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

Author: blass uri

Date: 14:46:55 05/24/00

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On May 24, 2000 at 17:27:19, Dann Corbit wrote:

>I have a bit of a puzzle.
>
>In these experiments, you varied the depth from 5 to 12 plies, but in the "goes
>deep" experiments, it was deeper, if I recall correctly.

It was deeper but it was not based on comp-comp games and I think that the
positions do not demonstrate what happens in comp-comp games(I read that the
positions were taken from kasparov-deep blue games and if this is the case
kasparov chose positions that computers do not understand so the fact that they
changed their mind even at big depthes is not surprising(you change your mind
when you have no idea what to do).

>
>In the earlier experiments, it seemed to level out.
>
>I would like to see control matches where the plies are equal.
>IOW, 5:5, 6:6 up to 12:12.
>In that way, you will know what the gain of the extra ply is.  I don't think you
>can tell clearly strictly from the data given.
>
>For example, in your 12 <==> 11 experiment, you show 35.71% wins, 52.38% draws,
>and 11.9% losses.  What would the result be for 12:12?

I guess that the result will be 50% because Fritz6 played against itself.

You can learn from 12<==>12 experiment about the number of draws but I do not
see what you can learn about diminishing returns from more plies.

Uri



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