Computer Chess Club Archives


Search

Terms

Messages

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

Author: Ed Schröder

Date: 15:24:06 04/02/00

Go up one level in this thread


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



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.