Author: Tom King
Date: 12:32:02 08/17/99
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On August 17, 1999 at 02:51:41, Frank Schneider wrote: >On August 16, 1999 at 19:45:32, Bruce Moreland wrote: > >> >>On August 16, 1999 at 16:32:45, Thorsten Czub wrote: >> >>>Question to the programmer (s) [of anmon]: >>>The evaluation in anmon is very strange. it does not jump. >>>it scrolls or stretches not in intervall-jumps but nearly fluently >>>up and down. >>> >>>Uli Tuerke thought that this could be because anmon uses no alpha-beta >>>but an algorithm used in cilk-chess. >I think the algorithm is called MTD(f). It is a kind of alpha-beta, where >always alpha == beta-1. To establish the real score of a move you do a >kind of binary search for the score, using null-window-searches. > >But I don't know if AnMon uses MTD(f). > >>>I have no idea which algorithm this is, but would like to know about >>>the stuff. >>>Can we maybe discuss about it ? Or when this is a secret information >>>maybe talk about this algorithm in general no matter if it used or not. >> >>One of the programs mine played against in Paderborn did this too, I think it >>was Gromit but perhaps it was Francesca or maybe I am completely wrong. >It wasn't Gromit and probably not Francesca. > No, it wasn't Francesca. I use standard aspiration alpha-beta. Here's question, would PVS buy me a speedup, and if so how much? My guess: a couple of % Rgds, Tom >Frank > >> >>bruce
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