Author: Peter Fendrich
Date: 16:09:28 06/02/04
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On June 02, 2004 at 19:04:15, Peter Fendrich wrote: >On June 02, 2004 at 17:16:15, Dan Wulff wrote: > >>Hi! >> >>I've been thinking about using performance rating to select moves for Gandalf's >>opening book, but I cannot seem to find the correct way to calculate the >>performance rating od a given move. >> >>Say a 2600 player wins a game against an 2500 opponent, starting with 1. e4, >>what would the performance rating be after that ?? >> >>I've been looking at the ratings in the CB GUI, but sometimees, when only one >>game has been played, the Performance is over 3200, which I cannot seem to fit >>into the ELO rating formula, where the highest possible gain/loss for a single >>game is 16 ELO points. >> >>Am I going about this in a completely wrong manner, or does performance rating >>have nothing whatsoever to do with ELO rating ?? >> >>Greetings >> >>Dan Wulff >>(The Gandalf Team) > >Hi Dan, >forget about performance rating (and your statement about 16 points is wrong...) > >You can absolutely use the rating difference as a way to set weights to opening >moves. The rating difference is equal to an expected wining % and that can be >translated to what one win/draw/loss is worth in ELO points in the long run. >As you are Danish you will probably understand this table: >http://hem.passagen.se/wirsbo/lask.html >The rating diff translates to ELO points that you can add into your book. >/Peter just to clarify: In your example the rating diff is 100 ELO and in the table you will find win=12, draw=-4, loss=-20 for the winner and 20, 4, -12 for the loser. /Peter
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