Author: Dave Gomboc
Date: 10:14:59 03/28/00
Go up one level in this thread
On March 28, 2000 at 12:17:14, Tom Kerrigan wrote: >On March 28, 2000 at 11:08:59, Bas Hamstra wrote: > >>Question is: is move ordering very important near the root and less important >>near the leafs? Bob Hyatt says so. One mistake near the root costs millions of >>nodes. On the other hand almost all nodes are leafnodes, so bad ordering near >>the leafs costs millions of nodes too. > >I think so. At least in my program, hash table size does not matter much. (See >previous posts in this thread.) > >>Has anyone measured if you search somewhat deeper if you do extensive ordering >>near the root and cheap (just MVV/LVA) ordering near the leafs and in the >>qsearch? > >Because SEE only improves things by ~%10 over MVV/LVA, I don't think doing SEE >at the root and MVV/LVA otherwise would make much sense. You can do searches to >improve move ordering, which is the idea behind internal interative deepening. >So yes, people are doing this, and I believe it works, although I haven't tried >it myself. > >-Tom I have yet to figure out why people who use iterative deepening and understand why it works do not also use internal iterative deepening. Could somebody enlighten me? Dave
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