Author: William H Rogers
Date: 12:28:49 08/09/02
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On August 09, 2002 at 12:06:35, Jim Monaghan wrote: >Hi, > >Comparision of Ply Depth verses Rating Performance > >I understand this has been done before and probably much better. Anyway, I ran >the IQ test as Bill suggested. Working with average ply depth instead of time, >makes the table more universally applicable to different programs and hardware. >Again there is nothing absolute about the rating numbers -- it's the differences >that are important. By pumping it through Yace 0.99.56 at ascending ply depths I >came up with the following table: > >Cel 1.3 Ghz/256 (32 MB HT) > >Ave Depth Found Percent IQ elo Rating Gain >(Plys) (Total=360) (Max=2764) (Difference) > >5 159 44.17 2094 -- >6 206 57.22 2251 157 >7 241 66.94 2367 116 >8 271 75.28 2467 100 >9 288 80.00 2524 57 >10 308 85.56 2591 67 >11 315 87.50 2614 23 > >Jim Those are very close to what was once gained by Belle (?). I will try to look up the games that were published and will post them once again so that you can see the different. They noted that at the higher plys the gain got smaller and smaller so that in theory at least, depending on the initial strength of the program it would eventually reach a point where it could not gain much if any more points in playing strength. It does not seem really possible except when we consider that it may gain only 1 or 2 point with each successive ply. To my knowlegde no one has had the time or patience to go much further, after all 12 or 13 or 14 or more plys might take days to complete if not even longer. Thanks for the good work. I'll post the rest later. Bill
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