Extend tf.function with basic support for CompositeTensors arguments (such as SparseTensor and RaggedTensor).
- Add templates and interfaces for creating lookup tables
- Post-training quantization tool supports quantizing weights shared by multiple operations. The models made with versions of this tool will use INT8 types for weights and will only be executable interpreters from this version onwards.
- Malformed gif images could result in an access out of bounds in the color palette of the frame. This has been fixed now
- image.resize now considers proper pixel centers and has new kernels (incl. anti-aliasing).
- Performance
- Turn on MKL-DNN contraction kernels by default. MKL-DNN dynamically dispatches the best kernel implementation based on CPU vector architecture. To disable them, build with --define=tensorflow_mkldnn_contraction_kernel=0.
- Support for multi-host ncclAllReduce in Distribution Strategy.
- Expose a flag that allows the number of threads to vary across Python benchmarks.
- TensorFlow 2.0 Development
- Add v2 sparse categorical crossentropy metric.
- Allow non-Tensors through v2 losses.
- Add UnifiedGRU as the new GRU implementation for tf2.0. Change the default recurrent activation function for GRU from 'hard_sigmoid' to 'sigmoid', and 'reset_after' to True in 2.0. Historically recurrent activation is 'hard_sigmoid' since it is fast than 'sigmoid'. With new unified backend between CPU and GPU mode, since the CuDNN kernel is using sigmoid, we change the default for CPU mode to sigmoid as well. With that, the default GRU will be compatible with both CPU and GPU kernel. This will enable user with GPU to use CuDNN kernel by default and get a 10x performance boost in training. Note that this is checkpoint breaking change. If user want to use their 1.x pre-trained checkpoint, please construct the layer with GRU(recurrent_activation='hard_sigmoid', reset_after=False) to fallback to 1.x behavior.
- TF 2.0 - Update metric name to always reflect what the user has given in
compile. Affects following cases 1. When name is given as
'accuracy'/'crossentropy' 2. When an aliased function name is used eg.
'mse' 3. Removing the
weighted
prefix from weighted metric names. - Begin adding Go wrapper for C Eager API
- image.resize in 2.0 now supports gradients for the new resize kernels.
- removed tf.string_split from v2 API
- Expose tf.contrib.proto.* ops in tf.io (they will exist in TF2)
- "Updates the TFLiteConverter API in 2.0. Changes from_concrete_function to from_concrete_functions."
- Enable tf.distribute.experimental.MultiWorkerMirroredStrategy working in eager mode.
- Support both binary and -1/1 label input in v2 hinge and squared hinge losses.
- TensorFlow Lite
- "Adds support for tflite_convert in 2.0."
- "Remove lite.OpHint, lite.experimental, and lite.constant from 2.0 API."
- tf.contrib
- Added Neural Turing Implementation as described in https://arxiv.org/abs/1807.08518.
- Remove tf.contrib.timeseries dependency on TF distributions.
- tf.data
- Add num_parallel_reads and passing in a Dataset containing filenames into TextLineDataset and FixedLengthRecordDataset
- Going forward we operate in TF 2.0, this change is part of the effort to slowly converting XYZDataset to DatasetV2 type which is the official version going to be used in TF 2.0 and motivated by some compatibility issue found, _BigtableXYZDataset (of type DatasetV2) does not implement the _as_variant_tensor() of DatasetV1, when moving contrib.bigtable to tensorflow_io. Converting into DatasetV2 removes the overheads to maintain V1 while we are moving into TF 2.0.
- Add dataset ops to the graph (or create kernels in Eager execution) during the python Dataset object creation instead doing it during Iterator creation time.
- Add support for TensorArrays to tf.data Dataset.
- Switching tf.data functions to use
defun
, providing an escape hatch to continue using the legacyDefun
.
- Toolchains
- CUDNN_INSTALL_PATH, TENSORRT_INSTALL_PATH, NCCL_INSTALL_PATH, NCCL_HDR_PATH are deprecated. Use TF_CUDA_PATHS instead which supports a comma-separated list of base paths that are searched to find CUDA libraries and headers.
- TF code now resides in
tensorflow_core
andtensorflow
is just a virtual pip package. No code changes are needed for projects using TensorFlow, the change is transparent
- XLA
- XLA HLO graphs can be inspected with interactive_graphviz tool now.
- Estimator
- Use tf.compat.v1.estimator.inputs instead of tf.estimator.inputs
- Replace contrib references with tf.estimator.experimental.* for apis in early_stopping.py
This release contains contributions from many people at Google, as well as:
1e100, 4d55397500, a6802739, abenmao, Adam Weiss, Ag Ramesh, Alan Du, Albin Joy, Alex, Aman Patel, Amit, Amit Kumar Jaiswal, Amit Srivastava, Andreas Eberle, Andy Craze, Anthony Platanios, Armen Poghosov, armenpoghosov, arp95, Arpit Shah, Ashwin Ramaswami, Aurelien Geron, AuréLien Geron, aweers, awesomealex1, Ayush Agrawal, Ben Barsdell, Bharat Raghunathan, Bhavani Subramanian, blairhan, BléNesi Attila, Brandon Carter, candy.dc, Chao Liu, chenchc, chie8842, Christian Hansen, Christian Sigg, Clayne Robison, crafet, csukuangfj, ctiijima, Dan Jarvis, Dan Lazewatsky, Daniel Ingram, Daniel Salvadori, Dave Airlie, David Norman, Dayananda V, Dayananda-V, delock, Denis Khalikov, Deven Desai, Dheeraj Rajaram Reddy, dmitrievanthony, Donovan Ong, Drew Szurko, Duncan Riach, Dustin Neighly, Edward Forgacs, EFanZh, Fei Hu, Felix Lemke, Filip Matzner, fo40225, frreiss, Gautam, gehring, Geoffrey Irving, Grzegorz George Pawelczak, Grzegorz Pawelczak, Gyoung-Yoon Ryoo, HanGuo97, Hanton Yang, Hari Shankar, hehongliang, Heungsub Lee, Hoeseong Kim, I-Hong Jhuo, Ilango R, Innovimax, Irene Dea, Jacky Ko, Jakub Lipinski, Jason Zaman, jcf94, Jeffrey Poznanovic, Jens Elofsson, Jeroen BéDorf, Jia Qingtong, Jiankang, Joe Q, Joe Quadrino, Joeran Beel, Jonas Rauber, Jonathan, Jonathan Kyl, Joppe Geluykens, Joseph Friedman, jtressle, jwu, K Yasaswi Sri Chandra Gandhi, K. Hodges, Kaixi Hou, Karl Lessard, Karl Weinmeister, Karthik Muthuraman, Kashif Rasul, KDR, Keno Fischer, Kevin Mader, kjopek, Koan-Sin Tan, kouml, ktaebum, Lakshay Tokas, Laurent Le Brun, Letian Kang, Li, Guizi, Loo Rong Jie, Lucas Hendren, Lukas Geiger, Luke Han, luxupu, Ma, Guokai, Mahmoud Abuzaina, Mandar Deshpande, manhyuk, Marco Gaido, Marek Drozdowski, Mark Collier, Mark Ryan, mars20, Mateusz Chudyk, Matt Conley, MattConley, mbhuiyan, mdfaijul, Melissa Grueter, Michael KäUfl, MickaëL Schoentgen, Miguel Morin, Mihail Salnikov, Mike Arpaia, Mike Holcomb, monklof, Moses Marin, Mshr-H, nammbash, Natalia Gimelshein, Nayana-Ibm, neargye, Neeraj Pradhan, Nehal J Wani, Nick, Niels Ole Salscheider, Niranjan Hasabnis, nlewycky, Nuka-137, Nutti, olicht, P Sudeepam, Palmer Lao, Pan Daoxin, Pariksheet Pinjari, Pavel Samolysov, PENGWA, Pooya Davoodi, R S Nikhil Krishna, Rohit Gupta, Roman Soldatow, rthadur, Ruizhe, Ryan Jiang, Samantha Andow, Sami Kama, Sana-Damani, Saurabh Deoras, sdamani, seanshpark, Sebastien Iooss, Serv-Inc, Shahzad Lone, Shashank Gupta, Shashi, shashvat, shashvatshahi1998, Siju, Siju Samuel, Snease-Abq, Spencer Schaber, sremedios, srinivasan.narayanamoorthy, Steve Lang, Steve Nesae, Sumesh Udayakumaran, Supriya Rao, Taylor Jakobson, Taylor Thornton, Ted Chang, ThisIsPIRI, Thomas Deegan, Thomas Hagebols, tianyapiaozi, Tim Zaman, tomguluson92, Tongxuan Liu, TungJerry, v1incent, Vagif, vcarpani, Vikram Tiwari, Vishwak Srinivasan, Vitor-Alves, wangsiyu, wateryzephyr, WeberXie, WeijieSun, Wen-Heng (Jack) Chung, wenxizhu, Will Battel, William D. Irons, wyzhao, Xin, Yasuhiro Matsumoto, ymodak, Yong Tang, Younes Khoudli, Yuan Lin, Yves-Noel Weweler, Zantares, zjjott, 卜居, 王振华 (Wang Zhenhua), 黄鑫
- Updates
png_archive
dependency to 1.6.37 to not be affected by CVE-2019-7317, CVE-2018-13785, and CVE-2018-14048. - Updates
sqlite
depenency to 3.28.0 to not be affected by CVE-2018-20506, CVE-2018-20346, and CVE-2018-20505.
- Fixes a potential security vulnerability where carefully crafted GIF images can produce a null pointer dereference during decoding.
- TensorFlow Lite has moved from contrib to core. This means that Python modules are under
tf.lite
and source code is now undertensorflow/lite
rather thantensorflow/contrib/lite
. - TensorFlow GPU binaries are now built against CUDA 10 and TensorRT 5.0.
- Support for Python3.7 on all operating systems.
- Moved NCCL to core.
- Disallow conversion of python floating types to uint32/64 (matching behavior of other integer types) in
tf.constant
. - Make the
gain
argument of convolutional orthogonal initializers (convolutional_delta_orthogonal
,convolutional_orthogonal_1D
,convolutional_orthogonal_2D
,convolutional_orthogonal_3D
) have consistent behavior with thetf.initializers.orthogonal
initializer, i.e. scale the output l2-norm bygain
and NOT bysqrt(gain)
. (Note that these functions are currently intf.contrib
which is not guaranteed backward compatible).
- Documentation
- Update the doc with the details about the rounding mode used in quantize_and_dequantize_v2.
- Clarify that tensorflow::port::InitMain() should be called before using the TensorFlow library. Programs failing to do this are not portable to all platforms.
- Deprecations and Symbol renames.
- Removing deprecations for the following endpoints:
tf.acos
,tf.acosh
,tf.add
,tf.as_string
,tf.asin
,tf.asinh
,tf.atan
,tf.atan2
,tf.atanh
,tf.cos
,tf.cosh
,tf.equal
,tf.exp
,tf.floor
,tf.greater
,tf.greater_equal
,tf.less
,tf.less_equal
,tf.log
,tf.logp1
,tf.logical_and
,tf.logical_not
,tf.logical_or
,tf.maximum
,tf.minimum
,tf.not_equal
,tf.sin
,tf.sinh
,tf.tan
- Deprecate
tf.data.Dataset.shard
. - Deprecate
saved_model.loader.load
which is replaced bysaved_model.load
andsaved_model.main_op
, which will be replaced bysaved_model.main_op
in V2. - Deprecate tf.QUANTIZED_DTYPES. The official new symbol is tf.dtypes.QUANTIZED_DTYPES.
- Update sklearn imports for deprecated packages.
- Deprecate
Variable.count_up_to
andtf.count_up_to
in favor ofDataset.range
. - Export
confusion_matrix
op astf.math.confusion_matrix
instead oftf.train.confusion_matrix
. - Add
tf.dtypes.
endpoint for every constant in dtypes.py. Moving endpoints in versions.py to corresponding endpoints intf.sysconfig.
andtf.version.
. Moving all constants undertf.saved_model
submodules totf.saved_model
module. New endpoints are added in V1 and V2 but existing endpoint removals are only applied in V2. - Deprecates behavior where device assignment overrides collocation constraints inside a collocation context manager.
- Removing deprecations for the following endpoints:
- Keras & Python API
- Add to Keras functionality analogous to
tf.register_tensor_conversion_function
. - Subclassed Keras models can now be saved through
tf.contrib.saved_model.save_keras_model
. LinearOperator.matmul
now returns a newLinearOperator
.
- Add to Keras functionality analogous to
- New ops and improved op functionality
- Add a Nearest Neighbor Resize op.
- Add an
ignore_unknown
argument toparse_values
which suppresses ValueError for unknown hyperparameter types. Such * Addtf.linalg.matvec
convenience function. tf.einsum()
raisesValueError
for unsupported equations like"ii->"
.- Add DCT-I and IDCT-I in
tf.signal.dct
andtf.signal.idct
. - Add LU decomposition op.
- Add quantile loss to gradient boosted trees in estimator.
- Add
round_mode
toQuantizeAndDequantizeV2
op to select rounding algorithm. - Add
unicode_encode
,unicode_decode
,unicode_decode_with_offsets
,unicode_split
,unicode_split_with_offset
, andunicode_transcode
ops. Amongst other things, this Op adds the ability to encode, decode, and transcode a variety of input text encoding formats into the main Unicode encodings (UTF-8, UTF-16-BE, UTF-32-BE) - Add "unit" attribute to the substr op, which allows obtaining the substring of a string containing unicode characters.
- Broadcasting support for Ragged Tensors.
SpaceToDepth
supports uint8 data type.- Support multi-label quantile regression in estimator.
- We now use "div" as the default partition_strategy in
tf.nn.safe_embedding_lookup_sparse
,tf.nn.sampled_softmax
andtf.nn.nce_loss
. hyperparameter are ignored.
- Performance
- Improve performance of GPU cumsum/cumprod by up to 300x.
- Added support for weight decay in most TPU embedding optimizers, including AdamW and MomentumW.
- TensorFlow 2.0 Development
- Add a command line tool to convert to TF2.0, tf_upgrade_v2
- Merge
tf.spectral
intotf.signal
for TensorFlow 2.0. - Change the default recurrent activation function for LSTM from 'hard_sigmoid' to 'sigmoid' in 2.0. Historically recurrent activation is 'hard_sigmoid' since it is fast than 'sigmoid'. With new unified backend between CPU and GPU mode, since the CuDNN kernel is using sigmoid, we change the default for CPU mode to sigmoid as well. With that, the default LSTM will be compatible with both CPU and GPU kernel. This will enable user with GPU to use CuDNN kernel by default and get a 10x performance boost in training. Note that this is checkpoint breaking change. If user want to use their 1.x pre-trained checkpoint, please construct the layer with LSTM(recurrent_activation='hard_sigmoid') to fallback to 1.x behavior.
- TensorFlow Lite
- Move from
tensorflow/contrib/lite
totensorflow/lite
. - Add experimental Java API for injecting TensorFlow Lite delegates
- Add support for strings in TensorFlow Lite Java API.
- Move from
tf.contrib
:- Add Apache Ignite Filesystem plugin to support accessing Apache IGFS.
- Dropout now takes
rate
argument,keep_prob
is deprecated. - Estimator occurrences references
tf.contrib.estimator
were changed totf.estimator
: tf.contrib.estimator.BaselineEstimator
withtf.estimator.BaselineEstimator
tf.contrib.estimator.DNNLinearCombinedEstimator
withtf.estimator.DNNLinearCombinedEstimator
tf.contrib.estimator.DNNEstimator
withtf.estimator.DNNEstimator
tf.contrib.estimator.LinearEstimator
withtf.estimator.LinearEstimator
tf.contrib.estimator.InMemoryEvaluatorHook
and tf.estimator.experimental.InMemoryEvaluatorHook`.tf.contrib.estimator.make_stop_at_checkpoint_step_hook
withtf.estimator.experimental.make_stop_at_checkpoint_step_hook
.- Expose `tf.distribute.Strategy as the new name for tf.contrib.distribute.DistributionStrategy.
- Migrate linear optimizer from contrib to core.
- Move
tf.contrib.signal
totf.signal
(preserving aliases in tf.contrib.signal). - Users of
tf.contrib.estimator.export_all_saved_models
and related should switch totf.estimator.Estimator.experimental_export_all_saved_models
.
- tf.data:
- Add
tf.data.experimental.StatsOptions()
, to configure options to collect statistics fromtf.data.Dataset
pipeline usingStatsAggregator
. Add nested option,experimental_stats
(which takes atf.data.experimen tal.StatsOptions
object), totf.data.Options
. Deprecatestf.data.experimental.set_stats_agregator
. - Performance optimizations:
- Add
tf.data.experimental.OptimizationOptions()
, to configure options to enabletf.data
performance optimizations. Add nested option,experimental_optimization
(which takes atf.data.experimental.OptimizationOptions
object), totf.data.Options
. Remove performance optimization options fromtf.data.Options
, and add them undertf.data.experimental.OptimizationOptions
instead. - Enable
map_and_batch_fusion
andnoop_elimination
optimizations by default. They can be disabled by configuringtf.data.experimental.OptimizationOptions
to setmap_and_batch = False
ornoop_elimination = False
respectively. To disable all default optimizations, setapply_default_optimizations = False
. - Support parallel map in
map_and_filter_fusion
. - Disable static optimizations for input pipelines that use non-resource
tf.Variable
s. - Add NUMA-aware MapAndBatch dataset.
- Deprecate
tf.data.Dataset.make_one_shot_iterator()
in V1, removed it from V2, and added tf.compat.v1.data.make_one_shot_iterator()`. - Deprecate
tf.data.Dataset.make_initializable_iterator()
in V1, removed it from V2, and addedtf.compat.v1.data.make_initializable_iterator()
. - Enable nested dataset support in core
tf.data
transformations. - For
tf.data.Dataset
implementers: Addedtf.data.Dataset._element_structured property
to replaceDataset.output_{types,shapes,classes}
. - Make
num_parallel_calls
oftf.data.Dataset.interleave
andtf.data.Dataset.map
work in Eager mode.
- Add
- Toolchains
- Fixed OpenSSL compatibility by avoiding
EVP_MD_CTX_destroy
. - Added bounds checking to printing deprecation warnings.
- Upgraded CUDA dependency to 10.0
- To build with Android NDK r14b, add "#include <linux/compiler.h>" to android-ndk-r14b/platforms/android-14/arch-*/usr/include/linux/futex.h
- Removed
:android_tensorflow_lib_selective_registration*
targets, use:android_tensorflow_lib_lite*
targets instead.
- Fixed OpenSSL compatibility by avoiding
- XLA
- Move
RoundToEven
function to xla/client/lib/math.h. - A new environment variable
TF_XLA_DEBUG_OPTIONS_PASSTHROUGH
set to "1" or "true" allows the debug options passed within an XRTCompile op to be passed directly to the XLA compilation backend. If such variable is not set (service side), only a restricted set will be passed through. - Allow the XRTCompile op to return the ProgramShape resulted form the XLA compilation as a second return argument.
- XLA HLO graphs can now be rendered as SVG/HTML.
