DeepDip

DeepDip is an agent designed to play no-press Diplomacy using Deep Reinforcement Learning to decide its Orders.

gym-diplomacy

This repository offers a new OpenAI Gym environment to play no-press Diplomacy.

• It uses the BANDANA framework to set up the rules of the game.
• It uses the architecture of OpenAI Gym to make it standard and easily recognizable to any developer.
• It is compatible with the existing agents from Baselines.

Variants

This environment provides three different variants.

• Standard - the original Diplomacy map for seven players.
• Three - a three-player variant to study how the agent behaves in a multiplayer game.
• Small - a two-player variant to understand how the environment works and study the performance of the agent.

Setup

Dependencies

Java JDK, Python 2, Python 3, Pipenv.

Setup Parlance

Parlance, the BANDANA's game engine, is written in Python 2. The repository provides a custom version of Parlance that has additional variants. The following script install Parlance using the version provided in this repository.

pip2 install -e parlance

Setup BANDANA

BANDANA is written in Java. As such, its agents and game engine need to be compiled using Java JDK. It is also recommended to use Maven to compile using the provided bandana/pom.xml file. Using the following command will compile the Java files.

mvn -f bandana clean install

Setup Python packages

This project uses Pipenv to manage its Python 3 packages. First, setup the new Gym environment by adding gym-diplomacy to Baselines setup using the following script.

echo 'import gym-diplomacy\n' > temp__init__.py
cat __init__.py >> temp__init__.py
mv temp__init__.py __init__.py

To install all the necessary packages, you need to set up properly Pipenv and run the following command to install the packages of Pipfile.

pipenv install

Setup Protobuf

Protobuf establishes the communication between BANDANA's Java and Gym's Python. You can set it up using the following script.

cd protobuf
make
cd ..

Usage

Run the agent

The following script will start the training process of the agent.

cd deepdip
pipenv run python deepdip_stable-baselines.py

It will create a deepdip-results folder.

• In pickles, it will store the most recent and the best model.
• The other folders with the name of the algorithm (PPO2) will store the TensorBoard files.
• The monitor.csv files are the records of the training process of the Gym environment.

DeepDip uses the most recent model to train, and the best model to evaluate itself. The trained model can be used by changing the deepdip-results folder to one of the provided.

At the end of the deepdip_stable-baselines.py script, it is generated a graph with the evolution of the rewards.

Choose Variant Map

The code is using the Three variant by default.

To change the variant in use, two alterations on the code must be done.

1. On the Java, in the file TournamentRunner.java, change the variable GAME_MAP to 'standard', or 'small', or 'three'.
2. On the Python, in the file diplomacy_strategy_env.py, change the variable CURRENT_MAP to 'standard', or 'small', or 'three', or to the desired position of the variable MAPS.

After these changes, rerun Maven to apply the alterations.

Citation

This work was my Master Thesis.

To cite this work in publications:

@article{cruz_strategicdiplomacy_2019,
    author = {Cruz, Diogo and {Lopes Cardoso}, Henrique},
    title = {{{Deep Reinforcement Learning}} in {{Strategic Multi-Agent Games}}: the case of No-Press {{Diplomacy}}},
    shorttitle = {{{Deep Reinforcement Learning}} in {{Strategic Multi-Agent Games}}},
    month = jul,
    year = {2019},
    copyright = {openAccess}
}