Sample Code for "Pessimism Meets Invariance: Provably Efficient Offline Mean-Field Multi-Agent RL"

Overview

Sample Code for "Pessimism Meets Invariance: Provably Efficient Offline Mean-Field Multi-Agent RL"

This is the official codebase for Pessimism Meets Invariance: Provably Efficient Offline Mean-Field Multi-Agent RL. Here, we provide a sample implementation of SAFARI on the cooperative navigation environment. This specific repository is untested; however, many of the given files match the code used to run experiments in the paper exactly. Refer to agents/safari.py.

Requirements

To install requirements, run:

pip install -r requirements.txt

Not all dependencies may be used; however, all dependencies that are needed can be found here.

Run

To kick off a training run of SAFARI, add a dataset into the data/ folder. Then running:

python main.py safari

will start the script from the entry point, main.py.

Data Format

SAFARI expects there to be a dataset present at data/ / for each parallel seed that is run. We expect three files:

  1. actions.txt (Shape: [N, H])
  2. rewards.txt (Shape: [N, H])
  3. obs.txt (Shape: [N, H, O])

each of which expects each line to be an episodic trajectory. We convert each buffer into a list (1), cast them to str (2), and print them on separate lines of the file (3).

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