From 280645f360a2b9764f2afa7854d9017dd850d917 Mon Sep 17 00:00:00 2001
From: Peter Fackeldey <peter.fackeldey@rwth-aachen.de>
Date: Fri, 1 Dec 2023 14:09:39 +0100
Subject: [PATCH] 'jax.tree_util' -> 'jtu'

---
 src/dilax/model.py | 30 +++++++++++++++++-------------
 1 file changed, 17 insertions(+), 13 deletions(-)

diff --git a/src/dilax/model.py b/src/dilax/model.py
index 40a214e..3dbdf11 100644
--- a/src/dilax/model.py
+++ b/src/dilax/model.py
@@ -6,6 +6,7 @@
 import equinox as eqx
 import jax
 import jax.numpy as jnp
+import jax.tree_util as jtu
 
 from dilax.parameter import Parameter
 from dilax.util import Sentinel, _NoValue, deep_update
@@ -31,7 +32,7 @@ def add(self, process: str, expectation: jax.Array) -> Result:
         return self
 
     def expectation(self) -> jax.Array:
-        return cast(jax.Array, sum(jax.tree_util.tree_leaves(self.expectations)))
+        return cast(jax.Array, sum(jtu.tree_leaves(self.expectations)))
 
 
 def _is_parameter(leaf: Any) -> bool:
@@ -120,7 +121,7 @@ def __init__(
 
     @property
     def parameter_values(self) -> dict:
-        return jax.tree_util.tree_map(
+        return jtu.tree_map(
             lambda l: l.value,  # noqa: E741
             self.parameters,
             is_leaf=_is_parameter,
@@ -135,7 +136,7 @@ def _constraint(param: Parameter) -> jax.Array:
                 return next(iter(param.constraints)).logpdf(param.value)
             return jnp.array([0.0])
 
-        return jax.tree_util.tree_map(
+        return jtu.tree_map(
             _constraint,
             self.parameters,
             is_leaf=_is_parameter,
@@ -160,9 +161,7 @@ def update(
 
         # patch original parameters with new ones
         _updates = deep_update(
-            jax.tree_util.tree_map(
-                lambda _: None, self.parameters, is_leaf=_is_parameter
-            ),
+            jtu.tree_map(lambda _: None, self.parameters, is_leaf=_is_parameter),
             values,
         )
 
@@ -171,7 +170,7 @@ def _update_params(update: jax.Array | None, param: Parameter) -> Parameter:
                 return param
             return param.update(value=update)
 
-        new_parameters = jax.tree_util.tree_map(
+        new_parameters = jtu.tree_map(
             _update_params,
             _updates,
             self.parameters,
@@ -183,12 +182,17 @@ def _update_params(update: jax.Array | None, param: Parameter) -> Parameter:
         )
 
     def nll_boundary_penalty(self) -> jax.Array:
-        params = jax.tree_util.tree_leaves(self.parameters, is_leaf=_is_parameter)
-
-        return sum(
-            jax.tree_util.tree_map(
-                lambda p: p.boundary_penalty, params, is_leaf=_is_parameter
-            )
+        return cast(
+            jax.Array,
+            sum(
+                jtu.tree_leaves(
+                    jtu.tree_map(
+                        lambda p: p.boundary_penalty,
+                        self.parameters,
+                        is_leaf=_is_parameter,
+                    )
+                )
+            ),
         )
 
     @abc.abstractmethod