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# NeurIPS 2020 Flatland Challenge baselines

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📈 [**Results**](https://app.wandb.ai/masterscrat/flatland/reports/Flatland-Baselines--Vmlldzo4OTc5NA) 
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Experiments
---

Experiments consist of one or many RLlib YAML config files alongside a MARKDOWN file containing results, plots and a detailed description of the methodology.

All files are stored in a experiment folder under `experiments/<env-name>/<experiment-name>`.

- [Tree observations w/ fully connected network](experiments/flatland_random_sparse_small/tree_obs_fc_net)
- [Global observations w/ convnet](experiments/flatland_random_sparse_small/global_obs_conv_net)

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Setup
---
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Tested with Python 3.6 and 3.7

```
conda create --name ray-env python=3.7 --yes
```

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You may need to install/update bazel: [Ubuntu guide](https://docs.bazel.build/versions/master/install-ubuntu.html)
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```
pip install ray[rllib]
pip install tensorflow # or tensorflow-gpu
pip install -r requirements.txt
```

## Usage
Training example:
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`python ./train.py -f experiments/flatland_random_sparse_small/global_obs_conv_net/ppo.yaml`
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Test example:
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`python ./rollout.py /tmp/ray/checkpoint_dir/checkpoint-0 --run PPO --no-render
        --config '{"env_config": {"test": true}}' --episodes 1000 --out rollouts.pkl`
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Note that -f overrides all other trial-specific command-line options.

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Notes
---
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- The basic structure of this repository is adopted from [https://github.com/spMohanty/rl-experiments/](https://github.com/spMohanty/rl-experiments/)