The SCBA Ratings page is live!
Thus far, only matchpoint pairs games are rated, from 2023 onwards. Most of the development was done in a week with the help of ChatGPT and Claude.
Why 2023?
Given that SCBA re-opened in May 2022 after COVID-19 restrictions were eased, 2023 seems like a good starting point when most people returned to weekly games.
How is this done?
Ratings are implemented using OpenSkill, using Plackett-Luce based on rankings.
What about teams?
In the process of implementation, most likely using Glicko-2 (see previous post) on head to head matches with weighting for number of boards.