You can help create Elo ratings as follows:
git clone https://github.com/microprediction/precise.git
cd precise
pip install -e .
python3 precise/skatervaluation/battlescripts/manager_var/stocks\?topic=stocks\&n_dim=int:500\&n_obs=int:225\&n_burn=int:200\&k=int:5.py
This should start to populate a new file which you can PR. It will go in here