Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: How is the cAP-code in Crafty 17.0 doing?

Author: Robert Hyatt

Date: 11:39:33 10/23/99

Go up one level in this thread


On October 23, 1999 at 13:21:21, Torstein Hall wrote:

>On October 23, 1999 at 12:52:11, Robert Hyatt wrote:
>
>>On October 23, 1999 at 11:14:07, Michel Langeveld wrote:
>>
>>>Thanks in advance.
>>>
>>>I want to try it myself ;-)!!!
>>>
>>>Michel Langeveld
>>
>>
>>It is too early to say.  Compared to the opening book I use, less than 100K
>>of the positions have CAP scores.  Which means that many positions have no
>>data at all.
>>
>>Another problem is that the CAP data is of the form
>>
>>  <position>  <score>  <best move>
>>
>>I can use that... but what I _really_ need to do, and I don't have the code
>>to do yet, is to do a simple minimax of the CAP scores back up thru the book.
>>IE if the best move in position P is Rh1 with a score of +1.3, then I need to
>>know that any move that leads to position P (with no cap score in the file)
>>ought to have a score of -1.3.  I don't do this yet, which hurts.  I think it
>>will be even more useful once I have time to write that code.
>
>What is CAP scores?
>
>Torstein


These are frequenly occuring positions, searched to very deep depths in a mass
search problem.  I have taken the scores and merged them into a new book
structure for 17.0...



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.