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ml-agents
The Unity Machine Learning Agents Toolkit (ML-Agents) is an open-source project that enables games and simulations to serve as environments for training intelligent agents using deep reinforcement learning and imitation learning.
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The Unity Machine Learning Agents Toolkit (ML-Agents) is an open-source project that enables games and simulations to serve as environments for training intelligent agents. We provide implementations (based on PyTorch) of state-of-the-art algorithms to enable game developers and hobbyists to easily train intelligent agents for 2D, 3D and VR/AR games. Researchers can also use the provided simple-to-use Python API to train Agents using reinforcement learning, imitation learning, neuroevolution, or any other methods. These trained agents can be used for multiple purposes, including controlling NPC behavior (in a variety of settings such as multi-agent and adversarial), automated testing of game builds and evaluating different game design decisions pre-release. The ML-Agents Toolkit is mutually beneficial for both game developers and AI researchers as it provides a central platform where advances in AI can be evaluated on Unity’s rich environments and then made accessible to the wider research and game developer communities.
Support for multiple environment configurations and training scenarios
Flexible Unity SDK that can be integrated into your game or custom Unity scene
Support for training single-agent, multi-agent cooperative, and multi-agent competitive scenarios via several Deep Reinforcement Learning algorithms (PPO, SAC, MA-POCA, self-play).
Support for learning from demonstrations through two Imitation Learning algorithms (BC and GAIL).
Wrap Unity learning environments as a gym environment
Wrap Unity learning environments as a PettingZoo environment
Releases & Documentation
⚠️ Documentation Migration Notice
We have moved to Unity Package documentation as the primary developer documentation and have deprecated the maintenance of web docs. Please use the Unity Package documentation for the most up-to-date information.
The table below shows our latest release, including our develop branch which is under active development and may be unstable. A few helpful guidelines:
The Versioning page overviews how we manage our GitHub releases and the versioning process for each of the ML-Agents components.
The Releases page contains details of the changes between releases.
The Migration page contains details on how to upgrade from earlier releases of the ML-Agents Toolkit.
The com.unity.ml-agents package is verified for Unity 2020.1 and later. Verified packages releases are numbered 1.0.x.
If you use Unity or the ML-Agents Toolkit to conduct research, we ask that you cite the following paper as a reference:
@article{juliani2020,
title={Unity: A general platform for intelligent agents},
author={Juliani, Arthur and Berges, Vincent-Pierre and Teng, Ervin and Cohen, Andrew and Harper, Jonathan and Elion, Chris and Goy, Chris and Gao, Yuan and Henry, Hunter and Mattar, Marwan and Lange, Danny},
journal={arXiv preprint arXiv:1809.02627},
url={https://arxiv.org/pdf/1809.02627.pdf},
year={2020}
}
Additionally, if you use the MA-POCA trainer in your research, we ask that you cite the following paper as a reference:
@article{cohen2022,
title={On the Use and Misuse of Absorbing States in Multi-agent Reinforcement Learning},
author={Cohen, Andrew and Teng, Ervin and Berges, Vincent-Pierre and Dong, Ruo-Ping and Henry, Hunter and Mattar, Marwan and Zook, Alexander and Ganguly, Sujoy},
journal={RL in Games Workshop AAAI 2022},
url={http://aaai-rlg.mlanctot.info/papers/AAAI22-RLG_paper_32.pdf},
year={2022}
}
The ML-Agents Toolkit is an open-source project and we encourage and welcome contributions. If you wish to contribute, be sure to review our contribution guidelines and code of conduct.
For problems with the installation and setup of the ML-Agents Toolkit, or discussions about how to best setup or train your agents, please create a new thread on the Unity ML-Agents discussion forum. Be sure to include as many details as possible to help others assist you effectively. If you run into any other problems using the ML-Agents Toolkit or have a specific feature request, please submit a GitHub issue.
Please tell us which samples you would like to see shipped with the ML-Agents Unity package by replying to this discussion thread.
Privacy
In order to improve the developer experience for Unity ML-Agents Toolkit, we have added in-editor analytics. Please refer to "Information that is passively collected by Unity" in the Unity Privacy Policy.