- Move
- Estimator
- Replace all occurences of
tf.contrib.estimator.BaselineEstimator
withtf.estimator.BaselineEstimator
- Replace all occurences of
tf.contrib.estimator.DNNLinearCombinedEstimator
withtf.estimator.DNNLinearCombinedEstimator
- Replace all occurrences of
tf.contrib.estimator.DNNEstimator
withtf.estimator.DNNEstimator
- Replace all occurrences of
tf.contrib.estimator.LinearEstimator
withtf.estimator.LinearEstimator
- Users of
tf.contrib.estimator.export_all_saved_models
and related should switch totf.estimator.Estimator.experimental_export_all_saved_models
. - Update
regression_head
to the new Head API for Canned Estimator V2. - Switch
multi_class_head
to Head API for Canned Estimator V2. - Replace all occurences of
tf.contrib.estimator.InMemoryEvaluatorHook
andtf.contrib.estimator.make_stop_at_checkpoint_step_hook
withtf.estimator.experimental.InMemoryEvaluatorHook
andtf.estimator.experimental.make_stop_at_checkpoint_step_hook
- Migrate linear optimizer from contrib to core.
- Replace all occurences of
This release contains contributions from many people at Google, as well as:
Abhinav Upadhyay, Ag Ramesh, akikaaa, Alexis Louis, Anders Huss, Andreas Madsen, Andrew Banchich, Andy Craze, Anton Dmitriev, Artem Malykh, Avijit-Nervana, Balint Cristian, Benjamin Tan Wei Hao, Bhavani Subramanian, Brendan Finan, Brian Nemsick, Bryan Cutler, By Shen, Cao Zongyan, Castiel, Chris Antaki, Christian Goll, Cibifang, Clayne Robison, Codrut Grosu, Cong Xu, Dalmo Cirne, Daniel Hunter, Dougal J. Sutherland, Edvard Fagerholm, EFanZh, Erik Smistad, Evgeniy Polyakov, Feiyang Chen, franklin5, Fred Reiss, Gautam, gehring, Geoffrey Irving, George Sterpu, Gitea, Grzegorz George Pawelczak, Guozhong Zhuang, himkt, Hoeseong Kim, Huan Li (李卓桓), HuiyangFei, hyunyoung, Isaac Burbank, jackonan, Jacky Ko, Jason Furmanek, Jason Zaman, Javier Luraschi, Jiang,Zhoulong, joaak, John Lin, Jonathan Wyatt Hoech, josephyearsley, Josh Gordon, Julian Niedermeier, Karl Lessard, Keno Fischer, lanhin, Leon Graser, leondgarse, Li, Guizi, Li, Yiqiang, lxl910915, Mahmoud Abuzaina, manhyuk, Marcela Morales Quispe, margaretmz, Matt Conley, Max Pumperla, mbhuiyan, mdfaijul, Meng, Peng, Michael, Michael Gielda, mrTsjolder, Muhammad Wildan, neargye, Nehal J Wani, NEWPLAN, Niranjan Hasabnis, Nutti, olicht, Pan Daoxin, Pedro Monreal, Peng Yu, pillarpond, Pooya Davoodi, qiezi, Rholais Lii, Richard Yu, Rin Arakaki, Roger Iyengar, sahilbadyal, Sami Kama, Sandip Giri, Scott Leishman, Serge Panev, Seunghoon Park, Shafi Dayatar, shengfuintel, Shimin Guo, Siju, silent567, Stefan Dyulgerov, steven, Tao Wei, Thor Johnsen, Tingbo Lu, tomguluson92, Tongxuan Liu, Trevor Morris, Ubuntu, Vadim Borisov, vanderliang, wangsiyu, Wen Yun, Wen-Heng (Jack) Chung, wenxizhu, William D. Irons, Xiaoming (Jason) Cui, Yan Facai (颜发才), Yanbo Liang, Yaniv Blumenfeld, Yash Gaurkar, Yicheng Fan, Yong Tang, Yongjoon Lee, Yuan (Terry) Tang, Yuxin Wu, zldrobit
- Keras models can now be directly exported to the SavedModel
format(
tf.contrib.saved_model.save_keras_model()
) and used with Tensorflow Serving. - Keras models now support evaluating with a
tf.data.Dataset
. - TensorFlow binaries are built with XLA support linked in by default.
- Ignite Dataset added to contrib/ignite that allows to work with Apache Ignite.
- tf.data:
- tf.data users can now represent, get, and set options of TensorFlow
input pipelines using
tf.data.Options()
,tf.data.Dataset.options()
, andtf.data.Dataset.with_options()
respectively. - New
tf.data.Dataset.reduce()
API allows users to reduce a finite dataset to a single element using a user-provided reduce function. - New
tf.data.Dataset.window()
API allows users to create finite windows of input dataset; when combined with thetf.data.Dataset.reduce()
API, this allows users to implement customized batching. - All C++ code moves to the
tensorflow::data
namespace. - Add support for
num_parallel_calls
totf.data.Dataset.interleave
.
- tf.data users can now represent, get, and set options of TensorFlow
input pipelines using
tf.contrib
:- Remove
tf.contrib.linalg
.tf.linalg
should be used instead. - Replace any calls to
tf.contrib.get_signature_def_by_key(metagraph_def, signature_def_key)
withmeta_graph_def.signature_def[signature_def_key]
. Catching a ValueError exception thrown bytf.contrib.get_signature_def_by_key
should be replaced by catching a KeyError exception.
- Remove
tf.contrib.data
- Deprecate, and replace by tf.data.experimental.
- Other:
- Instead of jemalloc, revert back to using system malloc since it simplifies build and has comparable performance.
- Remove integer types from
tf.nn.softplus
andtf.nn.softsign
OpDefs. This is a bugfix; these ops were never meant to support integers. - Allow subslicing Tensors with a single dimension.
- Add option to calculate string length in Unicode characters.
- Add functionality to SubSlice a tensor.
- Add searchsorted (ie lower/upper_bound) op.
- Add model explainability to Boosted Trees.
- Support negative positions for tf.substr.
- There was previously a bug in the bijector_impl where the _reduce_jacobian_det_over_event does not handle scalar ILDJ implementations properly.
- In tf eager execution, allow re-entering a GradientTape context.
- Add tf_api_version flag. If --define=tf_api_version=2 flag is passed in, then bazel will build TensorFlow API version 2.0. Note that TensorFlow 2.0 is under active development and has no guarantees at this point.
- Add additional compression options to TfRecordWriter.
- Performance improvements for regex full match operations.
- Replace tf.GraphKeys.VARIABLES with
tf.GraphKeys.GLOBAL_VARIABLES
. - Remove unused dynamic learning rate support.
This release contains contributions from many people at Google, as well as:
(David) Siu-Kei Muk, Ag Ramesh, Anton Dmitriev, Artem Sobolev, Avijit-Nervana, Bairen Yi, Bruno Goncalves, By Shen, candy.dc, Cheng Chen, Clayne Robison, coder3101, Dao Zhang, Elms, Fei Hu, feiquan, Geoffrey Irving, Guozhong Zhuang, hellcom, Hoeseong Kim, imsheridan, Jason Furmanek, Jason Zaman, Jenny Sahng, jiefangxuanyan, Johannes Bannhofer, Jonathan Homer, Koan-Sin Tan, kouml, Loo Rong Jie, Lukas Geiger, manipopopo, Ming Li, Moritz KröGer, Naurril, Niranjan Hasabnis, Pan Daoxin, Peng Yu, pengwa, rasmi, Roger Xin, Roland Fernandez, Sami Kama, Samuel Matzek, Sangjung Woo, Sergei Lebedev, Sergii Khomenko, shaohua, Shaohua Zhang, Shujian2015, Sunitha Kambhampati, tomguluson92, ViníCius Camargo, wangsiyu, weidankong, Wen-Heng (Jack) Chung, William D. Irons, Xin Jin, Yan Facai (颜发才), Yanbo Liang, Yash Katariya, Yong Tang, 在原佐为
- Nvidia GPU:
- Prebuilt binaries are now (as of TensorFlow 1.11) built against cuDNN 7.2 and TensorRT 4. See updated install guides: Installing TensorFlow on Ubuntu
- Google Cloud TPU:
- Experimental tf.data integration for Keras on Google Cloud TPUs.
- Experimental / preview support for eager execution on Google Cloud TPUs.
- DistributionStrategy:
- Add multi-GPU DistributionStrategy support in tf.keras. Users can now
use
fit
,evaluate
andpredict
to distribute their model on multiple GPUs. - Add multi-worker DistributionStrategy and standalone client support in Estimator. See README for more details.
- Add multi-GPU DistributionStrategy support in tf.keras. Users can now
use
- Add C, C++, and Python functions for querying kernels.
- Keras:
- The default values for tf.keras
RandomUniform
,RandomNormal
, andTruncatedNormal
initializers have been changed to match those in external Keras. - Breaking change:
model.get_config()
on a Sequential model now returns a config dictionary (consistent with other Model instances) instead of a list of configs for the underlying layers.
- The default values for tf.keras
- C++:
- Changed the signature of SessionFactory::NewSession so that it can return a meaningful error message on failure.
- tf.data:
- Remove
num_parallel_parser_calls
argument fromtf.contrib.data.make_csv_dataset()
. [tf.data] Removenum_parallel_parser_calls
argument fromtf.contrib.data.make_csv_dataset()
. tf.data.Dataset.list_files()
raises an exception at initialization time if the argument matches no files.- Renamed BigTable class to BigtableTable for clarity
- Document use of the Cloud Bigtable API
- Add
tf.contrib.data.reduce_dataset
which can be used to reduce a dataset to a single element. - Generalization of
tf.contrib.data.sliding_window_batch
.
- Remove
- INC:
- Runtime improvements to triangular solve.
tf.contrib
:- Add an
implementation
argument totf.keras.layers.LocallyConnected2D
andtf.keras.layers.LocallyConnected1D
. The new mode (implementation=2
) performs forward pass as a single dense matrix multiplication, allowing dramatic speedups in certain scenarios (but worse performance in others - see docstring). The option also allows to usepadding=same
. - Add documentation clarifying the differences between tf.fill and tf.constant.
- Add experimental IndexedDatasets.
- Add selective registration target using the lite proto runtime.
- Add simple Tensor and DataType classes to TensorFlow Lite Java
- Add support for bitcasting to/from uint32 and uint64.
- Added a subclass of Estimator that can be created from a SavedModel (SavedModelEstimator).
- Adds leaf index modes as an argument.
- Allow a different output shape from the input in tf.contrib.image.transform.
- Change the state_size order of the StackedRNNCell to be natural order. To keep the existing behavior, user can add reverse_state_order=True when constructing the StackedRNNCells.
- Deprecate self.test_session() in favor of self.session() or self.cached_session().
- Directly import tensor.proto.h (the transitive import will be removed from tensor.h soon).
- Estimator.train() now supports tf.contrib.summary.* summaries out of the box; each call to .train() will now create a separate tfevents file rather than re-using a shared one.
- Fix FTRL L2-shrinkage behavior: the gradient from the L2 shrinkage term should not end up in the accumulator.
- Fix toco compilation/execution on Windows.
- GoogleZoneProvider class added to detect which Google Cloud Engine zone tensorflow is running in.
- It is now safe to call any of the C API's TF_Delete* functions on nullptr.
- Log some errors on Android to logcat.
- Match FakeQuant numerics in TFLite to improve accuracy of TFLite quantized inference models.
- Optional bucket location check for the GCS Filesystem.
- Performance enhancements for StringSplitOp & StringSplitV2Op.
- Performance improvements for regex replace operations.
- TFRecordWriter now raises an error if .write() fails.
- TPU: More helpful error messages in TPUClusterResolvers.
- The legacy_init_op argument to SavedModelBuilder methods for adding MetaGraphs has been deprecated. Please use the equivalent main_op argument instead. As part of this, we now explicitly check for a single main_op or legacy_init_op at the time of SavedModel building, whereas the check on main_op was previously only done at load time.
- The protocol used for Estimator training is now configurable in RunConfig.
- Triangular solve performance improvements.
- Unify RNN cell interface between TF and Keras. Add new get_initial_state() to Keras and TF RNN cell, which will use to replace the existing zero_state() method.
- Update initialization of variables in Keras.
- Updates to "constrained_optimization" in tensorflow/contrib.
- boosted trees: adding pruning mode.
- tf.train.Checkpoint does not delete old checkpoints by default.
- tfdbg: Limit the total disk space occupied by dumped tensor data to 100
GBytes. Add environment variable
TFDBG_DISK_BYTES_LIMIT
to allow adjustment of this upper limit.
- Add an
This release contains contributions from many people at Google, as well as:
Aapeli, adoda, Ag Ramesh, Amogh Mannekote, Andrew Gibiansky, Andy Craze, Anirudh Koul, Aurelien Geron, Avijit, Avijit-Nervana, Ben, Benjamin H. Myara, bhack, Brett Koonce, Cao Zongyan, cbockman, cheerss, Chikanaga Tomoyuki, Clayne Robison, cosine0, Cui Wei, Dan J, David, David Norman, Dmitry Klimenkov, Eliel Hojman, Florian Courtial, fo40225, formath, Geoffrey Irving, gracehoney, Grzegorz Pawelczak, Guoliang Hua, Guozhong Zhuang, Herman Zvonimir DošIlović, HuiyangFei, Jacker, Jan HüNnemeyer, Jason Taylor, Jason Zaman, Jesse, Jiang,Zhoulong, Jiawei Zhang, Jie, Joe Yearsley, Johannes Schmitz, Jon Perl, Jon Triebenbach, Jonathan, Jonathan Hseu, Jongmin Park, Justin Shenk, [email protected], Kate Hodesdon, Kb Sriram, Keishi Hattori, Kenneth Blomqvist, Koan-Sin Tan, Li Liangbin, Li, Yiqiang, Loo Rong Jie, Madiyar, Mahmoud Abuzaina, Mark Ryan, Matt Dodge, mbhuiyan, melvinljy96, Miguel Mota, Nafis Sadat, Nathan Luehr, naurril, Nehal J Wani, Niall Moran, Niranjan Hasabnis, Nishidha Panpaliya, npow, olicht, Pei Zhang, Peng Wang (Simpeng), Peng Yu, Philipp Jund, Pradeep Banavara, Pratik Kalshetti, qwertWZ, Rakesh Chada, Randy West, Ray Kim, Rholais Lii, Robin Richtsfeld, Rodrigo Silveira, Ruizhi, Santosh Kumar, Seb Bro, Sergei Lebedev, sfujiwara, Shaba Abhiram, Shashi, SneakyFish5, Soila Kavulya, Stefan Dyulgerov, Steven Winston, Sunitha Kambhampati, Surry Shome, Taehoon Lee, Thor Johnsen, Tristan Rice, TShapinsky, tucan, tucan9389, Vicente Reyes, Vilmar-Hillow, Vitaly Lavrukhin, wangershi, weidan.kong, weidankong, Wen-Heng (Jack) Chung, William D. Irons, Wim Glenn, XFeiF, Yan Facai (颜发才), Yanbo Liang, Yong Tang, Yoshihiro Yamazaki, Yuan (Terry) Tang, Yuan, Man, zhaoyongke, ÁRon Ricardo Perez-Lopez, 张天启, 张晓飞
tf.keras
:- Fixing keras on Cloud TPUs. No new binaries will be built for Windows.
- The
tf.lite
runtime now supportscomplex64
. - Initial Google Cloud Bigtable integration for
tf.data
. - Improved local run behavior in
tf.estimator.train_and_evaluate
which does not reload checkpoints for evaluation. RunConfig
now sets device_filters to restrict how workers and PS can communicate. This can speed up training and ensure clean shutdowns in some situations. But if you have jobs that require communication between workers, you will have to set custom session_options in yourRunConfig
.- Moved Distributions and Bijectors from
tf.contrib.distributions
to Tensorflow Probability (TFP).tf.contrib.distributions
is now deprecated and will be removed by the end of 2018. - Adding new endpoints for existing tensorflow symbols. These endpoints are going to be the preferred endpoints going forward and may replace some of the existing endpoints in the future. See below for the complete list. New symbols have been added to the following modules:
tf.debugging
,tf.dtypes
,tf.image
,tf.io
,tf.linalg
,tf.manip
,tf.math
,tf.quantization
,tf.strings
- Prebuilt binaries are now (as of TensorFlow 1.10) built against NCCL 2.2 and no longer include NCCL in the binary install. TensorFlow usage with multiple GPUs and NCCL requires upgrade to NCCL 2.2. See updated install guides: TensorFlow GPU support and Build TensorFlow from source.
- Starting from TensorFlow 1.11, Windows builds will use Bazel. Therefore, we will drop official support for cmake.
tf.data
:tf.contrib.data.group_by_reducer()
is now available via the public API.tf.contrib.data.choose_from_datasets()
is now available via the public API.- Adding
drop_remainder
argument totf.data.Dataset.batch()
andtf.data.Dataset.padded_batch()
, deprecatingtf.contrib.data.batch_and_drop_remainder()
andtf.contrib.data.padded_batch_and_drop_remainder()
.
tf.estimator
:Estimator
s now use custom savers included inEstimatorSpec
scaffolds for saving SavedModels during export.EstimatorSpec
will now add a default prediction output for export if noexport_output
is provided, eliminating the need to explicitly include aPredictOutput
object in themodel_fn
for simple use-cases.- Support sparse_combiner in canned Linear Estimators.
- Added batch normalization to
DNNClassifier
,DNNRegressor
, andDNNEstimator
. - Adding ranking support for boosted trees.
- Adding center bias option for boosted trees.
- Add
synchronization
andaggregation
args to get_variable(). These args will be used for distributed variables. - Add
synchronization
andaggregation
args to the layeradd_weight()
API. These args will be used for distributed variables. tf.losses.*
do not add to the global collection when executing eagerly (to avoid leaking memory).- Support different summary and checkpoint directories in
tf.train.MonitoredTrainingSession()
. - Added IndRNN, IndyGRU, and IndyLSTM cells to
tf.contrib.rnn
. - Add safe static factory functions for SparseTensor and convert all CHECKs to DCHECKs. Using the constructor directly is unsafe and deprecated.
- Make the Bigtable client connection pool configurable & increase the default # of connections for performance.
- Added derivative of
tf.random_gamma
with respect to the alpha parameter. - Added derivative of
tf.igamma(a, x)
andtf.igammac(a, x)
with respect to a. - Modified Bessel functions of order zero and one.
- Add FillTriangular Bijector to create triangular matrices.
- Added support for Type III DCT, and
tf.spectral.idct(type=2|3)
. - Correctly handle CuDNN RNN weight loaded when nest in
TimeDistributed
. - Adding per-element weight support for
WALSComputePartialLhsAndRhsOp
. - ZerosLike and OnesLike ops treated as constants by Graph Transform Tool.
- Gamma distribution and the derived distributions (Beta, Dirichlet, Student's t, inverse Gamma) now fully reparameterized.
- Java: Experimental wrapper classes to make graph generation easier. Thanks @karllessard and @kbsriram
- Build & link in secure gRPC components (switch from the insecure grpc dependency to secure grpc dependency).
