Author: KarinsDad
Date: 10:51:09 05/05/99
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On May 05, 1999 at 13:30:59, Dave Gomboc wrote: >On May 05, 1999 at 11:32:15, KarinsDad wrote: > [snip] >> >>I am doing the opposite. I extend whenever anything interesting is going on >>(such as non-quiescence) almost as far as I can go. I then mark the >>non-quiescent children nodes as being searched so that they do not get >>re-searched (when I get to the next ply). > >You are supposed to continue to extend the search from the positions where it >first decided to extend in all subsequent searches! Otherwise, you will >encounter the depth-valley effect. Do you have access to Singular Extensions: >Adding Selectivity to Brute-Force Search? (1991, title from memory). It might >be in a journal at a local university library. I do not fully understand what you are saying here. Could you please elaborate? What is the depth-valley effect? And no, I do not have access to that book (at least not at the moment). > >I was going to quote some stuff from it (including definitions for PV- and >FH-singular) but I'm not sure where it is at the moment. If I uncover it I'll >let you know. Thanks. Please do. KarinsDad :)
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