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Subject: Re: A New Self-Play Experiment -- Diminishing Returns Shown with 95% Conf.

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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