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Subject: Re: SSDF. Gandalfs LEARNING is destoyed when aborting!!

Author: Mike S.

Date: 12:02:24 10/18/00

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On October 18, 2000 at 14:25:33, Uri Blass wrote:

>>(...)
>>1. switch off all (permanent) learning
>>2. remove all doubles (!!) from the results
>
>In this case you may get a match of only 2 games when both sides always repeat.

I think any book has at least some variety even at tournament setting. Few
exceptions.

>(...)
>Suppose a program learns to have better evaluation function from games(I do not
>know about programs who do it but I believe that it is possible).

Yes, it was said that Deep Blue did this, and one of the older Nimzo versions (3
I think) has a function too, to distillate learning data from game databases.
But this were additional features, not an automatical learning from the games
the program played.

Nevertheless, all those learning functions are interesting of course, but I
think they should be examined in special tests, comparing the effectiveness etc.
I can imagine that such a test would be difficult to design.

The documentation of learning functions is also not satisfying IMO. For example
the question of different time controls, or different hardware speed... What the
program thinks to be a mistake on P200, may look differently if I upgrade to
PIII/800. Does the program use the data as if it was produced on the faster
computer, or not? The same question applies for different time controls. As a
customer, I never know exactly when and how a program learns, and when and how
this data is used. There is a lack of in-depth manuals accompanying the
programs.

Regards,
M.Scheidl



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