Author: Robert Hyatt
Date: 11:25:10 06/13/01
Go up one level in this thread
On June 13, 2001 at 07:04:07, Ulrich Tuerke wrote: > >The opposite is true. When 2 payers with a huge difference in ELO play, the >stronger player can only loose ELO points. In case he gets 100%, his rating >remains constant, otherwise it goes down. > >Uli > That is wrong. Either (a) you are using a TPR rating estimator like new = old + diff*400*(win-lose)/N That does limit you to 400 points difference, max. or (b) you are looking at the chess servers, which use integer math to compute ratings. That also gives you a bounded upper rating as soon as the rate of change drops below 1.0 it becomes 0. But Elo's formula has no such limit. I can be rated 4000 and you can be rated 1, and I will _still_ see my rating go up a small fraction of a full point.
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