- Adding new endpoints for existing tensorflow symbols. These endpoints are going to be the preferred endpoints going forward and may replace some of the existing endpoints in the future. List of new endpoints:
- New endpoints in
tf.image
namespace:tf.image.extract_image_patches
- New endpoints in
tf.debugging
namespace:tf.debugging.check_numerics
,tf.debugging.is_finite
,tf.debugging.is_inf
,tf.debugging.is_nan
. - New endpoints in
tf.dtypes
namespace:tf.dtypes.as_string
. - New endpoints in
tf.io
namespace:tf.io.decode_base64
,tf.io.decode_compressed
,tf.io.decode_json_example
,tf.io.decode_raw
,tf.io.encode_base64
,tf.io.matching_files
,tf.io.parse_tensor
,tf.io.read_file,
tf.io.write_file`. - New endpoints in tf.linalg namespace:
tf.linalg.cross
,tf.linalg.tensor_diag
(corresponds totf.diag
),tf.linalg.tensor_diag_part
(corresponds totf.diag_part
). - New endpoints in tf.manip namespace:
tf.manip.batch_to_space_nd
,tf.manip.gather_nd
,tf.manip.reshape
,tf.manip.reverse
,tf.manip.scatter_nd
,tf.manip.space_to_batch_nd
,tf.manip.tile
- New endpoints in tf.math namespace:
tf.math.acos
,tf.math.acosh
,tf.math.add
,tf.math.asin
,tf.math.asinh
,tf.math.atan
,tf.math.atan2
,tf.math.atanh
,tf.math.betainc
,tf.math.ceil
,tf.math.cos
,tf.math.cosh
,tf.math.digamma
,tf.math.equal
,tf.math.erfc
,tf.math.exp
,tf.math.expm1
,tf.math.floor
,tf.math.greater
,tf.math.greater_equal
,tf.math.igamma
,tf.math.igammac
,tf.math.invert_permutation
,tf.math.less
,tf.math.less_equal
,tf.math.lgamma
,tf.math.log
,tf.math.log1p
,tf.math.logical_and
,tf.math.logical_not
,tf.math.logical_or
,tf.math.maximum
,tf.math.minimum
,tf.math.not_equal
,tf.math.polygamma
,tf.math.reciprocal
,tf.math.rint
,tf.math.rsqrt
,tf.math.segment_max
,tf.math.segment_mean
,tf.math.segment_min
,tf.math.segment_prod
,tf.math.segment_sum
,tf.math.sin
,tf.math.sinh
,tf.math.softplus
,tf.math.softsign
,tf.math.squared_difference
,tf.math.tan
,tf.math.unsorted_segment_max
,tf.math.unsorted_segment_min
,tf.math.unsorted_segment_prod
,tf.math.unsorted_segment_sum
,tf.math.zeta
. - New endpoints in
tf.quantization
namespace:tf.quantization.dequantize
,tf.quantization.fake_quant_with_min_max_args
,tf.quantization.fake_quant_with_min_max_args_gradient
,tf.quantization.fake_quant_with_min_max_vars
,tf.quantization.fake_quant_with_min_max_vars_gradient
,tf.quantization.fake_quant_with_min_max_vars_per_channel
,tf.quantization.fake_quant_with_min_max_vars_per_channel_gradient
. - New endpoints in tf.strings namespace:
tf.strings.join
(corresponds totf.string_join
),tf.strings.regex_replace
,tf.strings.to_number
(corresponds totf.string_to_number
),tf.strings.strip
(corresponds totf.string_strip
),tf.strings.substr
,tf.strings.to_hash_bucket
(corresponds totf.string_to_hash_bucket
),tf.strings.to_hash_bucket_fast
(corresponds totf.string_to_hash_bucket_fast
),tf.strings.to_hash_bucket_strong
(corresponds totf.string_to_hash_bucket_strong
).
- New endpoints in
This release contains contributions from many people at Google, as well as:
Ag Ramesh, Alex Wiltschko, Alexander Pantyukhin, Amogh Mannekote, An Jiaoyang, Andrei Nigmatulin, Andrew Ginns, BjøRn Moholt, Brett Koonce, Chengzhi Chen, Chinmay Das, Christian Ertler, Christoph Boeddeker, Clayne Robison, Courtial Florian, ctiijima, Dan Douthit, Dan J, Dan Ringwalt, EFanZh, Emanuele Ballarin, eqy, Evgeniy Zheltonozhskiy, Freedom" Koan-Sin Tan, FréDéRic Branchaud-Charron, G K, gracehoney, Guillaume Klein, Guozhong Zhuang, Hsien-Yang Li, hsm207, ImSheridan, Jayaram Bobba, Jiandong Ruan, Jie, Joel Shor, Jonas Rauber, Jongmin Baek, jsawruk, Karan Kaw, Karl Lessard, [email protected], Kb Sriram, KinmanLam, leiiwang, Li, Yiqiang, Loo Rong Jie, Mahmoud Abuzaina, Mahmoud Aslan, ManHyuk, Martin Patz, Martin Zeitler, mktozk, Mohammad Ashraf Bhuiyan, mrTsjolder, Naman Bhalla, Nick Felt, Nicolas Lopez, Niranjan Hasabnis, Nishidha Panpaliya, Nitish, nrstott, Nutti, Parag Jain, PeterLee, Philipp Jund, Rach L, Rafal Wojdyla, Roland Zimmermann, Sergei Lebedev, SneakyFish5, Soila Kavulya, Sriram Veturi, Steven Schmatz, Taehoon Lee, Tang, Wenyi, Taras Sereda, Ted Chang, Tim Zaman, Tristan Rice, tucan, vchigrin, Vikram Tiwari, Vincent, WeberXie, William D. Irons, Yan Facai (颜发才), Yong Tang, Yu Yi, Yuxin Wu, Zé ViníCius
- Updated docs for
tf.keras
: New Keras-based get started, and programmers guide page. - Update
tf.keras
to the Keras 2.1.6 API. - Added
tf.keras.layers.CuDNNGRU
andtf.keras.layers.CuDNNLSTM
layers. Try it. - Adding support of core feature columns and losses to gradient boosted trees estimators.
- The python interface
for the TFLite Optimizing Converter
has been expanded, and the command line interface (AKA:
toco
,tflite_convert
) is once again included in the standardpip
installation. - Improved data-loading and text processing with:
- Added experimental support for new pre-made Estimators:
- The distributions.Bijector API supports broadcasting for Bijectors with new API changes.
- If you're opening empty variable scopes; replace
variable_scope('', ...)
byvariable_scope(tf.get_variable_scope(), ...)
. - Headers used for building custom ops have been moved from site-packages/external into site-packages/tensorflow/include/external.
tfe.Network
is deprecated. Please inherit fromtf.keras.Model
.- Layered variable names have changed in the following conditions:
- Using
tf.keras.layers
with custom variable scopes. - Using
tf.layers
in a subclassedtf.keras.Model
class. See here for more details
- Using
tf.data
:Dataset.from_generator()
now accepts anargs
list, in order to create nested generators.Dataset.list_files()
now produces deterministic results whenshuffle=False
or aseed
is passed.tf.contrib.data.sample_from_datasets()
andtf.contrib.data.choose_from_datasets()
make it easier to sample or deterministically choose elements from multiple datasets.tf.contrib.data.make_csv_dataset()
now supports line breaks in quoted strings, and two infrequently used arguments removed.- (C++)
DatasetBase::DebugString()
is nowconst
. - (C++)
DatasetBase::MakeIterator()
has been renamed toDatasetBase::MakeIteratorInternal()
. - (C++)
IteratorBase::Initialize()
method was added to support raising errors during iterator construction.
- Eager Execution:
- Added the ability to pause recording operations for gradient computation
via
tf.GradientTape.stop_recording
. - Updated documentation, introductory notebooks.
- Added the ability to pause recording operations for gradient computation
via
tf.keras
:- Move Keras code out of _impl folder and remove API files.
tf.keras.Model.save_weights
now saves in TensorFlow format by default.- Enable dataset iterators to be passed to
tf.keras.Model
training/eval methods.
- TensorFlow Debugger (tfdbg) CLI: fix an issue in which the TensorBoard Debugger Plugin could not handle total source file size exceeding gRPC message size limit (4 MB).
tf.contrib
:tf.contrib.framework.zero_initializer
supports ResourceVariable.- Adding "constrained_optimization" to tensorflow/contrib.
- Other:
- Add GCS Configuration Ops.
- Changing signature of
MakeIterator
to enable propagating error status. - KL divergence for two Dirichlet distributions.
- More consistent GcsFileSystem behavior for certain reads past EOF.
- Update benchmark for tf.scan to match ranges across eager and graph modes.
- Fixed bug in
tf.reduce_prod gradient
for complex dtypes. - Allow the use of '.' in variables (e.g. "hparams.parse('a.b=1.0')"), which would previously raise an error. This will correspond to an attribute name with an embedded '.' symbol (e.g. 'a.b'), which can only be accessed indirectly (e.g. through getattr and setattr). To set this up the user will first need to explicitly add the variable to the hparam object (e.g. "hparams.add_hparam(name='a.b', value=0.0)").
- Benchmark for tf.scan in graph and eager modes.
- Added complex128 support to FFT, FFT2D, FFT3D, IFFT, IFFT2D, and IFFT3D.
- Making ids unique in
nn.embedding_lookup_sparse
. This helps to reduce RPC calls for looking up the embeddings when there are repeated ids in the batch. - Support indicator column in boosted trees.
- Prevent
tf.gradients()
from backpropagating through integer tensors. - LinearOperator[1D,2D,3D]Circulant added to
tensorflow.linalg
. - Conv3D, Conv3DBackpropInput, Conv3DBackpropFilter now supports arbitrary.
- Added
tf.train.Checkpoint
for reading/writing object-based checkpoints. - Added LinearOperatorKronecker, a dense-free implementation of the Kronecker Product.
- Allow LinearOperator to broadcast.
- SavedModelBuilder will now deduplicate asset names that point to files with the same basename and the same contents. Note that this may result in new asset files included in SavedModels in cases where assets with the same name but different contents were previously overwriting each other.
This release contains contributions from many people at Google, as well as:
Abdullah Alrasheed, Achal Shah, Ad-530, ADiegoCAlonso, Aditya Yogi, Ag Ramesh, akindyakov, Andy Kernahan, Anya Petrova, Aurelien Geron, Ben, Ben Barsdell, Bhavani-Subramanian, braincodercn, Brett Koonce, Brian Nemsick, Brian Zier, Bryan Heden, candy.dc, cclauss, Clayne Robison, ctiijima, Dalmo Cirne, David Norman, David T.H. Kao, DosLin, ekelsen, Elson Rodriguez, Erik Smistad, Felix Abecassis, Fergal Cotter, fo40225, foo0x29a, Freedom" Koan-Sin Tan, FréDéRic Branchaud-Charron, gdh1995, Geoffrey Irving, Giuseppe, gracehoney, Guido Zuidhof, Guillaume Klein, Guozhong Zhuang, Haggai, Harald Husum, imsheridan, Ivan Zhang, Jan Zikes, Jayaram Bobba, Jesse Benson, Jesse Gumz, Jiajia Li, Jie, jinghuangintel, Jingwen, jjsjann123, Joe Yearsley, Joel Hestness, Joel Shor, josephyearsley, Junpeng Lao, Karol M. Langner, Kb Sriram, krantideep95, Krish Ravindranath, Letian Feng, Loo Rong Jie, Lukas Geiger, Maciej, Mahmoud Abuzaina, ManHyuk, Mark Ryan, mbhuiyan, Michal Turek, Mostafa Alaa, Myungsung Kwak, Nand Dalal, Nehal J Wani, Neil Tenenholtz, ngc92, Nicholas Nadeau, P.Eng., Avs, Niranjan Hasabnis, P-Hidringer, Paul Van Eck, Peng Yu, Qing Zhao, Qingying Chen, Quanlong, Rajendra Arora, Rholais Lii, rmanyari, Robin Richtsfeld, Russell Klopfer, Sagi, Sam Sendelbach, Sandeep N Gupta, Sandip Giri, Sarah Edkins, Scott Tseng, Sdalbsoo, Sergii Khomenko, Seungwoo Choi (Biggie), Seyed Majid Azimi, Shaoning Zeng, shengfuintel, Siu Kei, Muk, Smit Shilu, soonson, Stefan Schweter, Sukhwan Kim, Sunitha Kambhampati, Taehoon Lee, tamimaddari82, Tang, Wenyi, Ted Chang, u2takey, Utkarsh Upadhyay, Vadim Markovtsev, voegtlel, Wai Hon Law, wangsiyu, Wenhao Hu, wenhao.hu, William D. Irons, Yan Facai (颜发才), Yanbo Liang, Yihong Wang, Yilei (Dolee) Yang, Yong Tang, Yuan (Terry) Tang
- Can now pass
tf.contrib.distribute.MirroredStrategy()
totf.estimator.RunConfig()
to run an Estimator model on multiple GPUs on one machine. - Add
tf.contrib.data.prefetch_to_device()
, which supports prefetching to GPU memory. - Added Gradient Boosted Trees as pre-made Estimators: BoostedTreesClassifier, BoostedTreesRegressor.
- Add 3rd generation pipeline config for Cloud TPUs which improves performance and usability.
tf.contrib.bayesflow
is moving out to it's own repo.- Added
tf.contrib.{proto,rpc}
to allow generic proto parsing and RPC communication1.
tf.data
:- Add
tf.contrib.data.prefetch_to_device
, which enables prefetching dataset elements to GPU memory. - Add
tf.contrib.data.AUTOTUNE
, which allows the tf.data runtime to automatically tune the prefetch buffer sizes based on your system and environment. - Add
tf.contrib.data.make_csv_dataset
for building datasets of CSV files.
- Add
- Eager Execution:
- With eager execution Datasets can now be used as standard python iterators (
for batch in dataset:
). BothDataset.__iter__()
andDataset.make_one_shot_iterator()
can now be used to create iterators when eager execution is enabled. - Automatic device placement has been enabled (i.e., use a GPU if available automatically, without requiring an explicit
with tf.device(“/gpu:0”)
) (Fixes #14133) tf.GradientTape
has moved out of contrib.
- With eager execution Datasets can now be used as standard python iterators (
tf.keras
:- Added the fashion mnist dataset.
- New data preprocessing functions:
image/random_brightness
,sequence/TimeseriesGenerator
, andtext/hashing_trick
.
- Accelerated Linear Algebra (XLA):
- Select and scatter in reference util and evaluator now use lexicographical order to break ties.
- TensorFlow Debugger (tfdbg) CLI:
- During tensor-filter operations, allow exclusion of nodes by regular expressions.
- Fix spurious background colors in some text terminals.
tf.contrib
:- Add meta-distribution BatchReshape which reshapes batch dimensions.
tf.contrib.layers.recompute_grad
works for explicit gradient checkpointing on TPU.- Add
tf.contrib.framework.argsort
. - Allow
DNNBoostedTreeCombinedEstimator
to work with core versions of feature columns and losses. - Add non-linear image warping ops:
tf.contrib.image.sparse_image_warp
,tf.contrib.image.dense_image_warp
, andtf.contrib.image.interpolate_spline
. - Fix bug in
tf.contrib.opt.MultitaskOptimizerWrapper
where types of tensors were mismatched.
- Other:
- Low-level graph construction now calls the TensorFlow C API. This change should be invisible to most users, but can be disabled by setting the environment variable
TF_C_API_GRAPH_CONSTRUCTION=0
in this release. Future releases will remove the ability to disable this change. Please file a bug if you find yourself using this escape hatch. - Add description of shapes and a pointer to tutorial notebook in
tf.distributions.Distribution
. - Update scatter operations:
- Add
tf.scatter_min
andtf.scatter_max
- Extend scatter operations to work with a scalar update parameter.
- Add
- Move cuDNN RNN ops to core for use in TensorFlow codebase only.
- Add
float64
support forConv2d
,Conv2dBackpropInput
, andConv2dBackpropFilter
. - Add
float64
support forAvgPool
/AvgPoolGrad
. - Make graph name scope thread local so that they work correctly in multi-threaded environments.
- Update nsync synchronization library to avoid slow primitives on Linux.
- Removed need to put nsync/public on C include path when building custom ops.
- Add
tf.image.psnr
,tf.image.ssim
,tf.image.ssim_multiscale
,tf.image.image_gradients
,tf.image.sobel_edges
. - Add links to https://js.tensorflow.org.
- Fix non-uniformity of orthogonal matrices.
- Fix bug where multi-image Estimator eval summaries were not displayed correctly.
- Low-level graph construction now calls the TensorFlow C API. This change should be invisible to most users, but can be disabled by setting the environment variable
1 The cancellation logic of the RPC op contains a concurrency error. A fix has been submitted to master and will be part of the next release.
This release contains contributions from many people at Google, as well as:
4d55397500, Aghasy, Alan Du, Alan Lee, Alan Yee, Alex Wiltschko, Animesh Karnewar, Ankit Gupta, Anton Matosov, Aris L, Ben Barsdell, Brent Yi, Brett Koonce, Carl Thomé, cbockman, Chikanaga Tomoyuki, Chris Tava, CéDric Deltheil, Dahan Gong, Dalmo Cirne, Daniel Erenrich, David Norman, DavidNorman, Edd Wilder-James, Fanjin Zeng, Felix Abecassis, fo40225, George Sterpu, Giovanni Terlingen, Gor Baghdasaryan, Guillaume Klein, Hanchen Li, Ilya Polenov, Jakub Kolodziejczyk, Jason Sadler, Jayaram Bobba, Jerry Liu, jinghuangintel, Jiongyan Zhang (张炯衍), Joel Shor, Jong Wook Kim, Julian Eisenschlos, Karl Lessard, Krish Ravindranath, Loo Rong Jie, Lukas Geiger, Luke Iwanski, Mahmoud Abuzaina, ManHyuk, Marvin Richter, Maximilian Mitchell, Mohammad Ashraf Bhuiyan, msofka, Mustafa Kasap, Nathan Burnham, Nathan Luehr, Naveen Marri, ngc92, nio1814, Oleg Zabluda, Ou Changkun, Panos Ipeirotis, Paul Van Eck, Peter Lee, Piotr Czapla, qjivy, Rholais Lii, Rodrigo Formigone, Russell Klopfer, ryantimjohn, Sang Han, SebastiáN RamíRez, shengfuintel, Siby Jose Plathottam, Silver Chan, Stanislaw Antol, Taehoon Lee, Tarang Chugh, Ted Chang, Thomas Bastiani, Xian Xu, Xiaoming (Jason) Cui, Yan Facai (颜发才), yaox12, Yashal Shakti Kanungo, Yong Tang, Yuan (Terry) Tang, Yuxin Wu, Ziyue(Louis) Lu
- Eager mode is moving out of contrib, try
tf.enable_eager_execution()
. - Graph rewrites emulating fixed-point quantization compatible with TensorFlow Lite, supported by new
tf.contrib.quantize
package. - Easily customize gradient computation with
tf.custom_gradient
. - TensorBoard Debugger Plugin, the graphical user interface (GUI) of TensorFlow Debugger (tfdbg), is now in alpha.
