Author: Tom Kerrigan
Date: 11:17:37 05/25/00
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On May 25, 2000 at 13:33:48, Ernst A. Heinz wrote: >>>Which reasons do you have to doubt that "Fritz 6" against >>>itself at any same depth "X <=> X" exhibits significantly >>>different behaviour than at depth "8 <=> 8"? >> >>But the same question can be asked of your experiment. > >There is an important difference -- in the case of "X <=> X" >at any depth X you always pit two _identical_ opponents against >each other which is not true for "X <=> X+1". > >Insisting on more than one calibration match essentially assumes >that the Black/White behaviour of the self-playing program (i.e., >"Fritz 6" in this case) changes with iteration depth. This might >indeed be possible but it is so unlikely that I did not deem it >worthwhile the effort to test. The paragraph on "Engine >Calibration" already says so. > >>Why would you believe >>that the "8 <=> 9" ply results would vary from the "11 <=> 12" ply results? > >I did not believe it -- that is why I ran the experiment. And now you do not believe that the "X <=> X" results would vary. Sounds to me like you should test this for the same reason that you did the "X <=> X+1" test. -Tom
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