Author: blass uri
Date: 05:46:28 10/08/98
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On October 08, 1998 at 08:21:56, Robert Hyatt wrote: >On October 08, 1998 at 04:45:16, blass uri wrote: > >>I think that it is a good idea to have a not symmetric evaluation function. >> >>for example if a program is bad at rook endings it should be against going to it >>with both sides, but the evaluation should be more symmetric when the time >>control is longer because in this case the program has better chances to find by >>search the right moves in positions that it does not understand. >> >>Is there a chess program that uses an evaluation function that is a function of >>the time control? >> >>Uri > >many programs start out like this, but as the evaluation is improved, it is >"turned off". I can't think of anything asymmetric in my evaluation at >present, other than one penalty for completely blocked pawns... I think that it may be a better idea to reduce the panalty for longer time control I remember that in the rook ending when crafty needs tablebases not to play Rxb2 the evaluation of crafty15.20 after search was not symmetric with black it was -2.xx and with white after a sensible move it was only 1.xx There were no blocked pawns in this endgame. Uri
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