- Experimental support for reading a sqlite database as a
Dataset
with newtf.contrib.data.SqlDataset
. - Distributed Mutex / CriticalSection added to
tf.contrib.framework.CriticalSection
. - Better text processing with
tf.regex_replace
. - Easy, efficient sequence input with
tf.contrib.data.bucket_by_sequence_length
- Initial support for
tf.contrib.tensorrt
that enables native TensorRT in TensorFlow.
- Accelerated Linear Algebra (XLA):
- Add
MaxPoolGradGrad
support for XLA - CSE pass from Tensorflow is now disabled in XLA.
- Add
tf.data
:tf.data.Dataset
- Add support for building C++ Dataset op kernels as external libraries, using the
tf.load_op_library()
mechanism. Dataset.list_files()
now shuffles its output by default.Dataset.shuffle(..., seed=tf.constant(0, dtype=tf.int64))
now yields the same sequence of elements asDataset.shuffle(..., seed=0)
.
- Add support for building C++ Dataset op kernels as external libraries, using the
- Add
num_parallel_reads
argument totf.data.TFRecordDataset
.
tf.contrib
:tf.contrib.bayesflow.halton_sequence
now supports randomization.- Add support for scalars in
tf.contrib.all_reduce
. - Add
effective_sample_size
totf.contrib.bayesflow.mcmc_diagnostics
. - Add
potential_scale_reduction
totf.contrib.bayesflow.mcmc_diagnostics
. - Add
BatchNormalization
,Kumaraswamy
bijectors. - Deprecate
tf.contrib.learn
. Please check contrib/learn/README.md for instructions on how to convert existing code. tf.contrib.data
- Remove deprecated
tf.contrib.data.Dataset
,tf.contrib.data.Iterator
,tf.contrib.data.FixedLengthRecordDataset
,tf.contrib.data.TextLineDataset
, andtf.contrib.data.TFRecordDataset
classes. - Added
bucket_by_sequence_length
,sliding_window_batch
, andmake_batched_features_dataset
- Remove deprecated
- Remove unmaintained
tf.contrib.ndlstm
. You can find it externally at https://github.com/tmbarchive/tfndlstm. - Moved most of
tf.contrib.bayesflow
to its own repo:tfp
- Other:
- tf.py_func now reports the full stack trace if an exception occurs.
- Integrate
TPUClusterResolver
with GKE's integration for Cloud TPUs. - Add a library for statistical testing of samplers.
- Add Helpers to stream data from the GCE VM to a Cloud TPU.
- Integrate ClusterResolvers with TPUEstimator.
- Unify metropolis_hastings interface with HMC kernel.
- Move LIBXSMM convolutions to a separate --define flag so that they are disabled by default.
- Fix
MomentumOptimizer
lambda. - Reduce
tfp.layers
boilerplate via programmable docstrings. - Add
auc_with_confidence_intervals
, a method for computing the AUC and confidence interval with linearithmic time complexity. regression_head
now accepts customized link function, to satisfy the usage that user can define their own link function if thearray_ops.identity
does not meet the requirement.- Fix
initialized_value
andinitial_value
behaviors forResourceVariables
created fromVariableDef
protos. - Add TensorSpec to represent the specification of Tensors.
- Constant folding pass is now deterministic.
- Support
float16
dtype
intf.linalg.*
. - Add
tf.estimator.export.TensorServingInputReceiver
that allowstf.estimator.Estimator.export_savedmodel
to pass raw tensors to model functions.
- TensorFlow 1.7 may be the last time we support Cuda versions below 8.0. Starting with TensorFlow 1.8 release, 8.0 will be the minimum supported version.
- TensorFlow 1.7 may be the last time we support cuDNN versions below 6.0. Starting with TensorFlow 1.8 release, 6.0 will be the minimum supported version.
This release contains contributions from many people at Google, as well as:
4d55397500, Abe, Alistair Low, Andy Kernahan, Appledore, Ben, Ben Barsdell, Boris Pfahringer, Brad Wannow, Brett Koonce, Carl Thomé, cclauss, Chengzhi Chen, Chris Drake, Christopher Yeh, Clayne Robison, Codrut Grosu, Daniel Trebbien, Danny Goodman, David Goodwin, David Norman, Deron Eriksson, Donggeon Lim, Donny Viszneki, DosLin, DylanDmitri, Francisco Guerrero, Fred Reiss, gdh1995, Giuseppe, Glenn Weidner, gracehoney, Guozhong Zhuang, Haichen "Hc" Li, Harald Husum, harumitsu.nobuta, Henry Spivey, hsm207, Jekyll Song, Jerome, Jiongyan Zhang, jjsjann123, John Sungjin Park, Johnson145, JoshVarty, Julian Wolff, Jun Wang, June-One, Kamil Sindi, Kb Sriram, Kdavis-Mozilla, Kenji, lazypanda1, Liang-Chi Hsieh, Loo Rong Jie, Mahesh Bhosale, MandarJKulkarni, ManHyuk, Marcus Ong, Marshal Hayes, Martin Pool, matthieudelaro, mdfaijul, mholzel, Michael Zhou, Ming Li, Minmin Sun, Myungjoo Ham, MyungsungKwak, Naman Kamra, Peng Yu, Penghao Cen, Phil, Raghuraman-K, resec, Rohin Mohanadas, Sandeep N Gupta, Scott Tseng, seaotterman, Seo Sanghyeon, Sergei Lebedev, Ted Chang, terrytangyuan, Tim H, tkunic, Tod, vihanjain, Yan Facai (颜发才), Yin Li, Yong Tang, Yukun Chen, Yusuke Yamada
- Prebuilt binaries are now built against CUDA 9.0 and cuDNN 7.
- Prebuilt binaries will use AVX instructions. This may break TF on older CPUs.
- New Optimizer internal API for non-slot variables. Descendants of AdamOptimizer that access _beta[12]_power will need to be updated.
tf.estimator.{FinalExporter,LatestExporter}
now export stripped SavedModels. This improves forward compatibility of the SavedModel.- FFT support added to XLA CPU/GPU.
- Documentation updates:
- Added a second version of Getting Started, which is aimed at ML newcomers.
- Clarified documentation on
resize_images.align_corners
parameter. - Additional documentation for TPUs.
- Google Cloud Storage (GCS):
- Add client-side throttle.
- Add a
FlushCaches()
method to the FileSystem interface, with an implementation for GcsFileSystem.
- Other:
- Add
tf.contrib.distributions.Kumaraswamy
. RetryingFileSystem::FlushCaches()
calls the base FileSystem'sFlushCaches()
.- Add
auto_correlation
to distributions. - Add
tf.contrib.distributions.Autoregressive
. - Add SeparableConv1D layer.
- Add convolutional Flipout layers.
- When both inputs of
tf.matmul
are bfloat16, it returns bfloat16, instead of float32. - Added
tf.contrib.image.connected_components
. - Add
tf.contrib.framework.CriticalSection
that allows atomic variable access. - Output variance over trees predictions for classifications tasks.
- For
pt
andeval
commands, allow writing tensor values to filesystem as numpy files. - gRPC: Propagate truncated errors (instead of returning gRPC internal error).
- Augment
parallel_interleave
to support 2 kinds of prefetching. - Improved XLA support for C64-related ops log, pow, atan2, tanh.
- Add probabilistic convolutional layers.
- Add
- Introducing
prepare_variance
boolean with default setting to False for backward compatibility. - Move
layers_dense_variational_impl.py
tolayers_dense_variational.py
.
-
Using XLA:GPU with CUDA 9 and CUDA 9.1 results in garbage results and/or
CUDA_ILLEGAL_ADDRESS
failures.Google discovered in mid-December 2017 that the PTX-to-SASS compiler in CUDA 9 and CUDA 9.1 sometimes does not properly compute the carry bit when decomposing 64-bit address calculations with large offsets (e.g.
load [x + large_constant]
) into 32-bit arithmetic in SASS.As a result, these versions of
ptxas
miscompile most XLA programs which use more than 4GB of temp memory. This results in garbage results and/orCUDA_ERROR_ILLEGAL_ADDRESS
failures.A fix in CUDA 9.1.121 is expected in late February 2018. We do not expect a fix for CUDA 9.0.x. Until the fix is available, the only workaround is to downgrade to CUDA 8.0.x or disable XLA:GPU.
TensorFlow will print a warning if you use XLA:GPU with a known-bad version of CUDA; see e00ba24c4038e7644da417ddc639169b6ea59122.
This release contains contributions from many people at Google, as well as:
4d55397500, Ag Ramesh, Aiden Scandella, Akimasa Kimura, Alex Rothberg, Allen Goodman, amilioto, Andrei Costinescu, Andrei Nigmatulin, Anjum Sayed, Anthony Platanios, Anush Elangovan, Armando Fandango, Ashish Kumar Ram, Ashwini Shukla, Ben, Bhavani Subramanian, Brett Koonce, Carl Thomé, cclauss, Cesc, Changming Sun, Christoph Boeddeker, Clayne Robison, Clemens Schulz, Clint (Woonhyuk Baek), codrut3, Cole Gerdemann, Colin Raffel, Daniel Trebbien, Daniel Ylitalo, Daniel Zhang, Daniyar, Darjan Salaj, Dave Maclachlan, David Norman, Dong--Jian, dongsamb, dssgsra, Edward H, eladweiss, elilienstein, Eric Lilienstein, error.d, Eunji Jeong, fanlu, Florian Courtial, fo40225, Fred, Gregg Helt, Guozhong Zhuang, Hanchen Li, hsm207, hyunyoung2, ImSheridan, Ishant Mrinal Haloi, Jacky Ko, Jay Young, Jean Flaherty, Jerome, JerrikEph, Jesse Kinkead, jfaath, Jian Lin, jinghuangintel, Jiongyan Zhang, Joel Hestness, Joel Shor, Johnny Chan, Julian Niedermeier, Julian Wolff, JxKing, K-W-W, Karl Lessard, Kasper Marstal, Keiji Ariyama, Koan-Sin Tan, Loki Der Quaeler, Loo Rong Jie, Luke Schaefer, Lynn Jackson, ManHyuk, Matt Basta, Matt Smith, Matthew Schulkind, Michael, michaelkhan3, Miguel Piedrafita, Mikalai Drabovich, Mike Knapp, mjwen, mktozk, Mohamed Aly, Mohammad Ashraf Bhuiyan, Myungjoo Ham, Naman Bhalla, Namrata-Ibm, Nathan Luehr, nathansilberman, Netzeband, Niranjan Hasabnis, Omar Aflak, Ozge Yalcinkaya, Parth P Panchal, patrickzzy, Patryk Chrabaszcz, Paul Van Eck, Paweł Kapica, Peng Yu, Philip Yang, Pierre Blondeau, Po-Hsien Chu, powderluv, Puyu Wang, Rajendra Arora, Rasmus, Renat Idrisov, resec, Robin Richtsfeld, Ronald Eddy Jr, Sahil Singh, Sam Matzek, Sami Kama, sandipmgiri, Santiago Castro, Sayed Hadi Hashemi, Scott Tseng, Sergii Khomenko, Shahid, Shengpeng Liu, Shreyash Sharma, Shrinidhi Kl, Simone Cirillo, simsicon, Stanislav Levental, starsblinking, Stephen Lumenta, Steven Hickson, Su Tang, Taehoon Lee, Takuya Wakisaka, Ted Chang, Ted Ying, Tijmen Verhulsdonck, Timofey Kondrashov, vade, vaibhav, Valentin Khrulkov, vchigrin, Victor Costan, Viraj Navkal, Vivek Rane, wagonhelm, Yan Facai (颜发才), Yanbo Liang, Yaroslav Bulatov, yegord, Yong Tang, Yoni Tsafir, yordun, Yuan (Terry) Tang, Yuxin Wu, zhengdi, Zhengsheng Wei, 田传武
- Prebuilt binaries are now built against CUDA 9.0 and cuDNN 7.
- Starting from 1.6 release, our prebuilt binaries will use AVX instructions. This may break TF on older CPUs.
- Eager execution preview version is now available.
- TensorFlow Lite dev preview is now available.
- CUDA 9.0 and cuDNN 7 support.
- Accelerated Linear Algebra (XLA):
- Add
complex64
support to XLA compiler. bfloat
support is now added to XLA infrastructure.- Make
ClusterSpec
propagation work with XLA devices. - Use a deterministic executor to generate XLA graph.
- Add
tf.contrib
:tf.contrib.distributions
:- Add
tf.contrib.distributions.Autoregressive
. - Make
tf.contrib.distributions
QuadratureCompound classes support batch - Infer
tf.contrib.distributions.RelaxedOneHotCategorical
dtype
from arguments. - Make
tf.contrib.distributions
quadrature family parameterized byquadrature_grid_and_prob
vsquadrature_degree
. auto_correlation
added totf.contrib.distributions
- Add
- Add
tf.contrib.bayesflow.layers
, a collection of probabilistic (neural) layers. - Add
tf.contrib.bayesflow.halton_sequence
. - Add
tf.contrib.data.make_saveable_from_iterator.
- Add
tf.contrib.data.shuffle_and_repeat
. - Add new custom transformation:
tf.contrib.data.scan()
. tf.contrib.distributions.bijectors
:- Add
tf.contrib.distributions.bijectors.MaskedAutoregressiveFlow
. - Add
tf.contrib.distributions.bijectors.Permute
. - Add
tf.contrib.distributions.bijectors.Gumbel
. - Add
tf.contrib.distributions.bijectors.Reshape
. - Support shape inference (i.e., shapes containing -1) in the Reshape bijector.
- Add
- Add
streaming_precision_recall_at_equal_thresholds,
a method for computing streaming precision and recall withO(num_thresholds + size of predictions)
time and space complexity. - Change
RunConfig
default behavior to not set a random seed, making random behavior independently random on distributed workers. We expect this to generally improve training performance. Models that do rely on determinism should set a random seed explicitly. - Replaced the implementation of
tf.flags
withabsl.flags
. - Add support for
CUBLAS_TENSOR_OP_MATH
in fp16 GEMM - Add support for CUDA on NVIDIA Tegra devices
- Documentation updates:
- Clarified that you can only install TensorFlow on 64-bit machines.
- Added a short doc explaining how
Estimator
s save checkpoints. - Add documentation for ops supported by the
tf2xla
bridge. - Fix minor typos in the doc of
SpaceToDepth
andDepthToSpace
. - Updated documentation comments in
mfcc_mel_filterbank.h
andmfcc.h
to clarify that the input domain is squared magnitude spectra and the weighting is done on linear magnitude spectra (sqrt of inputs). - Change
tf.contrib.distributions
docstring examples to usetfd
alias rather thands
,bs
. - Fix docstring typos in
tf.distributions.bijectors.Bijector
. tf.assert_equal
no longer raisesValueError.
It now raisesInvalidArgumentError,
as documented.- Update Getting Started docs and API intro.
- Google Cloud Storage (GCS):
- Add userspace DNS caching for the GCS client.
- Customize request timeouts for the GCS filesystem.
- Improve GCS filesystem caching.
- Bug Fixes:
- Fix bug where partitioned integer variables got their wrong shapes. Before
- Fix correctness bug in CPU and GPU implementations of Adadelta.
- Fix a bug in
import_meta_graph
's handling of partitioned variables when importing into a scope. WARNING: This may break loading checkpoints of graphs with partitioned variables saved after usingimport_meta_graph
with a non-emptyimport_scope
argument. - Fix bug in offline debugger which prevented viewing events.
- Added the
WorkerService.DeleteWorkerSession
method to the gRPC interface, to fix a memory leak. Ensure that your master and worker servers are running the same version of TensorFlow to avoid compatibility issues. - Fix bug in peephole implementation of BlockLSTM cell.
- Fix bug by casting dtype of
log_det_jacobian
to matchlog_prob
inTransformedDistribution
. - Fix a bug in
import_meta_graph
's handling of partitioned variables when - Ensure
tf.distributions.Multinomial
doesn't underflow inlog_prob
. Before this change, all partitions of an integer variable were initialized with the shape of the unpartitioned variable; after this change they are initialized correctly.
- Other:
- Add necessary shape util support for bfloat16.
- Add a way to run ops using a step function to MonitoredSession.
- Add
DenseFlipout
probabilistic layer. - A new flag
ignore_live_threads
is available on train. If set toTrue
, it will ignore threads that remain running when tearing down infrastructure after successfully completing training, instead of throwing a RuntimeError. - Restandardize
DenseVariational
as simpler template for other probabilistic layers. tf.data
now supportstf.SparseTensor
components in dataset elements.- It is now possible to iterate over
Tensor
s. - Allow
SparseSegmentReduction
ops to have missing segment IDs. - Modify custom export strategy to account for multidimensional sparse float splits.
Conv2D
,Conv2DBackpropInput
,Conv2DBackpropFilter
now supports arbitrary dilations with GPU and cuDNNv6 support.Estimator
now supportsDataset
:input_fn
can return aDataset
instead ofTensor
s.- Add
RevBlock
, a memory-efficient implementation of reversible residual layers. - Reduce BFCAllocator internal fragmentation.
- Add
cross_entropy
andkl_divergence
totf.distributions.Distribution
. - Add
tf.nn.softmax_cross_entropy_with_logits_v2
which enables backprop w.r.t. the labels. - GPU back-end now uses
ptxas
to compile generated PTX. BufferAssignment
's protocol buffer dump is now deterministic.- Change embedding op to use parallel version of
DynamicStitch
. - Add support for sparse multidimensional feature columns.
- Speed up the case for sparse float columns that have only 1 value.
- Allow sparse float splits to support multivalent feature columns.
- Add
quantile
totf.distributions.TransformedDistribution
. - Add
NCHW_VECT_C
support fortf.depth_to_space
on GPU. - Add
NCHW_VECT_C
support fortf.space_to_depth
on GPU.
- Rename
SqueezeDims
attribute toAxis
in C++ API for Squeeze op. Stream::BlockHostUntilDone
now returns Status rather than bool.- Minor refactor: move stats files from
stochastic
tocommon
and removestochastic
.
-
Using XLA:GPU with CUDA 9 and CUDA 9.1 results in garbage results and/or
CUDA_ILLEGAL_ADDRESS
failures.Google discovered in mid-December 2017 that the PTX-to-SASS compiler in CUDA 9 and CUDA 9.1 sometimes does not properly compute the carry bit when decomposing 64-bit address calculations with large offsets (e.g.
load [x + large_constant]
) into 32-bit arithmetic in SASS.As a result, these versions of
ptxas
miscompile most XLA programs which use more than 4GB of temp memory. This results in garbage results and/orCUDA_ERROR_ILLEGAL_ADDRESS
failures.A fix in CUDA 9.1.121 is expected in late February 2018. We do not expect a fix for CUDA 9.0.x. Until the fix is available, the only workaround is to downgrade to CUDA 8.0.x or disable XLA:GPU.
TensorFlow will print a warning if you use XLA:GPU with a known-bad version of CUDA; see e00ba24c4038e7644da417ddc639169b6ea59122.
