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redtachyon/README.md

Ariel's's GitHub stats

Research Engineer at Meta. PhD from École Polytechnique, my thesis topic was "Simulating Crowds with Reinforcement Learning". In the past I was at University of Warsaw, KTH Royal Institute of Technology, and Aalto University.

In my free time, I'm the maintainer of Gymnasium (the official continuation of OpenAI Gym), sometimes reviewing other people's bugs, sometimes adding my own bugs... I mean, features. Sometimes I also help with PettingZoo, SuperSuit and other projects in the Farama Foundation.

My two main personal projects are Coltra and CrowdAI, which both form the core of my PhD research. Coltra is a somewhat general DRL library, designed to work seamlessly with multiagent environments and complex observation spaces. CrowdAI is a crowd simulation engine built on top of Unity ML-Agents in which I animate my crowds.

If you're interested in collaborating/hiring me/something of that sort, that might be a bit tricky at the moment. I'm open to contributions to Coltra, and ready to make it more community-driven, after a bit of extra code cleanup. Might be up for some freelancing, consulting and the like. And open-source contributions -- depending on my bandwidth. But if we already talked (e.g. on the RL Discord), chances are, I'll be up to help you with whatever you need.

Erdős number <= 4

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  1. Farama-Foundation/Gymnasium Public

    An API standard for single-agent reinforcement learning environments, with popular reference environments and related utilities (formerly Gym)

    Python 10k 1.1k

  2. coltra-rl Public

    A modular implementation of PPO, and soon hopefully other algorithms.

    Python 26 2

  3. cogment/cogment-lab Public

    A toolkit for practical Human-AI cooperation research

    Python 14 4

  4. Farama-Foundation/PettingZoo Public

    An API standard for multi-agent reinforcement learning environments, with popular reference environments and related utilities

    Python 3.1k 446

  5. openai/gym Public

    A toolkit for developing and comparing reinforcement learning algorithms.

    Python 36.4k 8.7k

  6. CrowdAI Public

    This is the basis of my PhD thesis - not particularly clean or polished

    C# 6 1

1,423 contributions in the last year

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Activity overview

Contributed to pytorch/torchtune, RedTachyon/dotfiles, Farama-Foundation/Gymnasium and 22 other repositories
Loading A graph representing RedTachyon's contributions from August 18, 2024 to August 22, 2025. The contributions are 96% commits, 3% pull requests, 1% code review, 0% issues. 1% Code review   Issues 3% Pull requests 96% Commits

Contribution activity

August 2025

Created 2 commits in 2 repositories
Created 1 repository
8 contributions in private repositories Aug 10 – Aug 20
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