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Subject: Re: Position Learning was: How to beat Rebel 9 in 16 moves!!

Author: Roland Pfister

Date: 23:28:59 11/12/97

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On November 12, 1997 at 11:43:51, Robert Hyatt wrote:

>
>I have not yet been able to re-annotate the entire game.  But O-O is now
>producing a reasonable score, and if it had to play O-O, it would follow
>it with g6 as you suggested.  And the score is now fairly close to the
>other moves, rather than being -8 worse.  :)
>
>The position learning is a problem.  I generally have everything on, as
>the
>default.  However, I'm thinking about making this learning option "off"
>by
>default as I get plenty of questions about the results this can cause.
>If
>you play down the O-O line a ways with position learning on, it can
>remember
>a bad position, and then when you back up and try O-O, the result of
>this
>bad position can filter into the evaluation and make analysis *very*
>confusing.

Position learning should speed up the search/analysis. If you get a
wrong score from position learning I suspect a bug somewhere.

The only problem I see with position learning is if you change
evaluation
in the meantime and use your old learn file with positions learned
by the old evaluation.

>It works great for those players that want to learn a
>particular
>opening, and discover that Crafty isn't very well booked for this
>particular
>variation.  It will still "learn" what is going on and continually find
>new
>and better ways to defend, until it "solves" it or you continue to find
>different ways to continue...

That is book learning or did I get it wrong?



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