This release contains contributions from many people at Google, as well as:
Adam Zahran, Ag Ramesh, Alan Lee, Alan Yee, Alex Sergeev, Alexander, Amir H. Jadidinejad, Amy, Anastasios Doumoulakis, Andrei Costinescu, Andrei Nigmatulin, Anthony Platanios, Anush Elangovan, arixlin, Armen Donigian, ArtëM Sobolev, Atlas7, Ben Barsdell, Bill Prin, Bo Wang, Brett Koonce, Cameron Thomas, Carl Thomé, Cem Eteke, cglewis, Changming Sun, Charles Shenton, Chi-Hung, Chris Donahue, Chris Filo Gorgolewski, Chris Hoyean Song, Chris Tava, Christian Grail, Christoph Boeddeker, cinqS, Clayne Robison, codrut3, concerttttt, CQY, Dan Becker, Dan Jarvis, Daniel Zhang, David Norman, dmaclach, Dmitry Trifonov, Donggeon Lim, dongpilYu, Dr. Kashif Rasul, Edd Wilder-James, Eric Lv, fcharras, Felix Abecassis, FirefoxMetzger, formath, FredZhang, Gaojin Cao, Gary Deer, Guenther Schmuelling, Hanchen Li, Hanmin Qin, hannesa2, hyunyoung2, Ilya Edrenkin, Jackson Kontny, Jan, Javier Luraschi, Jay Young, Jayaram Bobba, Jeff, Jeff Carpenter, Jeremy Sharpe, Jeroen BéDorf, Jimmy Jia, Jinze Bai, Jiongyan Zhang, Joe Castagneri, Johan Ju, Josh Varty, Julian Niedermeier, JxKing, Karl Lessard, Kb Sriram, Keven Wang, Koan-Sin Tan, Kyle Mills, lanhin, LevineHuang, Loki Der Quaeler, Loo Rong Jie, Luke Iwanski, LáSzló Csomor, Mahdi Abavisani, Mahmoud Abuzaina, ManHyuk, Marek ŠUppa, MathSquared, Mats Linander, Matt Wytock, Matthew Daley, Maximilian Bachl, mdymczyk, melvyniandrag, Michael Case, Mike Traynor, miqlas, Namrata-Ibm, Nathan Luehr, Nathan Van Doorn, Noa Ezra, Nolan Liu, Oleg Zabluda, opensourcemattress, Ouwen Huang, Paul Van Eck, peisong, Peng Yu, PinkySan, pks, powderluv, Qiao Hai-Jun, Qiao Longfei, Rajendra Arora, Ralph Tang, resec, Robin Richtsfeld, Rohan Varma, Ryohei Kuroki, SaintNazaire, Samuel He, Sandeep Dcunha, sandipmgiri, Sang Han, scott, Scott Mudge, Se-Won Kim, Simon Perkins, Simone Cirillo, Steffen Schmitz, Suvojit Manna, Sylvus, Taehoon Lee, Ted Chang, Thomas Deegan, Till Hoffmann, Tim, Toni Kunic, Toon Verstraelen, Tristan Rice, Urs KöSter, Utkarsh Upadhyay, Vish (Ishaya) Abrams, Winnie Tsang, Yan Chen, Yan Facai (颜发才), Yi Yang, Yong Tang, Youssef Hesham, Yuan (Terry) Tang, Zhengsheng Wei, zxcqwe4906, 张志豪, 田传武
We are also grateful to all who filed issues or helped resolve them, asked and answered questions, and were part of inspiring discussions.
LinearClassifier
fix.
tf.keras
is now part of the core TensorFlow API.tf.data
is now part of the core TensorFlow API.- The API is now subject to backwards compatibility guarantees.
- For a guide to migrating from the
tf.contrib.data
API, see the README. - Major new features include
Dataset.from_generator()
(for building an input pipeline from a Python generator), and theDataset.apply()
method for applying custom transformation functions. - Several custom transformation functions have been added, including
tf.contrib.data.batch_and_drop_remainder()
andtf.contrib.data.sloppy_interleave()
.
- Add
train_and_evaluate
for simple distributedEstimator
training. - Add
tf.spectral.dct
for computing the DCT-II. - Add Mel-Frequency Cepstral Coefficient support to
tf.contrib.signal
(with GPU and gradient support). - Add a self-check on
import tensorflow
for Windows DLL issues. - Add NCHW support to
tf.depth_to_space
on GPU. - TensorFlow Debugger (tfdbg):
- Add
eval
command to allow evaluation of arbitrary Python/numpy expressions in tfdbg command-line interface. See Debugging TensorFlow Programs for more details. - Usability improvement: The frequently used tensor filter
has_inf_or_nan
is now added toSession
wrappers and hooks by default. So there is no need for clients to call.add_tensor_filter(tf_debug.has_inf_or_nan)
anymore.
- Add
- SinhArcsinh (scalar) distribution added to
contrib.distributions
. - Make
GANEstimator
opensource. Estimator.export_savedmodel()
now includes all valid serving signatures that can be constructed from the Serving Input Receiver and all available ExportOutputs. For instance, a classifier may provide regression- and prediction-flavored outputs, in addition to the classification-flavored one. Building signatures from these allows TF Serving to honor requests using the different APIs (Classify, Regress, and Predict). Furthermore,serving_input_receiver_fn()
may now specify alternative subsets of nodes that may act as inputs. This allows, for instance, producing a prediction signature for a classifier that accepts rawTensors
instead of a serializedtf.Example
.- Add
tf.contrib.bayesflow.hmc
. - Add
tf.contrib.distributions.MixtureSameFamily
. - Make
Dataset.shuffle()
always reshuffles after each iteration by default. - Add
tf.contrib.bayesflow.metropolis_hastings
. - Add
log_rate
parameter totf.contrib.distributions.Poisson
. - Extend
tf.contrib.distributions.bijector
API to handle some non-injective transforms. - Java:
- Generics (e.g.,
Tensor<Integer>
) for improved type-safety (courtesy @andrewcmyers). - Support for multi-dimensional string tensors.
- Support loading of custom operations (e.g. many in
tf.contrib
) on Linux and OS X
- Generics (e.g.,
- All our prebuilt binaries have been built with CUDA 8 and cuDNN 6. We anticipate releasing TensorFlow 1.5 with CUDA 9 and cuDNN 7.
tf.nn.rnn_cell.DropoutWrapper
is now more careful about dropping out LSTM states. Specifically, it no longer ever drops thec
(memory) state of anLSTMStateTuple
. The new behavior leads to proper dropout behavior for LSTMs and stacked LSTMs. This bug fix follows recommendations from published literature, but is a behavioral change. State dropout behavior may be customized via the newdropout_state_filter_visitor
argument.- Removed
tf.contrib.training.python_input
. The same behavior, in a more flexible and reproducible package, is available via the newtf.contrib.data.Dataset.from_generator
method! - Fix
tf.contrib.distributions.Affine
incorrectly computing log-det-jacobian. - Fix
tf.random_gamma
incorrectly handling non-batch, scalar draws. - Resolved a race condition in TensorForest TreePredictionsV4Op.
- Google Cloud Storage file system, Amazon S3 file system, and Hadoop file system support are now default build options.
- Custom op libraries must link against libtensorflow_framework.so
(installed at
tf.sysconfig.get_lib()
). - Change
RunConfig
default behavior to not set a random seed, making random behavior independently random on distributed workers. We expect this to generally improve training performance. Models that do rely on determinism should set a random seed explicitly.
- The signature of the
tf.contrib.data.rejection_resample()
function has been changed. It now returns a function that can be used as an argument toDataset.apply()
. - Remove
tf.contrib.data.Iterator.from_dataset()
method. UseDataset.make_initializable_iterator()
instead. - Remove seldom used and unnecessary
tf.contrib.data.Iterator.dispose_op()
. - Reorder some TF-GAN loss functions in a non-backwards compatible way.
- In Python 3,
Dataset.from_generator()
does not support Unicode strings. You must convert any strings to bytes objects before yielding them from the generator.
This release contains contributions from many people at Google, as well as:
4d55397500, Abdullah Alrasheed, abenmao, Adam Salvail, Aditya Dhulipala, Ag Ramesh, Akimasa Kimura, Alan Du, Alan Yee, Alexander, Amit Kushwaha, Amy, Andrei Costinescu, Andrei Nigmatulin, Andrew Erlichson, Andrew Myers, Andrew Stepanov, Androbin, AngryPowman, Anish Shah, Anton Daitche, Artsiom Chapialiou, asdf2014, Aseem Raj Baranwal, Ash Hall, Bart Kiers, Batchu Venkat Vishal, ben, Ben Barsdell, Bill Piel, Carl Thomé, Catalin Voss, Changming Sun, Chengzhi Chen, Chi Zeng, Chris Antaki, Chris Donahue, Chris Oelmueller, Chris Tava, Clayne Robison, Codrut, Courtial Florian, Dalmo Cirne, Dan J, Darren Garvey, David Kristoffersson, David Norman, David RöThlisberger, DavidNorman, Dhruv, DimanNe, Dorokhov, Duncan Mac-Vicar P, EdwardDixon, EMCP, error.d, FAIJUL, Fan Xia, Francois Xavier, Fred Reiss, Freedom" Koan-Sin Tan, Fritz Obermeyer, Gao, Xiang, Guenther Schmuelling, Guo Yejun (郭叶军), Hans Gaiser, HectorSVC, Hyungsuk Yoon, James Pruegsanusak, Jay Young, Jean Wanka, Jeff Carpenter, Jeremy Rutman, Jeroen BéDorf, Jett Jones, Jimmy Jia, jinghuangintel, jinze1994, JKurland, Joel Hestness, joetoth, John B Nelson, John Impallomeni, John Lawson, Jonas, Jonathan Dekhtiar, joshkyh, Jun Luan, Jun Mei, Kai Sasaki, Karl Lessard, [email protected], Kb Sriram, Kenichi Ueno, Kevin Slagle, Kongsea, Lakshay Garg, lhlmgr, Lin Min, liu.guangcong, Loki Der Quaeler, Louie Helm, lucasmoura, Luke Iwanski, Lyndon White, Mahmoud Abuzaina, Marcel Puyat, Mark Aaron Shirley, Michele Colombo, MtDersvan, Namrata-Ibm, Nathan Luehr, Naurril, Nayana Thorat, Nicolas Lopez, Niranjan Hasabnis, Nolan Liu, Nouce, Oliver Hennigh, osdamv, Patrik Erdes, Patryk Chrabaszcz, Pavel Christof, Penghao Cen, postBG, Qingqing Cao, Qingying Chen, qjivy, Raphael, Rasmi, raymondxyang, Renze Yu, resec, Roffel, Ruben Vereecken, Ryohei Kuroki, sandipmgiri, Santiago Castro, Scott Kirkland, Sean Vig, Sebastian Raschka, Sebastian Weiss, Sergey Kolesnikov, Sergii Khomenko, Shahid, Shivam Kotwalia, Stuart Berg, Sumit Gouthaman, superzerg, Sven Mayer, tetris, Ti Zhou, Tiago Freitas Pereira, Tian Jin, Tomoaki Oiki, Vaibhav Sood, vfdev, Vivek Rane, Vladimir Moskva, wangqr, Weber Xie, Will Frey, Yan Facai (颜发才), yanivbl6, Yaroslav Bulatov, Yixing Lao, Yong Tang, youkaichao, Yuan (Terry) Tang, Yue Zhang, Yuxin Wu, Ziming Dong, ZxYuan, 黄璞
We are also grateful to all who filed issues or helped resolve them, asked and answered questions, and were part of inspiring discussions.
See also TensorBoard 0.1.4 release notes.
- Added canned estimators to Tensorflow library. List of added estimators:
DNNClassifier
DNNRegressor
LinearClassifier
LinearRegressor
DNNLinearCombinedClassifier
DNNLinearCombinedRegressor
.
- All our prebuilt binaries have been built with cuDNN 6. We anticipate releasing TensorFlow 1.4 with cuDNN 7.
import tensorflow
now goes much faster.- Adds a file cache to the GCS filesystem with configurable max staleness for file contents. This permits caching of file contents across close/open boundaries.
- Added an axis parameter to
tf.gather
. - Added a
constant_values
keyword argument totf.pad
. - Adds
Dataset.interleave
transformation. - Add
ConcatenateDataset
to concatenate two datasets. - Added Mobilenet support to TensorFlow for Poets training script.
- Adds a block cache to the GCS filesystem with configurable block size and count.
- SinhArcSinh bijector added.
- Added
Dataset.list_files
API. - Introduces new operations and Python bindings for the Cloud TPU.
- Adding TensorFlow-iOS CocoaPod for symmetry with tensorflow-android.
- Introduces base implementations of ClusterResolvers.
- Unify memory representations of TensorShape and PartialTensorShape. As a consequence, tensors now have a maximum of 254 dimensions, not 255.
- Changed references to LIBXSMM to use version 1.8.1.
- TensorFlow Debugger (tfdbg):
- Display summaries of numeric tensor values with the
-s
flag to commandprint_tensor
orpt
. - Display feed values with the
print_feed
orpf
command and clickable links in the curses UI. - Runtime profiler at the op level and the Python source line level with the
run -p
command.
- Display summaries of numeric tensor values with the
- Initial release of the statistical distribution library
tf.distributions
. - GPU kernels and speed improvements for unary
tf.where
andtf.nn.top_k
. - Monotonic Attention wrappers added to
tf.contrib.seq2seq
. - Added
tf.contrib.signal
, a library for signal processing primitives. - Added
tf.contrib.resampler
, containing CPU and GPU ops for differentiable resampling of images.
tf.RewriterConfig
was removed from the Python API after being available in 1.2 release candidates (it was never in an actual release). Graph rewriting is still available, just not astf.RewriterConfig
. Instead add an explicit import.- Breaking change to
tf.contrib.data.Dataset
APIs that expect a nested structure. Lists are now converted totf.Tensor
implicitly. You may need to change uses of lists to tuples in existing code. In addition, dicts are now supported as a nested structure.
- Adds tf.contrib.nn.rank_sampled_softmax_loss, a sampled-softmax variant that can improve rank loss.
tf.contrib.metrics
.{streaming_covariance,streaming_pearson_correlation} modified to return nan when they have seen less or equal to 1 unit of weight.- Adds time series models to contrib. See contrib/timeseries/README.md for details.
- Adds FULLY_CONNECTED Op to tensorflow/lite/schema.fbs
- Tensorflow_gpu compilation fails with Bazel 0.5.3.
- Fixes
strides
andbegin
dtype mismatch when slicing using int64 Tensor index in python. - Improved convolution padding documentation.
- Add a tag constant, gpu, to present graph with GPU support.
saved_model.utils
now support SparseTensors transparently.- A more efficient implementation of non-max suppression.
- Add support for the shrinkage-type L2 to FtrlOptimizer in addition to the online L2 it already supports.
- Fix negative variance in moments calculation.
- Expand UniqueOp Benchmark Tests to cover more collision cases.
- Improves stability of GCS filesystem on Mac.
- Add time estimation to HloCostAnalysis.
- Fixed the bug in Estimator that params in constructor was not a deepcopy of the user provided one. This bugs inadvertently enabled user to mutate the params after the creation of Estimator, leading to potentially undefined behavior.
- Added None check for save_path in
saver.restore
. - Register devices under their legacy names in device_mgr to ease the transition to clusterspec-propagated configurations.
- VectorExponential added to distributions.
- Add a bitwise module with bitwise_and, bitwise_or, bitwise_xor, and invert functions.
- Add fixed-grid ODE integration routines.
- Allow passing bounds to ScipyOptimizerInterface.
- Correctness fixes for fft_length parameter to
tf.spectral.rfft
&tf.spectral.irfft
. - Exported model signatures using the 'predict' method will no longer have their input and output keys silently ignored and rewritten to 'inputs' and 'outputs'. If a model was exported with different names before 1.2, and is now served with tensorflow/serving, it will accept requests using 'inputs' and 'outputs'. Starting at 1.2, such a model will accept the keys specified during export. Therefore, inference requests using 'inputs' and 'outputs' may start to fail. To fix this, either update any inference clients to send requests with the actual input and output keys used by the trainer code, or conversely, update the trainer code to name the input and output Tensors 'inputs' and 'outputs', respectively. Signatures using the 'classify' and 'regress' methods are not affected by this change; they will continue to standardize their input and output keys as before.
- Add in-memory caching to the Dataset API.
- Set default end_of_sequence variable in datasets iterators to false.
- [Performance] Increase performance of
tf.layers.conv2d
when setting use_bias=True by 2x by using nn.bias_add. - Update iOS examples to use CocoaPods, and moved to tensorflow/examples/ios.
- Adds a family= attribute in
tf.summary
ops to allow controlling the tab name used in Tensorboard for organizing summaries. - When GPU is configured, do not require --config=cuda, instead, automatically build for GPU if this is requested in the configure script.
- Fix incorrect sampling of small probabilities in CPU/GPU multinomial.
- Add a list_devices() API on sessions to list devices within a cluster. Additionally, this change augment the ListDevices master API to support specifying a session.
- Allow uses of over-parameterized separable convolution.
- TensorForest multi-regression bug fix.
- Framework now supports armv7, cocoapods.org now displays correct page.
- Script to create iOS framework for CocoaPods.
- Android releases of TensorFlow are now pushed to jcenter for easier integration into apps. See https://github.com/tensorflow/tensorflow/blob/master/tensorflow/tools/android/inference_interface/README.md for more details.
- TensorFlow Debugger (tfdbg):
- Fixed a bug that prevented tfdbg from functioning with multi-GPU setups.
- Fixed a bug that prevented tfdbg from working with
tf.Session.make_callable
.
This release contains contributions from many people at Google, as well as:
4F2E4A2E, Adriano Carmezim, Adrià Arrufat, Alan Yee, Alex Lattas, Alex Rothberg, Alexandr Baranezky, Ali Siddiqui, Andreas Solleder, Andrei Costinescu, Andrew Hundt, Androbin, Andy Kernahan, Anish Shah, Anthony Platanios, Arvinds-Ds, b1rd, Baptiste Arnaud, Ben Mabey, Benedikt Linse, Beomsu Kim, Bo Wang, Boyuan Deng, Brett Koonce, Bruno Rosa, Carl Thomé, Changming Sun, Chase Roberts, Chirag Bhatia, Chris Antaki, Chris Hoyean Song, Chris Tava, Christos Nikolaou, Croath Liu, cxx, Czxck001, Daniel Ylitalo, Danny Goodman, Darren Garvey, David Brailovsky, David Norman, DavidNorman, davidpham87, ddurham2, Dhruv, DimanNe, Drew Hintz, Dustin Tran, Earthson Lu, ethiraj, Fabian Winnen, Fei Sun, Freedom" Koan-Sin Tan, Fritz Obermeyer, Gao, Xiang, Gautam, Guenther Schmuelling, Gyu-Ho Lee, Hauke Brammer, horance, Humanity123, J Alammar, Jayeol Chun, Jeroen BéDorf, Jianfei Wang, jiefangxuanyan, Jing Jun Yin, Joan Puigcerver, Joel Hestness, Johannes Mayer, John Lawson, Johnson145, Jon Malmaud, Jonathan Alvarez-Gutierrez, Juang, Yi-Lin, Julian Viereck, Kaarthik Sivashanmugam, Karl Lessard, [email protected], Kevin Carbone, Kevin Van Der Burgt, Kongsea, ksellesk, lanhin, Lef Ioannidis, Liangliang He, Louis Tiao, Luke Iwanski, LáSzló Csomor, magixsno, Mahmoud Abuzaina, Marcel Hlopko, Mark Neumann, Maxwell Paul Brickner, mdfaijul, MichaëL Defferrard, Michał JastrzęBski, Michele Colombo, Mike Brodie, Mosnoi Ion, mouradmourafiq, myPrecious, Nayana Thorat, Neeraj Kashyap, Nelson Liu, Niranjan Hasabnis, Olivier Moindrot, orome, Pankaj Gupta, Paul Van Eck, peeyush18, Peng Yu, Pierre, preciousdp11, qjivy, Raingo, raoqiyu, ribx, Richard S. Imaoka, Rishabh Patel, Robert Walecki, Rockford Wei, Ryan Kung, Sahil Dua, Sandip Giri, Sayed Hadi Hashemi, sgt101, Shitian Ni, Shuolongbj, Siim PõDer, Simon Perkins, sj6077, SOLARIS, Spotlight0xff, Steffen Eberbach, Stephen Fox, superryanguo, Sven Mayer, Tapan Prakash, Tiago Morais Morgado, Till Hoffmann, Tj Rana, Vadim Markovtsev, vhasanov, Wei Wu, windead, Yan (Asta) Li, Yan Chen, Yann Henon, Yi Wang, Yong Tang, yorkie, Yuan (Terry) Tang, Yuxin Wu, zhengjiajin, zhongzyd, 黄璞
We are also grateful to all who filed issues or helped resolve them, asked and answered questions, and were part of inspiring discussions.
