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Subject: Re: Shredder learning must be better than Fruit 2.2.....................

Author: Ryan B.

Date: 19:03:47 10/20/05

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On October 20, 2005 at 21:16:11, Thomas Logan wrote:

>On October 20, 2005 at 20:37:45, Jorge Pichard wrote:
>
>>On October 20, 2005 at 19:34:51, Thomas Logan wrote:
>>
>>Shredder learning must be better than Fruit 2.2, and after 75 games Shredder
>>should be ahead  :-)
>
>Yes that is a possibility though I am not sure and tend to doubt it but
>
>How would you check it ?
>
>Other than running another match of equal duration
>
>Fruit appears to have been helped by the addition of df8.ctg to book.bin
>
>and was + 3 after the first 10 games
>
>thereafter fruit played with own book alone
>
>What I have done is put all the fruit-shredder games into chessbase clipbase
>
>and organized by eco codes
>
>I then look for duplicate openings to see if perhaps shredder was helped by a
>previous game position
>
>There was no apparent evidence that Shredder benefitted from this
>
>Perhaps this is the wrong way to test - I am unsure as to how position learning
>works and maybe it works negatively in the avoidance of a position
>
>I don't know you tell me
>
>Tom

I think it would take a lot of games for position learning to be much factor.  I
cant see position learning being bad for an engine because the load into hash
would be at init so no slow down during game play and if the engine avoids a
position all together due to learning it means it could not find a good score
from any of the moves it did not play in that position last time. Book learning
however could be a controlling factor especially if the opposing engine does not
have a well tuned book or is using a book not tuned for that engine.  I do not
have windows so maybe someone can correct me on this but I think CB GUI handles
book learning for each engine using a CB book.  If this is true than both
engines would have equal learning chances so long as the book is good for the
engine using it.  I would not pick the fritz book for Fruit however due to a
much different engine play stile and see this as a disadvantage for Fruit.

Ryan



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