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Subject: Re: Fritz won shredder,Century won Boris kogen(2286) in the israeli league

Author: Ralph Queck

Date: 17:21:07 04/07/00

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On April 02, 2000 at 18:24:06, Ed Schröder wrote:

>On April 02, 2000 at 16:33:24, blass uri wrote:
>
>>On April 02, 2000 at 15:46:54, Dave Gomboc wrote:
>>
>>>It sounds like your tunable policy paid off, in terms of people discovering good
>>>adjusted parameters?
>>>
>>>Dave
>>
>>Chess knowledge=25 is not an idea of me.
>>
>>I suggested to use it only after I read in Ed's site that Ed found that it is an
>>improvement against computers and maybe also an improvement against humans.
>>
>>I found also (after I read that Ed found that knowledge=25 is an improvement)
>>that Rebel(knowledge=0) does not lose in a result of almost 60:0 against
>>Rebel(chess knowledge=500) at 7 plied depth and it convinced me that Rebel knows
>>some important things even with knowledge=0.
>>
>>I think that the numbers of the chess knowledge parameter were misleading and
>>the minimal number should be clearly bigger than 0.
>>
>>I believe that this is the reason that people did not try to reduce the chess
>>knowledge parameter in the Rebel century personality contest.
>>
>>Uri
>
>I also did not expect it either that lowering the Chess Knowledge parameter
>would make Rebel stronger. In my tests I always increased the value of
>the Chess Knowledge parameter. When I did a test with [Chess Knowledge=25]
>(it was just curiosity) I was surprised to see the enormous speed gain of
>the search. Then [Chess Knowledge=25] suddenly had my full attention.
>
>So the improvement was discovered by accident. No real surprise as most
>of the time it goes that way. Chess remains a mystery, it is like a maze
>of 2^64 entries and no exit.
>
>Ed



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