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Ariel's's GitHub stats

PhD student at École Polytechnique, working on simulating virtual crowds through Deep Reinforcement Learning. Check out my recent paper! 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, but I'm not ready to make it community-driven just yet. I'm generally not available for internships (unless you're DeepMind or something) before I graduate, which should happend around October 2023. 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.


  1. coltra-rl Public

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

    Python 18 1

  2. openai/gym Public

    A toolkit for developing and comparing reinforcement learning algorithms.

    Python 29.2k 8.1k

  3. CrowdAI Public

    This will be a PhD thesis someday

    C# 2

  4. JavaScript

  5. Gymnasium for multi-agent reinforcement learning

    Python 1.6k 249

  6. A standard API for reinforcement learning and a diverse set of reference environments (formerly Gym)

    Python 539 72

708 contributions in the last year

Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Mon Wed Fri
Activity overview
Contributed to RedTachyon/coltra-rl, RedTachyon/CrowdAI, openai/gym and 46 other repositories

Contribution activity

December 2022

Reviewed 1 pull request in 1 repository
2 contributions in private repositories Dec 1 – Dec 5

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