Author: Peter Fendrich
Date: 10:21:21 12/08/00
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On December 08, 2000 at 13:06:43, Robert Hyatt wrote: >On December 08, 2000 at 12:56:09, Peter Fendrich wrote: > >>I looking for a measurement for move generation performance. >> >>Do you think FH/CountNodes, where FH is number of times the first generated move >>was a Fail High, is a good measurement? >>Do you have some other? >>What's your figures? >>I get some 50% and I have a feeling it's to low. >> >>//Peter > > >The critical statistic I measure in crafty is this: "For any position where >I 'fail high' (return a score >= beta) what percentage of the time does it >happen on the _first_ move?" I generally average 92%. Anything over 90% is >reasonable. Anything less means move ordering needs work. OK, it seems logical. I have in princple 3 types of FH: 1) Hash table (without moving) 2) Null Move 3) Ordinary moves (including the hash table move) Do you include all these cases? With only the third case counted I'm well over 90% //Peter
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