Rating formula (yet another post like that...)

[Counting_Zenist]

If you want the implementation breakdown probably just refer the original post by Anoek. It had some updates over the years, but the idea and parameters basically remain the same (mostly just variables tuned to different values). The most important parameters and variables are as followed.

@anoek

The Glicko-2 system has several parameters that can be adjusted: the initial rating, initial deviation, initial volatility, the number of games considered at one time, and frequency of deviation updates due to player inactivity.