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OpenAI Baselines: high-quality implementations of reinforcement learning algorithms

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Baselines

OpenAI Baselines is a set of high-quality implementations of reinforcement learning algorithms.

These algorithms will make it easier for the research community to replicate, refine, and identify new ideas, and will create good baselines to build research on top of. Our DQN implementation and its variants are roughly on par with the scores in published papers. We expect they will be used as a base around which new ideas can be added, and as a tool for comparing a new approach against existing ones.

Prerequisites

Baselines requires python3 (>=3.5) with the development headers. You'll also need system packages CMake, OpenMPI and zlib. Those can be installed as follows

Ubuntu

sudo apt-get update && sudo apt-get install cmake libopenmpi-dev python3-dev zlib1g-dev

Mac OS X

Installation of system packages on Mac requires Homebrew. With Homebrew installed, run the follwing:

brew install cmake openmpi

Virtual environment

From the general python package sanity perspective, it is a good idea to use virtual environments (virtualenvs) to make sure packages from different projects do not interfere with each other. You can install virtualenv (which is itself a pip package) via

pip install virtualenv

Virtualenvs are essentially folders that have copies of python executable and all python packages. To create a virtualenv called venv with python3, one runs

virtualenv /path/to/venv --python=python3

To activate a virtualenv:

. /path/to/venv/bin/activate

More thorough tutorial on virtualenvs and options can be found here

Installation

Clone the repo and cd into it:

git clone https://github.com/openai/baselines.git
cd baselines

If using virtualenv, create a new virtualenv and activate it

    virtualenv env --python=python3
    . env/bin/activate

Install baselines package

pip install -e .

MuJoCo

Some of the baselines examples use MuJoCo (multi-joint dynamics in contact) physics simulator, which is proprietary and requires binaries and a license (temporary 30-day license can be obtained from www.mujoco.org). Instructions on setting up MuJoCo can be found here

Testing the installation

All unit tests in baselines can be run using pytest runner:

pip install pytest
pytest

Subpackages

To cite this repository in publications:

@misc{baselines,
  author = {Dhariwal, Prafulla and Hesse, Christopher and Klimov, Oleg and Nichol, Alex and Plappert, Matthias and Radford, Alec and Schulman, John and Sidor, Szymon and Wu, Yuhuai},
  title = {OpenAI Baselines},
  year = {2017},
  publisher = {GitHub},
  journal = {GitHub repository},
  howpublished = {\url{https://github.com/openai/baselines}},
}

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