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Subject: Re: Question for Hyatt about Alpha/Beta

Author: Tord Romstad

Date: 12:47:32 02/06/04

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On February 06, 2004 at 10:46:17, Sune Fischer wrote:

>In an ideal world... :)
>
>Realisticly:
>* how much does it slow you down?

I don't know exactly, but I don't think it's extremely bad.  The good thing
about my engine is that everything else is also dead slow, hence the relative
cost of doing a complicated mobility eval isn't that big.  :-)

>* how accurate can you make it or is it at best still 30% noise?

Probably lots of noise, but I hope to be able to tune it better in
the future.

>* are the scores big enough to really matter anyway?
>etc.. :)

Maybe not now, but again, this is likely to change when (if?) I continue
to develop my engine.  You mentioned something recently that you called
"the fundamental principle of chess programming" (or something similar):
Never calculate something if you don't need it.  I don't follow this
principle at all.  I calculate lots of stuff which I hardly use at all
at the moment, or which is only used in tiny and unimportant components
of the evaluation function engine.  The point is that I hope it will be
useful some time in the future.  My basic principle is to write the engine
in such a way that I can add new knowledge at a very low cost.

The ideal world is far away, but I don't want to permanently block
those roads which could have a tiny hope of bringing me there.

Tord



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