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Subject: Re: Performance of MTD(f) versus eval granularity?

Author: Robert Hyatt

Date: 14:52:53 11/01/01

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On November 01, 2001 at 16:31:30, Pat King wrote:

>A related question: How do lazy eval and MTD interact? It seems to me an initial
>eval far from beta and based on, perhaps, materiel only, could be saved in the
>hash table and later in the search become considered the PV. For that matter,
>PVS should suffer the same difficulty. Am I missing something, or is getting to
>the next ply expected to take care of this the majority of the time?


You just use the "initial alpha/beta values" for lazy eval, rather than
the current alpha/beta values which will always be of the form X,X+1.

Of course, that hurts efficiency of the lazy evals...



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