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Subject: Re: Definition of branching factor?

Author: José Carlos

Date: 11:37:02 01/31/01

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On January 31, 2001 at 13:43:16, Larry Griffiths wrote:

>On January 30, 2001 at 17:46:28, Severi Salminen wrote:
>
>>Hi!
>>
>>What is the definition of BF and how is it calculated (this has probably been
>>discussed N times, but...)? Now I'm calculating like this:
>>              ______________________
>>BF=(DEPTH-1)|(Nodes/root_move_count)
>>
>>So it means (DEPTH-1)th root.
>>
>>Example (from Vincent's position): DEPTH=9 plies, Nodes=2'000'000 and we have 38
>>legal moves in root.
>>     ____________
>>BF=8|2'000'000/38 = 3.9
>>
>>Could this be close to the truth?
>>
>>Severi
>
>This looks like an nth root of the 2000000/38.  How would I code this in C++ to
>get this 3.9 value?  My math skill since high school has gone down tremendously.
>
>Larry.

  If I undestand you right, what you ask is this:

  nth root of a = a^(1/n)

  right?

  José C.



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