Author: Bert van den Akker
Date: 12:46:40 11/22/99
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On November 21, 1999 at 17:08:36, leonid wrote: >On November 21, 1999 at 14:59:53, Bert van den Akker wrote: > >>From the start position I get a branche factor of about 14% >> >>This is in a 10 ply search from the start position. >> >>The branche factor is defined as: >> >>(total_number_of_moves_looked_at_in_a_node_before_cutoff / >>total_number_of_generates_moves) * 100 >> >>Only in the normal search no (quiesence search not counted)) >> >>In my case fo a 10 ply search >>branche factor = 14.2408293344493% (955856/6712081) >> >>Is this branch factor good or bad? >> >> >> >>BvdA > > >Your branching factor (such as you described it) is excellent! Would like to be >there. > >I understood your factor as a number calculated when brute force search is >executed and no extensions were there. > >Your number I consider to be good because of two reasons: > >1) If there are no extensions and calculation done by brute force it is beter >that mine in around 7%. > >2) If you logic do the extensions, it is just where it must to be compared with >few best games that I tryed for this purpose: Genius 4, Rebel 10 and Hiarcs >7.32. > >All the best in your programming! > >Leonid. I do some extensions. 1. Check extension 2. forced move extension (only one move) 3. threat extension. I also use the nullmove which has a big inpact on the branch factor I defined. bvdA
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