- Updating markdown version required to >= 2.6.8.
- Support tensors as dropout rates again, by removing the min(max(..))
-
Python 3.6 support on Windows.
-
Added
tf.layers.conv3d_transpose
layer for spatio temporal deconvolution. -
Added
tf.Session.make_callable()
, which provides a lower overhead means of running a similar step multiple times. -
Added libverbs-based RDMA support to contrib (courtesy @junshi15 from Yahoo).
-
Bring
tf.feature_column.*
into the API. Non-deprecated functionality fromtf.contrib.layers.*
is moved totf.feature_column.*
with cosmetic changes. -
RNNCell
objects now subclasstf.layers.Layer
. The strictness described in the TensorFlow 1.1 release is gone: The first time an RNNCell is used, it caches its scope. All future uses of the RNNCell will reuse variables from that same scope. This is a breaking change from the behavior of RNNCells in TensorFlow versions <= 1.0.1. TensorFlow 1.1 had checks in place to ensure old code works correctly with the new semantics; this version allows more flexible uses of RNNCell but can lead to subtle errors if using code meant for TensorFlow <= 1.0.1. For example, writing:MultiRNNCell([lstm] * 5)
will now build a 5-layer LSTM stack where each layer shares the same parameters. To get 5 layers each with their own parameters, write:MultiRNNCell([LSTMCell(...) for _ in range(5)])
. If at all unsure, first test your code with TF 1.1; ensure it raises no errors, and then upgrade to TF 1.2. -
RNNCells' variable names have been renamed for consistency with Keras layers. Specifically, the previous variable names "weights" and "biases" have been changed to "kernel" and "bias", respectively. This may cause backward incompatibility with regard to your old checkpoints containing such RNN cells, in which case you can use the tool checkpoint_convert script to convert the variable names in your old checkpoints.
-
Many of the RNN functions and classes that were in the
tf.nn
namespace before the 1.0 release and which were moved totf.contrib.rnn
have now been moved back to the core namespace. This includesRNNCell
,LSTMCell
,GRUCell
, and a number of other cells. These now reside intf.nn.rnn_cell
(with aliases intf.contrib.rnn
for backwards compatibility). The originaltf.nn.rnn
function is nowtf.nn.static_rnn
, and the bidirectional static and state saving static rnn functions are also now back in thetf.nn
namespace.Notable exceptions are the
EmbeddingWrapper
,InputProjectionWrapper
andOutputProjectionWrapper
, which will slowly be moved to deprecation intf.contrib.rnn
. These are inefficient wrappers that should often be replaced by callingembedding_lookup
orlayers.dense
as pre- or post- processing of the rnn. For RNN decoding, this functionality has been replaced with an alternative API intf.contrib.seq2seq
. -
Intel MKL Integration (https://software.intel.com/en-us/articles/tensorflow-optimizations-on-modern-intel-architecture). Intel developed a number of optimized deep learning primitives: In addition to matrix multiplication and convolution, these building blocks include: Direct batched convolution Pooling: maximum, minimum, average Normalization: LRN, batch normalization Activation: rectified linear unit (ReLU) Data manipulation: multi-dimensional transposition (conversion), split, concat, sum and scale.
-
TensorForest Estimator now supports SavedModel export for serving.
-
Support client-provided ClusterSpec's and propagate them to all workers to enable the creation of dynamic TensorFlow clusters.
-
TensorFlow C library now available for Windows.
-
We released a new open-source version of TensorBoard.
-
SavedModel CLI
tool available to inspect and execute MetaGraph in SavedModel -
Android releases of TensorFlow are now pushed to jcenter for easier integration into apps. See https://github.com/tensorflow/tensorflow/blob/master/tensorflow/tools/android/inference_interface/README.md for more details.
- TensorFlow 1.2 may be the last time we build with cuDNN 5.1. Starting with TensorFlow 1.3, we will try to build all our prebuilt binaries with cuDNN 6.0. While we will try to keep our source code compatible with cuDNN 5.1, it will be best effort.
org.tensorflow.contrib.android.TensorFlowInferenceInterface
now throws exceptions where possible and has simplified method signatures.
- Added
tf.contrib.util.create_example
. - Added bilinear interpolation to
tf.contrib.image
. - Add
tf.contrib.stateless
for random ops with custom seed control. - MultivariateNormalFullCovariance added to contrib/distributions/
- tensorflow/contrib/rnn undergoes RNN cell variable renaming for consistency with Keras layers. Specifically, the previous variable names "weights" and "biases" are changed to "kernel" and "bias", respectively. This may cause backward incompatibility with regard to your old checkpoints containing such RNN cells, in which case you can use the checkpoint_convert script to convert the variable names in your old checkpoints.
- Added
tf.contrib.kernel_methods
module with Ops and estimators for primal (explicit) kernel methods in TensorFlow.
- In python,
Operation.get_attr
on type attributes returns the Python DType version of the type to match expected get_attr documentation rather than the protobuf enum. - tensorflow/contrib/rnn undergoes RNN cell variable renaming for consistency with Keras layers. Specifically, the previous variable names "weights" and "biases" are changed to "kernel" and "bias", respectively.
- Changed MIN_SDK version to 8.0 when building iOS libraries.
- Fixed LIBXSMM integration.
- Make decode_jpeg/decode_png/decode_gif handle all formats, since users frequently try to decode an image as the wrong type.
- Improve implicit broadcasting lowering.
- Improving stability of GCS/BigQuery clients by a faster retrying of stale transmissions.
- Remove OpKernelConstruction::op_def() as part of minimizing proto dependencies.
- VectorLaplaceDiag distribution added.
- Android demo no longer requires libtensorflow_demo.so to run (libtensorflow_inference.so still required)
- Added
categorical_column_with_vocabulary_file
. - Introduce ops for batching/unbatching tensors across Session::Run() calls.
- Add tf.log_sigmoid(x) = tf.log(tf.sigmoid(x)) = -tf.nn.softplus(-x).
- Changed hooks lists to immutable tuples, and now allow any iterable for the associated arguments.
- Introduce TFDecorator.
- Added an Mfcc op for speech feature generation.
- Improved DirectSession::Run() overhead and error checking. Feeding a value of the wrong type will now synchronously raise an INVALID_ARGUMENT error instead of asynchronously raising an INTERNAL error. Code that depends on the (undefined) behavior when feeding a tensor of the wrong type may need to be updated.
- Added unreduced NONE, and reduced MEAN options for losses. Removed "WEIGHTED_" prefix from other Reduction constants.
- assertAllClose now handles dicts.
- Added Gmock matcher for HloInstructions.
- Add var name to errors on variable restore.
- Added an AudioSpectrogram op for audio feature generation.
- Added
reduction
arg to losses. tf.placeholder
can represent scalar shapes and partially known.- Remove estimator_spec(mode) argument.
- Added an AudioSpectrogram op for audio feature generation.
- TensorBoard disables all runs by default if there are more than 40 runs.
- Removed old doc generator code.
- GCS file system integration now supports domain buckets, e.g gs://bucket.domain.com/path.
- Add
tf.summary.text
for outputting text to TensorBoard. - The "run" command of tfdbg's command-line interface now supports filtering of tensors by node name, op type and tensor dtype.
tf.string_to_number
now supports int64 and float64 outputs.
This release contains contributions from many people at Google, as well as:
4F2E4A2E, Aaron Schumacher, Abhi Agg, admcrae, Adriano Carmezim, Adrià Arrufat, agramesh1, Akimitsu Seo, Alan Mosca, Alex Egg, Alex Rothberg, Alexander Heinecke, Alexander Matyasko, Alexandr Baranezky, Alexandre Caulier, Ali Siddiqui, Anand Venkat, Andrew Hundt, Androbin, Anmol Sharma, Arie, Arno Leist, Arron Cao, AuréLien Geron, Bairen Yi, Beomsu Kim, Carl Thomé, cfperez, Changming Sun, Corey Wharton, critiqjo, Dalei Li, Daniel Rasmussen, Daniel Trebbien, DaríO Hereñú, David Eng, David Norman, David Y. Zhang, Davy Song, ddurham2, Deepak Subburam, Dmytro Kyrychuk, Dominic Rossi, Dominik SchlöSser, Dustin Tran, Eduardo Pinho, Egil Martinsson, Elliot Saba, Eric Bigelow, Erik Smistad, Evan Klitzke, Fabrizio Milo, Falcon Dai, Fei Gao, FloopCZ, Fung Lam, Gautam, GBLin5566, Greg Peatfield, Gu Wang, Guenther Schmuelling, Hans Pabst, Harun Gunaydin, Huaizheng, Ido Shamay, Ikaro Silva, Ilya Edrenkin, Immexxx, James Mishra, Jamie Cooke, Jay Young, Jayaram Bobba, Jianfei Wang, jinghua2, Joey Meyer, John Maidens, Jonghoon Jin, Julian Villella, Jun Kim, Jun Shi, Junwei Pan, jyegerlehner, Karan Desai, Karel Van De Plassche, Kb Sriram, KhabarlakKonstantin, Koan-Sin Tan, krivard, Kwotsin, Leandro Gracia Gil, Li Chen, Liangliang He, Louie Helm, lspvic, Luiz Henrique Soares, LáSzló Csomor, Mark Wong, Mathew Wicks, Matthew Rahtz, Maxwell Paul Brickner, Michael Hofmann, Miguel Flores Ruiz De Eguino, MikeTam1021, Mortada Mehyar, Mycosynth, Namnamseo, Nate Harada, Neven Miculinic, Nghia Tran, Nick Lyu, Niranjan Hasabnis, Nishidha, Oleksii Kuchaiev, Oyesh Mann Singh, Panmari, Patrick, Paul Van Eck, Piyush Chaudhary, Quim Llimona, Raingo, Richard Davies, Ruben Vereecken, Sahit Chintalapudi, Sam Abrahams, Santiago Castro, Scott Sievert, Sean O'Keefe, Sebastian Schlecht, Shane, Shubhankar Deshpande, Spencer Schaber, Sunyeop Lee, t13m, td2014, Thomas H. P. Andersen, Toby Petty, Umang Mehta, Vadim Markovtsev, Valentin Iovene, Vincent Zhao, Vit Stepanovs, Vivek Rane, Vu Pham, wannabesrevenge, weipingpku, wuhaixutab, wydwww, Xiang Gao, Xiaolin Lin, xiaoyaozhuzi, Yaroslav Bulatov, Yi Liu, Yoshihiro Sugi, Yuan (Terry) Tang, Yuming Wang, Yuxin Wu, Zader Zheng, Zhaojun Zhang, zhengjiajin, ZhipengShen, Ziming Dong, zjj2wry
We are also grateful to all who filed issues or helped resolve them, asked and answered questions, and were part of inspiring discussions.
- Added Java API support for Windows.
- Added
tf.spectral
module. Moved existing FFT ops totf.spectral
while keeping an alias in the old location (tf.*
). - Added 1D, 2D and 3D Fourier transform ops for real signals to
tf.spectral
. - Added a
tf.bincount
function. - Added Keras 2 API to contrib.
- Added a new lightweight queue-like object -
RecordInput
. - Added
tf.contrib.image.compose_transforms
function. - Bring
tf.estimator.*
into the API. Non-deprecated functionality fromtf.contrib.learn.Estimator
is moved totf.estimator.Estimator
with cosmetic changes. - Docker images: TF images on gcr.io and Docker Hub are upgraded to ubuntu:16.04.
- Added the following features to TensorFlow Debugger (tfdbg):
- Ability to inspect Python source file against TF ops and tensors (command
print_source
/ps
) - New navigation bar in Curses-based UI
- NodeStepper (command
invoke_stepper
) now uses intermediate tensor dumps. It also usesTensorHandles
as direct feeds during successivecont
calls for improved performance and reduced memory consumption.
- Ability to inspect Python source file against TF ops and tensors (command
- Initial release of installation guides for Java, C, and Go.
- Added Text Dashboard to TensorBoard.
- TensorFlow 1.1.0 will be the last time we release a binary with Mac GPU support. Going forward, we will stop testing on Mac GPU systems. We continue to welcome patches that maintain Mac GPU support, and we will try to keep the Mac GPU build working.
- The behavior of RNNCells is now stricter due to the transition towards making RNNCells act more like Keras layers.
- If an RNNCell is used twice in two different variable scopes, an error is raised describing how to avoid this behavior.
- If an RNNCell is used in a variable scope with existing conflicting variables, an error is raised showing that the RNNCell must be constructed with argument
reuse=True
.
- Deprecated contrib/distributions
pmf
,pdf
,log_pmf
,log_pdf
. - Moved
bayesflow.special_math
to distributions. tf.contrib.tensor_forest.python.tensor_forest.RandomForestDeviceAssigner
removed.- Changed some MVN classes and parameters:
tf.contrib.distributions.MultivariateNormalFull
replaced bytf.contrib.distributions.MultivariateNormalTriL
.tf.contrib.distributions.MultivariateNormalCholesky
replaced bytf.contrib.distributions.MultivariateNormalTriL
tf.contrib.distributions.MultivariateNormalDiagWithSoftplusStDev
replaced bytf.contrib.distributions.MultivariateNormalDiagWithSoftplusScale
tf.contrib.distributions.MultivariateNormalDiag
arguments changed frommu
,diag_stddev
tolog
,scale_diag
.tf.contrib.distributions.MultivariateNormalDiagPlusVDVT
removed.tf.contrib.distributions.MultivariateNormalDiagPlusLowRank
added.
- Java: Support for loading models exported using the SavedModel API (courtesy @EronWright).
- Go: Added support for incremental graph execution.
- Fix a bug in the WALS solver when single-threaded.
- Added support for integer sparse feature values in
tf.contrib.layers.sparse_column_with_keys
. - Fixed
tf.set_random_seed(0)
to be deterministic for all ops. - Stability improvements for the GCS file system support.
- Improved TensorForest performance.
- Added support for multiple filename globs in
tf.matching_files
. LogMessage
now includes a timestamp as beginning of a message.- Added MultiBox person detector example standalone binary.
- Android demo: Makefile build functionality added to build.gradle to fully support building TensorFlow demo in Android on Windows.
- Android demo: read MultiBox priors from txt file rather than protobuf.
- Added colocation constraints to
StagingArea
. sparse_matmul_op
reenabled for Android builds.- Restrict weights rank to be the same as the broadcast target, to avoid ambiguity on broadcast rules.
- Upgraded libxsmm to 1.7.1 and applied other changes for performance and memory usage.
- Fixed bfloat16 integration of LIBXSMM sparse mat-mul.
- Improved performance and reduce memory usage by allowing ops to forward input buffers to output buffers and perform computations in-place.
- Improved the performance of CPU assignment for strings.
- Speed up matrix * vector multiplication and matrix * matrix with unknown shapes.
- C API: Graph imports now support input remapping, control dependencies, and returning imported nodes (see
TF_GraphImportGraphDefWithReturnOutputs()
) - Multiple C++ API updates.
- Multiple TensorBoard updates including:
- Users can now view image summaries at various sampled steps (instead of just the last step).
- Bugs involving switching runs as well as the image dashboard are fixed.
- Removed data download links from TensorBoard.
- TensorBoard uses a relative data directory, for easier embedding.
- TensorBoard automatically ignores outliers for domain calculation, and formats proportional values consistently.
- Multiple tfdbg bug fixes:
- Fixed Windows compatibility issues.
- Command history now persists across runs.
- Bug fix in graph validation related to
tf.while_loops
.
- Java Maven fixes for bugs with Windows installation.
- Backport fixes and improvements from external keras.
- Keras config file handling fix.
This release contains contributions from many people at Google, as well as:
A. Besir Kurtulmus, Adal Chiriliuc, @akash, Alec-Desouza, Alex Rothberg, Alex Sergeev, Alexander Heinecke, Allen Guo, Andreas Madsen, Ankesh Anand, Anton Loss, @Aravind, @Arie, Ashutosh Das, AuréLien Geron, Bairen Yi, @bakunyo, Ben Visser, Brady Zhou, Calpa Liu, Changming Sun, Chih Cheng Liang, Christopher Berner, Clark Zinzow, @Conchylicultor, Dan Ellis, Dan J, Dan Jarvis, Daniel Ylitalo, Darren Garvey, David Norman, David Truong, @DavidNorman, Dimitar Pavlov, Dmitry Persiyanov, @Eddie, @elirex, Erfan Noury, Eron Wright, Evgeny Mazovetskiy, Fabrizio (Misto) Milo, @fanlu, Fisher Coder, Florian Courtial, Franck Dernoncourt, Gagan Goel, Gao, Xiang, @Gautam, Gefu Tang, @guilherme, @guschmue, Hannah Provenza, Hans Pabst, @hartb, Hsiao Yi, Huazuo Gao, Igor ChorążEwicz, Ivan Smirnov, Jakub Kolodziejczyk, Jason Gavris, Jason Morton, Jay Young, Jayaram Bobba, Jeremy Sawruk, Jiaming Liu, Jihun Choi, @jiqiu, Joan Thibault, John C F, Jojy George Varghese, Jon Malmaud, Julian Berman, Julian Niedermeier, Junpeng Lao, Kai Sasaki, @Kankroc, Karl Lessard, Kyle Bostelmann, @Lezcano, Li Yi, Luo Yun, @lurker, Mahmoud-Abuzaina, Mandeep Singh, Marek Kolodziej, Mark Szepieniec, Martial Hue, Medhat Omr, Memo Akten, Michael Gharbi, MichaëL Defferrard, Milan Straka, @MircoT, @mlucool, Muammar Ibn Faisal, Nayana Thorat, @nghiattran, Nicholas Connor, Nikolaas Steenbergen, Niraj Patel, Niranjan Hasabnis, @Panmari, Pavel Bulanov, Philip Pries Henningsen, Philipp Jund, @polonez, Prayag Verma, Rahul Kavi, Raphael Gontijo Lopes, @rasbt, Raven Iqqe, Reid Pryzant, Richard Shin, Rizwan Asif, Russell Kaplan, Ryo Asakura, RüDiger Busche, Saisai Shao, Sam Abrahams, @sanosay, Sean Papay, @seaotterman, @selay01, Shaurya Sharma, Sriram Narayanamoorthy, Stefano Probst, @taknevski, @tbonza, @teldridge11, Tim Anglade, Tomas Reimers, Tomer Gafner, Valentin Iovene, Vamsi Sripathi, Viktor Malyi, Vit Stepanovs, Vivek Rane, Vlad Firoiu, @wangg12, @will, Xiaoyu Tao, Yaroslav Bulatov, Yi Liu, Yuan (Terry) Tang, @Yufeng, Yuming Wang, Yuxin Wu, Zafar Takhirov, Ziming Dong
We are also grateful to all who filed issues or helped resolve them, asked and answered questions, and were part of inspiring discussions.
