Author: William Bryant
Date: 16:58:32 12/30/00
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On December 30, 2000 at 16:26:30, Scott Gasch wrote: My numbers are similar, averaging about 85% ranging from 79% to 95% depending upon the position. Bob quotes Crafty as approx. 92%. I could easily believe that my move ordering could be tweeked a bit. William wbryant@ix.netcom.com >Hi, > >I remember a while back Bob said a good statistic to measure move ordering by >was the percentage of beta cutoffs that occur on the first move tried in a >position. I'm looking for bugs / ways to improve my code by instrumenting it >with a lot of counters and dumping statictics at the end of a move... I recently >added this metric and ended up with a rate lower than I had expected. > >In typical positions the rate is about 80%..85%. Only in positions where there >is a winning tactical move or a piece threatoned does the rate exceed 90%. >Despite this I think my tree size is fairly good and move ordering is fairly >standard. Does anyone else measure this statistic and, if so, what are your >results? > >Thanks in advance, >Scott
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