Author: Willie Wood
Date: 12:13:18 12/18/97
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On December 18, 1997 at 07:02:57, Roland Pfister wrote: >In the development/debug version of my program Patzer I have built in >some statistics about cutoffs. I ran it on the Bratko-Kopec test >with search depth 8. Here some results of the cutoff efficiency of move >types: > >BK null hash capt kil1 kil2 misc > 2: 67 60 46 31 13 0 > 3: 79 61 35 45 12 0 > 4: 87 64 41 38 11 1 > 5: 76 62 44 25 10 0 > 6: 74 69 63 30 6 0 > 7: 78 61 39 36 13 0 > 8: 72 55 48 45 13 0 > 9: 79 63 40 24 9 0 >10: 80 60 45 34 18 0 >11: 75 68 45 28 9 0 >12: 72 66 48 40 18 0 > >that means e.g. in Bratko-Kopec #12 72% of all null moves produced >a cutoff, 66% of all hashmoves produced a cutoff etc. > >the statistics was done in the normal search not quiescense and my >move ordering/generation is from left to right ( nullmove first, >hash move, good captures, first killer, second killer, up to 5 >history moves, rest ). > >Has anyone else statistics about cutoffs or will produce them? That's pretty interesting. Can you tell me what's the difference bewteen killer 1 and 2, and do you allow captures in the killers? WW
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