- Change GraphConstructor to not increase the version when importing, but instead take the min of all versions.
- Google Cloud Storage fixes.
- Removed
tf.core
andtf.python
modules from the API. These were never intended to be exposed. Please use the same objects through top-leveltf
module instead.
- XLA (experimental): initial release of XLA, a domain-specific compiler for TensorFlow graphs, that targets CPUs and GPUs.
- TensorFlow Debugger (tfdbg): command-line interface and API.
- New python 3 docker images added.
- Made pip packages pypi compliant. TensorFlow can now be installed by
pip install tensorflow
command. - Several python API calls have been changed to resemble NumPy more closely.
- Android: person detection + tracking demo implementing Scalable Object Detection using Deep Neural Networks.
- New (experimental) Java API.
- Add new Android image stylization demo based on "A Learned Representation For Artistic Style", and add YOLO object detector support.
To help you upgrade your existing TensorFlow Python code to match the API changes below, we have prepared a conversion script.
- TensorFlow/models have been moved to a separate github repository.
- Division and modulus operators (/, //, %) now match Python (flooring)
semantics. This applies to
tf.div
andtf.mod
as well. To obtain forced integer truncation based behaviors you can usetf.truncatediv
andtf.truncatemod
. tf.divide()
is now the recommended division function.tf.div()
will remain, but its semantics do not respond to Python 3 orfrom future
mechanisms.- tf.reverse() now takes indices of axes to be reversed. E.g.
tf.reverse(a, [True, False, True])
must now be written astf.reverse(a, [0, 2])
.tf.reverse_v2()
will remain until 1.0 final. tf.mul
,tf.sub
andtf.neg
are deprecated in favor oftf.multiply
,tf.subtract
andtf.negative
.tf.pack
andtf.unpack
are deprecated in favor oftf.stack
andtf.unstack
.TensorArray.pack
andTensorArray.unpack
are getting deprecated in favor ofTensorArray.stack
andTensorArray.unstack
.- The following Python functions have had their arguments changed to use
axis
when referring to specific dimensions. We have kept the old keyword arguments for compatibility currently, but we will be removing them well before the final 1.0.tf.argmax
:dimension
becomesaxis
tf.argmin
:dimension
becomesaxis
tf.count_nonzero
:reduction_indices
becomesaxis
tf.expand_dims
:dim
becomesaxis
tf.reduce_all
:reduction_indices
becomesaxis
tf.reduce_any
:reduction_indices
becomesaxis
tf.reduce_join
:reduction_indices
becomesaxis
tf.reduce_logsumexp
:reduction_indices
becomesaxis
tf.reduce_max
:reduction_indices
becomesaxis
tf.reduce_mean
:reduction_indices
becomesaxis
tf.reduce_min
:reduction_indices
becomesaxis
tf.reduce_prod
:reduction_indices
becomesaxis
tf.reduce_sum
:reduction_indices
becomesaxis
tf.reverse_sequence
:batch_dim
becomesbatch_axis
,seq_dim
becomesseq_axis
tf.sparse_concat
:concat_dim
becomesaxis
tf.sparse_reduce_sum
:reduction_axes
becomesaxis
tf.sparse_reduce_sum_sparse
:reduction_axes
becomesaxis
tf.sparse_split
:split_dim
becomesaxis
tf.listdiff
has been renamed totf.setdiff1d
to match NumPy naming.tf.inv
has been renamed to betf.reciprocal
(component-wise reciprocal) to avoid confusion withnp.inv
which is matrix inversion- tf.round now uses banker's rounding (round to even) semantics to match NumPy.
tf.split
now takes arguments in a reversed order and with different keywords. In particular, we now match NumPy order astf.split(value, num_or_size_splits, axis)
.tf.sparse_split
now takes arguments in reversed order and with different keywords. In particular we now match NumPy order astf.sparse_split(sp_input, num_split, axis)
. NOTE: we have temporarily madetf.sparse_split
require keyword arguments.tf.concat
now takes arguments in reversed order and with different keywords. In particular we now match NumPy order astf.concat(values, axis, name)
.tf.image.decode_jpeg
by default uses the faster DCT method, sacrificing a little fidelity for improved speed. One can revert to the old behavior by specifying the attributedct_method='INTEGER_ACCURATE'
.tf.complex_abs
has been removed from the Python interface.tf.abs
supports complex tensors and should be used instead.- In the C++ API (in tensorflow/cc), Input, Output, etc. have moved from the tensorflow::ops namespace to tensorflow.
- Template.
var_scope
property renamed to.variable_scope
- SyncReplicasOptimizer is removed and SyncReplicasOptimizerV2 renamed to SyncReplicasOptimizer.
tf.zeros_initializer()
andtf.ones_initializer()
now return a callable that must be called with initializer arguments, in your code replacetf.zeros_initializer
withtf.zeros_initializer()
.SparseTensor.shape
has been renamed toSparseTensor.dense_shape
. Same forSparseTensorValue.shape
.- Replace tf.scalar_summary, tf.histogram_summary, tf.audio_summary, tf.image_summary with tf.summary.scalar, tf.summary.histogram, tf.summary.audio, tf.summary.image, respectively. The new summary ops take name rather than tag as their first argument, meaning summary ops now respect TensorFlow name scopes.
- Replace tf.train.SummaryWriter and tf.train.SummaryWriterCache with tf.summary.FileWriter and tf.summary.FileWriterCache.
- Removes RegisterShape from public API. Use C++ shape function registration instead.
- Deprecated
_ref
dtypes from the python API. - In the C++ API (in tensorflow/cc), Input, Output, etc. have moved from the tensorflow::ops namespace to tensorflow.
- Change arg order for
{softmax,sparse_softmax,sigmoid}_cross_entropy_with_logits
to be (labels, predictions), and force use of named args. - tf.nn.rnn_cell.* and most functions in tf.nn.rnn.* (with the exception of dynamic_rnn and raw_rnn) are temporarily in tf.contrib.rnn. They will be moved back into core for TF 1.2.
tf.nn.sampled_softmax_loss
andtf.nn.nce_loss
have both changed their API such that you need to switch theinputs, labels
tolabels, inputs
parameters.- The shape keyword argument of the
SparseTensor
constructor changes its name todense_shape
between Tensorflow 0.12 and Tensorflow 1.0.
- Numerous C++ API updates.
- New op:
parallel_stack
. - Introducing common tf io compression options constants for RecordReader/RecordWriter.
- Add
sparse_column_with_vocabulary_file
, to specify a feature column that transform string features to IDs, where the mapping is defined by a vocabulary file. - Added
index_to_string_table
which returns a lookup table that maps indices to strings. - Add
string_to_index_table
, which returns a lookup table that matches strings to indices. - Add a
ParallelForWithWorkerId
function. - Add
string_to_index_table
, which returns a lookup table that matches strings to indices. - Support restore session from checkpoint files in v2 in
contrib/session_bundle
. - Added a tf.contrib.image.rotate function for arbitrary angles.
- Added
tf.contrib.framework.filter_variables
as a convenience function to filter lists of variables based on regular expressions. make_template()
takes an optionalcustom_getter_ param
.- Added comment about how existing directories are handled by
recursive_create_dir
. - Added an op for QR factorizations.
- Divides and mods in Python API now use flooring (Python) semantics.
- Android: pre-built libs are now built nightly.
- Android: cmake/gradle build for TensorFlow Inference library under
contrib/android/cmake
- Android: Much more robust Session initialization code.
- Android: TF stats now exposed directly in demo and log when debug mode is active
- Android: new/better README.md documentation
- saved_model is available as
tf.saved_model
. - Empty op is now stateful.
- Improve speed of scatter_update on the cpu for ASSIGN operations.
- Change
reduce_join
to treatreduction_indices
in the same way as otherreduce_
ops. - Move
TensorForestEstimator
tocontrib/tensor_forest
. - Enable compiler optimizations by default and allow configuration in configure.
tf.divide
now honors the name field.- Make metrics weight broadcasting more strict.
- Add new queue-like
StagingArea
and new ops:stage
andunstage
. - Enable inplace update ops for strings on CPU. Speed up string concat.
This release contains contributions from many people at Google, as well as:
Aaron Hu, Abhishek Aggarwal, Adam Michael, Adriano Carmezim, @AfirSraftGarrier, Alexander Novikov, Alexander Rosenberg Johansen, Andrew Gibiansky, Andrew Hundt, Anish Shah, Anton Loss, @b0noI, @BoyuanJiang, Carl Thomé, Chad Kennedy, Comic Chang, Connor Braa, Daniel N. Lang, Daniel Trebbien, @danielgordon10, Darcy Liu, Darren Garvey, Dmitri Lapin, Eron Wright, Evan Cofer, Fabrizio Milo, Finbarr Timbers, Franck Dernoncourt, Garrett Smith, @guschmue, Hao Wei, Henrik Holst, Huazuo Gao, @Ian, @Issac, Jacob Israel, Jangsoo Park, Jin Kim, Jingtian Peng, John Pope, Kye Bostelmann, Liangliang He, Ling Zhang, Luheng He, Luke Iwanski, @lvli, Michael Basilyan, Mihir Patel, Mikalai Drabovich, Morten Just, @newge, Nick Butlin, Nishant Shukla, Pengfei Ni, Przemyslaw Tredak, @rasbt, @Ronny, Rudolf Rosa, @RustingSword, Sam Abrahams, Sam Putnam, @SeongAhJo, Shi Jiaxin, @skavulya, Steffen MüLler, @TheUSER123, @tiriplicamihai, @vhasanov, Victor Costan, Vit Stepanovs, Wangda Tan, Wenjian Huang, Xingdong Zuo, Yaroslav Bulatov, Yota Toyama, Yuan (Terry) Tang, Yuxin Wu
We are also grateful to all who filed issues or helped resolve them, asked and answered questions, and were part of inspiring discussions.
- TensorFlow now builds and runs on Microsoft Windows (tested on Windows 10, Windows 7, and Windows Server 2016). Supported languages include Python (via a pip package) and C++. CUDA 8.0 and cuDNN 5.1 are supported for GPU acceleration. Known limitations include: It is not currently possible to load a custom op library. The GCS and HDFS file systems are not currently supported. The following ops are not currently implemented: Dequantize, QuantizeAndDequantize, QuantizedAvgPool, QuantizedBatchNomWithGlobalNormalization, QuantizedBiasAdd, QuantizedConcat, QuantizedConv2D, QuantizedMatmul, QuantizedMaxPool, QuantizeDownAndShrinkRange, QuantizedRelu, QuantizedRelu6, QuantizedReshape, QuantizeV2, RequantizationRange, and Requantize.
- Go: Experimental API in Go to create and execute graphs (https://godoc.org/github.com/tensorflow/tensorflow/tensorflow/go)
- New checkpoint format becomes the default in
tf.train.Saver
. Old V1 checkpoints continue to be readable; controlled by thewrite_version
argument,tf.train.Saver
now by default writes out in the new V2 format. It significantly reduces the peak memory required and latency incurred during restore. - Added a new library for library of matrix-free (iterative) solvers for linear equations, linear least-squares, eigenvalues and singular values in tensorflow/contrib/solvers. Initial version has lanczos bidiagonalization, conjugate gradients and CGLS.
- Added gradients for
matrix_solve_ls
andself_adjoint_eig
. - Large cleanup to add second order gradient for ops with C++ gradients and improve existing gradients such that most ops can now be differentiated multiple times.
- Added a solver for ordinary differential equations,
tf.contrib.integrate.odeint
. - New contrib module for tensors with named axes,
tf.contrib.labeled_tensor
. - Visualization of embeddings in TensorBoard.
BusAdjacency
enum replaced with a protocol bufferDeviceLocality
. PCI bus indexing now starts from 1 instead of 0, andbus_id==0
is used where previouslyBUS_ANY
was used.Env::FileExists
andFileSystem::FileExists
now return a tensorflow::Status instead of a bool. Any callers to this function can be converted to a bool by adding .ok() to the call.- The C API type
TF_SessionWithGraph
has been renamed toTF_Session
, indicating its preferred use in language bindings for TensorFlow. What was previouslyTF_Session
has been renamed toTF_DeprecatedSession
. - Renamed
TF_Port
toTF_Output
in the C API. - Removes RegisterShape from public API. Use C++ shape function registration instead.
indexing now starts from 1 instead of 0, and
bus_id==0
is used where previouslyBUS_ANY
was used. - Most RNN cells and RNN functions now use different variable scopes to be
consistent with layers (
tf.contrib.layers
). This means old checkpoints written using this code will not load after this change without providingSaver
a list of variable renames. Examples of variable scope changes includeRNN
->rnn
intf.nn.rnn
,tf.nn.dynamic_rnn
and moving fromLinear/Matrix
->weights
andLinear/Bias
->biases
in most RNN cells. - Deprecated tf.select op. tf.where should be used instead.
SparseTensor.shape
has been renamed toSparseTensor.dense_shape
. Same forSparseTensorValue.shape
.Env::FileExists
andFileSystem::FileExists
now return atensorflow::Status
instead of a bool. Any callers to this function can be converted to a bool by adding.ok()
to the call.- C API: Type
TF_SessionWithGraph
has been renamed toTF_Session
, indicating its preferred use in language bindings for TensorFlow. What was previouslyTF_Session
has been renamed toTF_DeprecatedSession
. - C API: Renamed
TF_Port
toTF_Output
. - C API: The caller retains ownership of
TF_Tensor
objects provided toTF_Run
,TF_SessionRun
,TF_SetAttrTensor
etc. - Renamed
tf.image.per_image_whitening()
totf.image.per_image_standardization()
- Move Summary protobuf constructors to
tf.summary
submodule. - Deprecate
histogram_summary
,audio_summary
,scalar_summary
,image_summary
,merge_summary
, andmerge_all_summaries
. - Combined
batch_*
and regular version of linear algebra and FFT ops. The regular op now handles batches as well. Allbatch_*
Python interfaces were removed. tf.all_variables
,tf.VARIABLES
andtf.initialize_all_variables
renamed totf.global_variables
,tf.GLOBAL_VARIABLES
andtf.global_variables_initializer
respectively.tf.zeros_initializer()
andtf.ones_initializer()
now return a callable that must be called with initializer arguments, in your code replacetf.zeros_initializer
withtf.zeros_initializer()
- Use threadsafe version of
lgamma
function. - Fix
tf.sqrt
handling of negative arguments. - Fixed bug causing incorrect number of threads to be used for multi-threaded benchmarks.
- Performance optimizations for
batch_matmul
on multi-core CPUs. - Improve trace,
matrix_set_diag
,matrix_diag_part
and their gradients to work for rectangular matrices. - Support for SVD of complex valued matrices.
This release contains contributions from many people at Google, as well as:
@a7744hsc, Abhi Agg, @admcrae, Adriano Carmezim, Aki Sukegawa, Alex Kendall, Alexander Rosenberg Johansen, @amcrae, Amlan Kar, Andre Simpelo, Andreas Eberle, Andrew Hundt, Arnaud Lenglet, @b0noI, Balachander Ramachandran, Ben Barsdell, Ben Guidarelli, Benjamin Mularczyk, Burness Duan, @c0g, Changming Sun, @chanis, Corey Wharton, Dan J, Daniel Trebbien, Darren Garvey, David Brailovsky, David Jones, Di Zeng, @DjangoPeng, Dr. Kashif Rasul, @drag0, Fabrizio (Misto) Milo, FabríCio Ceschin, @fp, @Ghedeon, @guschmue, Gökçen Eraslan, Haosdent Huang, Haroen Viaene, Harold Cooper, Henrik Holst, @hoangmit, Ivan Ukhov, Javier Dehesa, Jingtian Peng, Jithin Odattu, Joan Pastor, Johan Mathe, Johannes Mayer, Jongwook Choi, Justus Schwabedal, Kai Wolf, Kamil Hryniewicz, Kamran Amini, Karen Brems, Karl Lattimer, @kborer, Ken Shirriff, Kevin Rose, Larissa Laich, Laurent Mazare, Leonard Lee, Liang-Chi Hsieh, Liangliang He, Luke Iwanski, Marek Kolodziej, Moustafa Alzantot, @MrQianjinsi, @nagachika, Neil Han, Nick Meehan, Niels Ole Salscheider, Nikhil Mishra, @nschuc, Ondrej Skopek, OndřEj Filip, @OscarDPan, Pablo Moyano, Przemyslaw Tredak, @qitaishui, @Quarazy, @raix852, Philipp Helo, Sam Abrahams, @SriramRamesh, Till Hoffmann, Tushar Soni, @tvn, @tyfkda, Uwe Schmidt, Victor Villas, Vit Stepanovs, Vladislav Gubarev, @wujingyue, Xuesong Yang, Yi Liu, Yilei Yang, @youyou3, Yuan (Terry) Tang, Yuming Wang, Zafar Takhirov, @zhongyuk, Ziming Dong, @guotong1988
We are also grateful to all who filed issues or helped resolve them, asked and answered questions, and were part of inspiring discussions.
- CUDA 8 support.
- cuDNN 5 support.
- HDFS Support.
- Adds Fused LSTM support via cuDNN 5 in
tensorflow/contrib/cudnn_rnn
. - Improved support for NumPy style basic slicing including non-1 strides,
ellipses, newaxis, and negative indices. For example complicated expressions
like
foo[1, 2:4, tf.newaxis, ..., :-3:-1, :]
are now supported. In addition we have preliminary (non-broadcasting) support for sliced assignment to variables. In particular one can writevar[1:3].assign([1,11,111])
. - Deprecated
tf.op_scope
andtf.variable_op_scope
in favor of a unifiedtf.name_scope
andtf.variable_scope
. The new argument order oftf.variable_scope
is incompatible with previous versions. - Introducing
core/util/tensor_bundle
module: a module to efficiently serialize/deserialize tensors to disk. Will be used in TF's new checkpoint format. - Added tf.svd for computing the singular value decomposition (SVD) of dense matrices or batches of matrices (CPU only).
- Added gradients for eigenvalues and eigenvectors computed using
self_adjoint_eig
orself_adjoint_eigvals
. - Eliminated
batch_*
methods for most linear algebra and FFT ops and promoted the non-batch version of the ops to handle batches of matrices. - Tracing/timeline support for distributed runtime (no GPU profiler yet).
