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Subject: Re: SSDF and question for Tony

Author: Harald Faber

Date: 05:22:08 07/24/01

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On July 24, 2001 at 07:48:06, Tony Hedlund wrote:

>On July 24, 2001 at 05:17:48, Harald Faber wrote:
>
>>
>>For Tony: Do you reset the weights in the opening book before you start new
>>matches or do you take over the learned move preferences from former matches?
>
>I don't reset the opening book.


Aha! This is one of the most important statements I have read since months.


>But for the matches I now play it doesn't matter. In the first match, Deep Fritz
>- Tiger 14 CB  20-20, DP was on my "left computer". In the present match,
>Gambit Tiger 2 CP - Deep Fritz 18-21(so far), DP is on my "right computer". So
>Deep Fritz didn't learn anything from Tiger 14 CB. But in the next match, Gambit
>Tiger 2 CP - Tiger 14 CB, both programs have had the possibility to learn from
>Deep Fritz.


It is not only that DeepFritz cannot have learned from Tiger 14 to use it for
the current match, but DeepFritz *already* has learned from former opponents. So
if you play DeepFritz (or any other program) which has learned from say 100
games, versus a new entry, the new program definitely has a disadvantage because
it has no learned values.


>So in that sence we honours the best learner, which probably also is
>the best program.


Uhh, IMO this is nonsense. Oh, sorry, yes, it is the best *program*, but not the
strongest *engine*. I don't deny that learning also counts to a program like the
opening book, but at the moment I see a much too high value for effective
bookleraning. One might fear that in near future several programmers will
concentrate on *very* effective booklearning (Hi Christophe, how far is yours?)
instead of improving the engine. Please prove me wrong...


>Tony



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