Knowledge

This page provide links to resources that explain aspects of the statistical models we use for climbing analytics.

Check out our page describing the Bradley-Terry model, the core of automatic grading algorithms:

• Bradley-Terry Model
• Converting Bradley-Terry model parameters to Elo ratings

Also check out our paper on applying the dynamic Bradley-Terry model to estimate the slope of the climbing grade scale. This answers the question: How hard is the next grade?

• Bayesian estimation of the climbing grade scale