Author: Chessfun
Date: 12:43:37 11/18/05
Go up one level in this thread
On November 18, 2005 at 15:34:10, James T. Walker wrote: >On November 18, 2005 at 11:11:28, Chessfun wrote: > >>On November 18, 2005 at 09:55:08, James T. Walker wrote: >> >>>I followed your link and I'm wondering why Fritz 9 has an average opponent >>>rating almost 100 Elo below Fruit 2.2.1. I find it strange that all testers >>>would want to test the new engine against weak opponents first when most >>>interesting would be vs top opponents. >>>Jim >> >>Jim, >> While Fritz 9 has played all the top opponents excluding Fruit 2.2.1 >>currently Fruit 2.2.1 has not played many of the weaker engines. >> >>A goal is of course to bring the average opponent rating inline but that also >>includes trying to get each and every engine to at least 2000 games. >> >>Fritz 9 currently also has only played some 700 odd games and it's average >>opponent rating needs to be higher while Fruit 2.2.1 needs to be lower. >> >>For some testers playing against weaker engines is something they enjoy and it >>must be remembered that not all testers own all engine versions. >> >>Sarah. > >Hello Sarah, >Your post seems contradictory. If Fritz 9 has played all the top opponents then >it's average opponent rating would be the highest possible. After that it's >opponents average rating can only go down as it's pitted against weaker >opponents. >Jim No, it naturally depends on the rating of all it's opponents and the number of games played against each. In Fritz's case it has played a lot of lower rated opponents as well as high and by playing the lower rated it causes it's opponent average to fall. While Fruit 2.2.1 hasn't played against many of the weaker engines and therefore it's opponent average remains high. Sarah.
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