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Subject: Re: Limited singular extensions. Anybody tried?

Author: Dan Andersson

Date: 11:55:06 05/18/01

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The function you use to trigger the SE test need not be only static in nature.
One or more components of the function could be predicated by previous
behaviour. For example: Adding a density function taking into account a
increased or decreased probability of singular moves for the part of the tree
you are searching presently, maybe hashed information. Multiplying the static
factors by a function based on how previous predictions went. And adding a
factor based on time to avoid overtraining. Any such dynamic scheme is almost as
fast as a purely static function (even if it would be a higher order function)
and I would be surprised if it did not significantly outperform the static
function search, YMMV. I use such a scheme to enable a pn-search based pruning
currently. You could also make a profiler to measure what factors contribute
positively and negatively to correct prediction. The possibilities for
automation are big.

Regards Dan Andersson



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