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Subject: Re: F7 no learning - how weird

Author: Mogens Larsen

Date: 09:30:46 01/26/02

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On January 26, 2002 at 12:17:18, karen Dall Lynn wrote:

>Hello
>
>Yes! I saw the learning after some rated games!
>
>However I still have some doubts.
>
>1) It seems that F7 does not learn my openings in white; I am not sure, but I
>moved g3 - which is 0 weighed defaut - three times, I lost of course, and G3 got
>no new value number. However every time Fritz play white, tabulation occurs to
>the first move (in rated games).

Why would Fritz assess g3 differently when you lose with this move? I assume
that Fritz changes the evaluation of the responses to that move. The learning
only affects Fritz's moves, ie. a poor result (a loss against you for example)
after 1.g3 d5 means that the value of d5 is reduced and e5 might be tried the
next time you play g3. If Fritz plays white and wins or loses with 1.e4 then the
weights will change for that move, but not the weights for your response.

In engine-engine matches where two engines use the same book, both engines
learn. So the weights of all the moves are changed. That's why it might be a
good idea to have separate books for both engines.

Regards,
Mogens



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