Author: Robert Allgeuer
Date: 10:49:46 06/17/04
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On June 17, 2004 at 05:09:36, Fabien Letouzey wrote: >On June 16, 2004 at 15:43:29, Tom Likens wrote: > >>Another option, which I don't currently use, is to blend (i.e. interpolate) the >>final >>score from the middlegame evaluation and the endgame evaluation. I believe >>Phanlanx, Gothmog and perhaps Fruit all use this technique so you might >>inquire from them how they apply it. I've always shied away from this idea >>because it seemed computationally expense, but perhaps not. > >>regards, >>--tom > >Fruit does exactly that, in an attempt to reduce the blemish effect described by >Hans Berliner. > What is the "blemish effect"? Is it a jump in the score? Why is it actually bad to have discontinuity in the scoring function? Thanks Robert >That means two scores are associated with each evaluation feature. The >"computational expense" can be reduced to near 0 if you feel like it (mixing two >16-bit values into a single 32-bit integer). > >Maybe the main drawback is that features are evaluated regardless of the >position. Of course you can make exceptions if you like, but that somewhat >defeats the original goal. > >Fabien.
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