Author: Vincent Lejeune
Date: 20:21:15 01/01/00
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On January 01, 2000 at 12:58:24, Len Eisner wrote: >On January 01, 2000 at 10:20:48, James T. Walker wrote: > >>Hello Uri, >>You may be right. I assume you think that a doubling of speed is worth LESS than >>60 points. You must also consider that if you are right then a processor >>running at 1/2 speed does not lose 60 points either. Are you so sure about >>that?? Doubling speed gives the program 2 times as much information and vs >>computers it is easy to prove that the gain is very close to the 60 points most >>people accept. > >*snip* > >Larry Kaufman wrote an interesting article several years ago comparing the >effects of increased speed vs. increased time. He concluded an increase in >program speed was worth more than an increase in thinking time assuming the >human’s time does not vary. > >This is difficult to explain so let me give an example. > >First Game >Fritz 6 PII 400 >Human: 60 seconds a move >Fritz: 30 seconds a move > >Second Game >Fritz 6 PII 200 >Human: 60 seconds per move >Fritz: 60 seconds per move > >You would think Fritz would play equally well in both games but that’s >incorrect. In game one, Fritz would be stronger because of the effects of the >permanent brain. If you assume Fritz guesses you move 1/3 of the time, then the >value of the permanent brain is (1/3 X 60 seconds) = 20 seconds per move over >the course of the entire game. > >So for game one the total time per move for Fritz including the permanent brain >is 20 + 30 = 50 seconds. In game two the total time would be 20 + 60 = 80 >seconds per move. So Fritz is stroger in game one because 50 seconds per move on We can had that human have less time to : look at the position and relax a bit when it's up the computer to play ... >a PII 400 is better than 80 seconds per move on a PII 200. > >Len
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