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Subject: Re: Definition of branching factor?

Author: Severi Salminen

Date: 05:40:23 02/01/01

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>I would also like to know these things.  It looks like my branching factor is
>varying from 3 to 6 on average.  Are these results for chess?  Is it from the
>initial board position?

Yes, we are still talking about chess :) And we are talking about position after
1.e4 e5 2.d4 d5 .The EBF depends a little on how you calculate it.  My 3.6 is
from:

EMF=pow(leaf_nodes/legal_rootmoves, 1/(depth-1));

If I use time for calculation my EBF from ply 8 to 9 is about 2.9.  And you
probably get similar results if you use the node count from successive plies.
Could you post your numbers on this position also? I'll post mine tomorrow when
I get to the right computer. Also indicate how you calculate EBF. (Effective
Branching Factor)

Severi



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