Using Stable-Baselines3 at Hugging Face

stable-baselines3 is a set of reliable implementations of reinforcement learning algorithms in PyTorch.

Exploring Stable-Baselines3 in the Hub

You can find Stable-Baselines3 models by filtering at the left of the models page.

All models on the Hub come up with useful features:

1. An automatically generated model card with a description, a training configuration, and more.
2. Metadata tags that help for discoverability.
3. Evaluation results to compare with other models.
4. A video widget where you can watch your agent performing.

Install the library

To install the stable-baselines3 library, you need to install two packages:

• stable-baselines3: Stable-Baselines3 library.
• huggingface-sb3: additional code to load and upload Stable-baselines3 models from the Hub.

pip install stable-baselines3
pip install huggingface-sb3

Using existing models

You can simply download a model from the Hub using the load_from_hub function

checkpoint = load_from_hub(
    repo_id="sb3/demo-hf-CartPole-v1",
    filename="ppo-CartPole-v1.zip",
)

You need to define two parameters:

• --repo-id: the name of the Hugging Face repo you want to download.
• --filename: the file you want to download.

Sharing your models

You can easily upload your models using two different functions:

1. package_to_hub(): save the model, evaluate it, generate a model card and record a replay video of your agent before pushing the complete repo to the Hub.

package_to_hub(model=model, 
               model_name="ppo-LunarLander-v2",
               model_architecture="PPO",
               env_id=env_id,
               eval_env=eval_env,
               repo_id="ThomasSimonini/ppo-LunarLander-v2",
               commit_message="Test commit")

You need to define seven parameters:

• --model: your trained model.
• --model_architecture: name of the architecture of your model (DQN, PPO, A2C, SAC…).
• --env_id: name of the environment.
• --eval_env: environment used to evaluate the agent.
• --repo-id: the name of the Hugging Face repo you want to create or update. It’s <your huggingface username>/<the repo name>.
• --commit-message.
• --filename: the file you want to push to the Hub.

2. push_to_hub(): simply push a file to the Hub

push_to_hub(
    repo_id="ThomasSimonini/ppo-LunarLander-v2",
    filename="ppo-LunarLander-v2.zip",
    commit_message="Added LunarLander-v2 model trained with PPO",
)

You need to define three parameters:

• --repo-id: the name of the Hugging Face repo you want to create or update. It’s <your huggingface username>/<the repo name>.
• --filename: the file you want to push to the Hub.
• --commit-message.

Additional resources

• Hugging Face Stable-Baselines3 documentation
• Stable-Baselines3 documentation