Author: Peter Fendrich
Date: 12:44:24 11/04/02
Go up one level in this thread
On November 04, 2002 at 14:29:30, Sedat wrote: >thanks in forwards When computing these rating you can use a method that is not possible for humans. In this case, each time you generate the ratings, you can use the complete set of games played sofar. All that counts are the differences between all the engines so you can start with whatever rating you want. Let's start with for instance 2300 for all the engines to prevent ratings below zero. The iterative formula will eventually give new ratings mirroring the rating differences and according to your starting value. A player that got 2310 would get 2210 if you had started with 2200 instead. The next step SSDF does, is to adjust the level of all the ratings up or down, some amount of ratingpoints. This is done using games vs rated humans so the average level will be according to these results. The last step is done just to get something fairly comparable to human rating levels. But never forget that the SSDF ratings are not the same as the humans even if the adjustment step gives some feeling of what the real strength level is compared to humans. Regards, Peter
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