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Subject: Re: Anyone for an 'increasing expectation' heuristic?

Author: David Blackman

Date: 02:45:19 05/03/99

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On May 03, 1999 at 05:04:47, Francis Monkman wrote:

>The idea is more or less along these lines: keep the score for each move at each
>ply-depth of search, then the resulting 'statistical curve(s)' can be used to
>determine whether a move is gaining in 'expectation-value' (and hence should
>definitely be explored thoroughly). Conversly, programs often seem to choose
>moves that seem stronger,even though they are losing expectation-value as the
>search deepens -- perhaps this might be avoided by such a  method, too.
>
>Francis

This is a bit tricky with alpha-beta because you don't get exact evaluation for
anything except the "best" move. Hence the idea of using node counts. Any other
ideas for finding 'expectation-value'?



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