The glicko formulas have a variable called RD, which stands for rating deviation. It is supposed to go down as you play games, and go up over time when you do not play.
Can someone verify that your RD goes up over time on lichess? It doesn't appear to, but I don't know for sure and don't know how to find out. It would seem that the entire concept of the glicko rating system would be defeated by a broken implementation of RD, so it seems rather important.
Lichess uses Glicko-2, it is a different system that doesn't look at the time, but instead tries to find inconsistency in results via complex formulae of volatility change, and pushes RD up if found. See http://www.glicko.net/glicko/glicko2.pdf Chess.com uses classic Glicko, however. It is hard to say which of these systems has more predictive power with respect to the game of chess - I'm not aware of any research on this.
Btw, your rating deviation can be found in the stats of the corresponding variant, for example here: https://lichess.org/@/Gorgonian/perf/correspondence
I guess I just misunderstood how glicko-2 works. Thanks for the reply.
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