Author: blass uri
Date: 09:03:15 10/19/98
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On October 19, 1998 at 10:14:42, Robert Hyatt wrote: >On October 18, 1998 at 14:25:23, blass uri wrote: > >> >>On October 18, 1998 at 13:41:29, Robert Hyatt wrote: >> >>>On October 18, 1998 at 12:13:34, Alessio Iacovoni wrote: >>> >>>>1) Shouldn't computer strenght it rather be measured on "average" entry-level >>>>computers.. i.e. the ones actually used by the majority of people? >>>> >>>>2) Also.. do programs benefit in the same way from higher speed and increased >>>>hash tables? If not, tests would not be comparable, therefore useless. >>>> >>>>3) Why are books used in tests? Shouldn't a top level computer program be >>>>capable of doing at least decently in the opening phase *without* resorting to >>>>it's book? If the answer is no.. then it could be easily beaten by even >>>>lower-performing computers by having it systematically go out of book. Or am I >>>>wrong? >>> >>>Computers would do just as well without a book as a human that had *never*seen >>>an opening book. And I'd bet the human would fall into many of the same sorts >>>of "traps" that the computer would. But even worse, the computer would tend >>>to play the same opening every time, since the tree search is deterministic. >> >>There are some variable in the evaluation function that you can decide that they >>will not be constants >> >>For example suppose you have a positional bonus for a pawn in the 5th rank of >>0.2 pawn. >>You can decide that the positional bonus will be different(0.23 pawn or 0.17 >>pawn) >>You can decide before every move to change the positional bonuses by a small >>random number and it may cause the program not to play the same opening every >>time. >> >>Uri > > > >Sure... but it can also make it play *weaker* in addition to playing more >random... I do not think that more than 20 elo weaker if you change only by a small number(every positional bonus will not be changed by more than 0.03 pawn). I do not think that the positional bonuses are optimal(I think that noone knows and by doing games you can get get closer to optimal) Another problem is that the optimal bonuses for Blitz may be different from the optimal bonuses for slower time control. I think that for slower time control it may be better to increase the positional bonuses but I am not sure about it. Uri
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