2016 Pre-Champs ELO Ratings

[wjordan]

Originally Posted by Richard Wallace

One source of error in this system arises because non-district teams play fewer qualifying matches than district teams. More capable teams, such as 16, 254, 330, 971, 2481, etc. would need a few more matches for their Elo ratings to converge from the initial seed (1500) toward a figure that better represents their performance.

This is a major flaw to the Elo system (at least when applied to FRC), and it's (as well as general normalizing between events) been something I've been trying to figure out for awhile. I was thinking about doing a straightforward multiplier to amount of Elo added for each match depending on the type of the event (i.e. District Qualifiers would add half as much Elo per match as a regional / DCMP would), but that would still massively favor teams that go to 3 regionals or 3+ district events. I also thought about normalizing the amount of Elo added per match by how many matches the team has played previously, but that would then disproportionately favor the teams that go to a single 8-play regional.