- C API gives access to inferred shapes with
TF_GraphGetTensorNumDims
andTF_GraphGetTensorShape
. - Shape functions for core ops have moved to C++ via
REGISTER_OP(...).SetShapeFn(...)
. Python shape inference RegisterShape calls use the C++ shape functions withcommon_shapes.call_cpp_shape_fn
. A future release will removeRegisterShape
from python.
- Documentation now includes operator overloads on Tensor and Variable.
tensorflow.__git_version__
now allows users to identify the version of the code that TensorFlow was compiled with. We also havetensorflow.__git_compiler__
which identifies the compiler used to compile TensorFlow's core.- Improved multi-threaded performance of
batch_matmul
. - LSTMCell, BasicLSTMCell, and MultiRNNCell constructors now default to
state_is_tuple=True
. For a quick fix while transitioning to the new default, simply pass the argumentstate_is_tuple=False
. - DeviceFactory's AddDevices and CreateDevices functions now return a Status instead of void.
- Int32 elements of list(type) arguments are no longer placed in host memory by default. If necessary, a list(type) argument to a kernel can be placed in host memory using a HostMemory annotation.
uniform_unit_scaling_initializer()
no longer takes afull_shape
arg, instead relying on the partition info passed to the initializer function when it's called.- The NodeDef protocol message is now defined in its own file
node_def.proto
instead of graph.proto
. ops.NoGradient
was renamedops.NotDifferentiable
.ops.NoGradient
will be removed soon.dot.h
/ DotGraph was removed (it was an early analysis tool prior to TensorBoard, no longer that useful). It remains in history should someone find the code useful.- re2 / regexp.h was removed from being a public interface of TF. Should users need regular expressions, they should depend on the RE2 library directly rather than via TensorFlow.
This release contains contributions from many people at Google, as well as:
Abid K, @afshinrahimi, @AidanGG, Ajay Rao, Aki Sukegawa, Alex Rothberg, Alexander Rosenberg Johansen, Andrew Gibiansky, Andrew Thomas, @Appleholic, Bastiaan Quast, Ben Dilday, Bofu Chen, Brandon Amos, Bryon Gloden, Cissp®, @chanis, Chenyang Liu, Corey Wharton, Daeyun Shin, Daniel Julius Lasiman, Daniel Waterworth, Danijar Hafner, Darren Garvey, Denis Gorbachev, @DjangoPeng, Egor-Krivov, Elia Palme, Eric Platon, Fabrizio Milo, Gaetan Semet, Georg Nebehay, Gu Wang, Gustav Larsson, @haosdent, Harold Cooper, Hw-Zz, @ichuang, Igor Babuschkin, Igor Macedo Quintanilha, Ilya Edrenkin, @ironhead, Jakub Kolodziejczyk, Jennifer Guo, Jihun Choi, Jonas Rauber, Josh Bleecher Snyder, @jpangburn, Jules Gagnon-Marchand, Karen Brems, @kborer, Kirill Bobyrev, Laurent Mazare, Longqi Yang, Malith Yapa, Maniteja Nandana, Martin Englund, Matthias Winkelmann, @mecab, Mu-Ik Jeon, Nand Dalal, Niels Ole Salscheider, Nikhil Mishra, Park Jiin, Pieter De Rijk, @raix852, Ritwik Gupta, Sahil Sharma, Sangheum Hwang, @SergejsRk, Shinichiro Hamaji, Simon Denel, @Steve, @suiyuan2009, Tiago Jorge, Tijmen Tieleman, @tvn, @tyfkda, Wang Yang, Wei-Ting Kuo, Wenjian Huang, Yan Chen, @YenChenLin, Yuan (Terry) Tang, Yuncheng Li, Yunfeng Wang, Zack Polizzi, @zhongzyd, Ziming Dong, @perhapszzy
We are also grateful to all who filed issues or helped resolve them, asked and answered questions, and were part of inspiring discussions.
- Added support for C++ shape inference
- Added graph-construction C API
- Major revision to the graph-construction C++ API
- Support makefile build for iOS
- Added Mac GPU support
- Full version of TF-Slim available as
tf.contrib.slim
- Added k-Means clustering and WALS matrix factorization
- Allow gradient computation for scalar values.
- Performance improvements for gRPC
- Improved support for fp16
- New high-level ops in tf.contrib.{layers,metrics}
- New features for TensorBoard, such as shape display, exponential smoothing
- Faster and more stable Google Cloud Storage (GCS) filesystem support
- Support for zlib compression and decompression for TFRecordReader and TFRecordWriter
- Support for reading (animated) GIFs
- Improved support for SparseTensor
- Added support for more probability distributions (Dirichlet, Beta, Bernoulli, etc.)
- Added Python interfaces to reset resource containers.
- Many bugfixes and performance improvements
- Many documentation fixes
This release contains contributions from many people at Google, as well as:
Alex Rothberg, Andrew Royer, Austin Marshall, @BlackCoal, Bob Adolf, Brian Diesel, Charles-Emmanuel Dias, @chemelnucfin, Chris Lesniewski, Daeyun Shin, Daniel Rodriguez, Danijar Hafner, Darcy Liu, Kristinn R. Thórisson, Daniel Castro, Dmitry Savintsev, Kashif Rasul, Dylan Paiton, Emmanuel T. Odeke, Ernest Grzybowski, Gavin Sherry, Gideon Dresdner, Gregory King, Harold Cooper, @heinzbeinz, Henry Saputra, Huarong Huo, Huazuo Gao, Igor Babuschkin, Igor Macedo Quintanilha, Ivan Ukhov, James Fysh, Jan Wilken Dörrie, Jihun Choi, Johnny Lim, Jonathan Raiman, Justin Francis, @lilac, Li Yi, Marc Khoury, Marco Marchesi, Max Melnick, Micael Carvalho, @mikowals, Mostafa Gazar, Nico Galoppo, Nishant Agrawal, Petr Janda, Yuncheng Li, @raix852, Robert Rose, @Robin-des-Bois, Rohit Girdhar, Sam Abrahams, satok16, Sergey Kishchenko, Sharkd Tu, @shotat, Siddharth Agrawal, Simon Denel, @sono-bfio, SunYeop Lee, Thijs Vogels, @tobegit3hub, @Undo1, Wang Yang, Wenjian Huang, Yaroslav Bulatov, Yuan Tang, Yunfeng Wang, Ziming Dong
We are also grateful to all who filed issues or helped resolve them, asked and answered questions, and were part of inspiring discussions.
- Python 3.5 support and binaries
- Added iOS support
- Added support for processing on GPUs on MacOS
- Added makefile for better cross-platform build support (C API only)
- fp16 support and improved complex128 support for many ops
- Higher level functionality in contrib.{layers,losses,metrics,learn}
- More features to Tensorboard
- Improved support for string embedding and sparse features
- The RNN api is finally "official" (see, e.g.,
tf.nn.dynamic_rnn
,tf.nn.rnn
, and the classes intf.nn.rnn_cell
). - TensorBoard now has an Audio Dashboard, with associated audio summaries.
- Turned on CuDNN Autotune.
- Added support for using third-party Python optimization algorithms (contrib.opt).
- Google Cloud Storage filesystem support.
- HDF5 support
- Add support for 3d convolutions and pooling.
- Update gRPC release to 0.14.
- Eigen version upgrade.
- Switch to eigen thread pool
tf.nn.moments()
now accepts ashift
argument. Shifting by a good estimate of the mean improves numerical stability. Also changes the behavior of theshift
argument totf.nn.sufficient_statistics()
.- Performance improvements
- Many bugfixes
- Many documentation fixes
- TensorBoard fixes: graphs with only one data point, Nan values, reload button and auto-reload, tooltips in scalar charts, run filtering, stable colors
- Tensorboard graph visualizer now supports run metadata. Clicking on nodes while viewing a stats for a particular run will show runtime statistics, such as memory or compute usage. Unused nodes will be faded out.
This release contains contributions from many people at Google, as well as:
Aaron Schumacher, Aidan Dang, Akihiko ITOH, Aki Sukegawa, Arbit Chen, Aziz Alto, Danijar Hafner, Erik Erwitt, Fabrizio Milo, Felix Maximilian Möller, Henry Saputra, Sung Kim, Igor Babuschkin, Jan Zikes, Jeremy Barnes, Jesper Steen Møller, Johannes Mayer, Justin Harris, Kashif Rasul, Kevin Robinson, Loo Rong Jie, Lucas Moura, Łukasz Bieniasz-Krzywiec, Mario Cho, Maxim Grechkin, Michael Heilman, Mostafa Rahmani, Mourad Mourafiq, @ninotoshi, Orion Reblitz-Richardson, Yuncheng Li, @raoqiyu, Robert DiPietro, Sam Abrahams, Sebastian Raschka, Siddharth Agrawal, @snakecharmer1024, Stephen Roller, Sung Kim, SunYeop Lee, Thijs Vogels, Till Hoffmann, Victor Melo, Ville Kallioniemi, Waleed Abdulla, Wenjian Huang, Yaroslav Bulatov, Yeison Rodriguez, Yuan Tang, Yuxin Wu, @zhongzyd, Ziming Dong, Zohar Jackson
We are also grateful to all who filed issues or helped resolve them, asked and answered questions, and were part of inspiring discussions.
- Added a distributed runtime using GRPC
- Move skflow to
contrib/learn
- Better linear optimizer in
contrib/linear_optimizer
- Random forest implementation in
contrib/tensor_forest
- CTC loss and decoders in
contrib/ctc
- Basic support for
half
data type - Better support for loading user ops (see examples in
contrib/
) - Allow use of (non-blocking) Eigen threadpool with
TENSORFLOW_USE_EIGEN_THREADPOOL
define - Add an extension mechanism for adding network file system support
- TensorBoard displays metadata stats (running time, memory usage and device used) and tensor shapes
- Utility for inspecting checkpoints
- Basic tracing and timeline support
- Allow building against cuDNN 5 (not incl. RNN/LSTM support)
- Added instructions and binaries for ProtoBuf library with fast serialization and without 64MB limit
- Added special functions
bool
-strictness: Tensors have to be explicitly compared toNone
- Shape strictness: all fed values must have a shape that is compatible with the tensor they are replacing
- Exposed
tf.while_loop
(deprecatedcontrol_flow_ops.While
) - run() now takes RunOptions and RunMetadata, which enable timing stats
- Fixed lots of potential overflow problems in op kernels
- Various performance improvements, especially for RNNs and convolutions
- Many bugfixes
- Nightly builds, tutorial tests, many test improvements
- New examples: transfer learning and deepdream ipython notebook
- Added tutorials, many documentation fixes.
This release contains contributions from many people at Google, as well as:
Abhinav Upadhyay, Aggelos Avgerinos, Alan Wu, Alexander G. de G. Matthews, Aleksandr Yahnev, @amchercashin, Andy Kitchen, Aurelien Geron, Awni Hannun, @BanditCat, Bas Veeling, Cameron Chen, @cg31, Cheng-Lung Sung, Christopher Bonnett, Dan Becker, Dan Van Boxel, Daniel Golden, Danijar Hafner, Danny Goodman, Dave Decker, David Dao, David Kretch, Dongjoon Hyun, Dustin Dorroh, @e-lin, Eurico Doirado, Erik Erwitt, Fabrizio Milo, @gaohuazuo, Iblis Lin, Igor Babuschkin, Isaac Hodes, Isaac Turner, Iván Vallés, J Yegerlehner, Jack Zhang, James Wexler, Jan Zikes, Jay Young, Jeff Hodges, @jmtatsch, Johnny Lim, Jonas Meinertz Hansen, Kanit Wongsuphasawat, Kashif Rasul, Ken Shirriff, Kenneth Mitchner, Kenta Yonekura, Konrad Magnusson, Konstantin Lopuhin, @lahwran, @lekaha, @liyongsea, Lucas Adams, @makseq, Mandeep Singh, @manipopopo, Mark Amery, Memo Akten, Michael Heilman, Michael Peteuil, Nathan Daly, Nicolas Fauchereau, @ninotoshi, Olav Nymoen, @panmari, @papelita1234, Pedro Lopes, Pranav Sailesh Mani, RJ Ryan, Rob Culliton, Robert DiPietro, @ronrest, Sam Abrahams, Sarath Shekkizhar, Scott Graham, Sebastian Raschka, Sung Kim, Surya Bhupatiraju, Syed Ahmed, Till Hoffmann, @timsl, @urimend, @vesnica, Vlad Frolov, Vlad Zagorodniy, Wei-Ting Kuo, Wenjian Huang, William Dmitri Breaden Madden, Wladimir Schmidt, Yuan Tang, Yuwen Yan, Yuxin Wu, Yuya Kusakabe, @zhongzyd, @znah.
We are also grateful to all who filed issues or helped resolve them, asked and answered questions, and were part of inspiring discussions.
- Added gfile.Open and gfile.Copy, used by input_data.py.
- Fixed Saver bug when MakeDirs tried to create empty directory.
- GPU Pip wheels are built with cuda 7.5 and cudnn-v4, making them required for the binary releases. Lower versions of cuda/cudnn can be supported by installing from sources and setting the options during ./configure
- Fix dataset encoding example for Python3 (@danijar)
- Fix PIP installation by not packaging protobuf as part of wheel, require protobuf 3.0.0b2.
- Fix Mac pip installation of numpy by requiring pip >= 1.10.1.
- Improvements and fixes to Docker image.
- Allow using any installed Cuda >= 7.0 and cuDNN >= R2, and add support for cuDNN R4
- Added a
contrib/
directory for unsupported or experimental features, including higher levellayers
module - Added an easy way to add and dynamically load user-defined ops
- Built out a good suite of tests, things should break less!
- Added
MetaGraphDef
which makes it easier to save graphs with metadata - Added assignments for "Deep Learning with TensorFlow" udacity course
- Added a versioning framework for
GraphDef
s to ensure compatibility - Enforced Python 3 compatibility
- Internal changes now show up as sensibly separated commits
- Open-sourced the doc generator
- Un-fork Eigen
- Simplified the
BUILD
files and cleaned up C++ headers - TensorFlow can now be used as a submodule in another bazel build
- New ops (e.g.,
*fft
,*_matrix_solve
) - Support for more data types in many ops
- Performance improvements
- Various bugfixes
- Documentation fixes and improvements
AdjustContrast
kernel deprecated, new kernelAdjustContrastv2
takes and outputs float only.adjust_contrast
now takes all data types.adjust_brightness
'sdelta
argument is now always assumed to be in[0,1]
(as is the norm for images in floating point formats), independent of the data type of the input image.- The image processing ops do not take
min
andmax
inputs any more, casting safety is handled bysaturate_cast
, which makes sure over- and underflows are handled before casting to data types with smaller ranges. - For C++ API users:
IsLegacyScalar
andIsLegacyVector
are now gone fromTensorShapeUtils
since TensorFlow is scalar strict within Google (for example, the shape argument totf.reshape
can't be a scalar anymore). The open source release was already scalar strict, so outside GoogleIsScalar
andIsVector
are exact replacements. - The following files are being removed from
tensorflow/core/public/
:env.h
->../platform/env.h
status.h
->../lib/core/status.h
tensor.h
->../framework/tensor.h
tensor_shape.h
->../framework/tensor_shape.h
partial_tensor_shape.h
->../framework/partial_tensor_shape.h
tensorflow_server.h
deleted
- For C++ API users:
TensorShape::ShortDebugString
has been renamed toDebugString
, and the previousDebugString
behavior is gone (it was needlessly verbose and produced a confusing empty string for scalars). GraphOptions.skip_common_subexpression_elimination
has been removed. All graph optimizer options are now specified viaGraphOptions.OptimizerOptions
.ASSERT_OK
/EXPECT_OK
macros conflicted with external projects, so they were renamedTF_ASSERT_OK
,TF_EXPECT_OK
. The existing macros are currently maintained for short-term compatibility but will be removed.- The non-public
nn.rnn
and the variousnn.seq2seq
methods now return just the final state instead of the list of all states. tf.scatter_update
now no longer guarantees that lexicographically largest index be used for update when duplicate entries exist.tf.image.random_crop(image, [height, width])
is nowtf.random_crop(image, [height, width, depth])
, andtf.random_crop
works for any rank (not just 3-D images). The C++RandomCrop
op has been replaced with pure Python.- Renamed
tf.test.GetTempDir
andtf.test.IsBuiltWithCuda
totf.test.get_temp_dir
andtf.test.is_built_with_cuda
for PEP-8 compatibility. parse_example
's interface has changed, the old interface is accessible inlegacy_parse_example
(same for related functions).- New
Variable
s are not added to the same collection several times even if a list with duplicates is passed to the constructor. - The Python API will now properly set the
list
member ofAttrValue
in constructedGraphDef
messages for empty lists. The serialization of some graphs will change, but the change is both forwards and backwards compatible. It will break tests that compare a generatedGraphDef
to a golden serializedGraphDef
(which is discouraged).
This release contains contributions from many people at Google, as well as:
Akiomi Kamakura, Alex Vig, Alexander Rosenberg Johansen, Andre Cruz, Arun Ahuja, Bart Coppens, Bernardo Pires, Carl Vondrick, Cesar Salgado, Chen Yu, Christian Jauvin, Damien Aymeric, Dan Vanderkam, Denny Britz, Dongjoon Hyun, Eren Güven, Erik Erwitt, Fabrizio Milo, G. Hussain Chinoy, Jim Fleming, Joao Felipe Santos, Jonas Meinertz Hansen, Joshi Rekha, Julian Viereck, Keiji Ariyama, Kenton Lee, Krishna Sankar, Kristina Chodorow, Linchao Zhu, Lukas Krecan, Mark Borgerding, Mark Daoust, Moussa Taifi, Nathan Howell, Naveen Sundar Govindarajulu, Nick Sweeting, Niklas Riekenbrauck, Olivier Grisel, Patrick Christ, Povilas Liubauskas, Rainer Wasserfuhr, Romain Thouvenin, Sagan Bolliger, Sam Abrahams, Taehoon Kim, Timothy J Laurent, Vlad Zavidovych, Yangqing Jia, Yi-Lin Juang, Yuxin Wu, Zachary Lipton, Zero Chen, Alan Wu, @brchiu, @emmjaykay, @jalammar, @Mandar-Shinde, @nsipplswezey, @ninotoshi, @panmari, @prolearner and @rizzomichaelg.
We are also grateful to all who filed issues or helped resolve them, asked and answered questions, and were part of inspiring discussions.
-
Python 3.3+ support via changes to python codebase and ability to specify python version via ./configure.
-
Some improvements to GPU performance and memory usage: convnet benchmarks roughly equivalent with native cudnn v2 performance. Improvements mostly due to moving to 32-bit indices, faster shuffling kernels. More improvements to come in later releases.
-
Lots of fixes to documentation and tutorials, many contributed by the public.
-
271 closed issues on github issues.
tf.nn.fixed_unigram_candidate_sampler
changed its default 'distortion' attribute from 0.0 to 1.0. This was a bug in the original release that is now fixed.
Initial release of TensorFlow.