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Subject: Re: I have cloned Ferret!

Author: Chris Carson

Date: 13:02:43 10/21/99

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On October 21, 1999 at 15:55:40, Robert Hyatt wrote:

>On October 21, 1999 at 14:33:39, Dave Gomboc wrote:
>
>>On October 21, 1999 at 10:03:22, Chris Carson wrote:
>>
>>>On October 21, 1999 at 09:03:34, Robert Hyatt wrote:
>>>>
>>>>I would ignore it.  It simply won't work.  Ferret and CM are totally different
>>>>in their searches.  It would be impossible to tune the eval and make the two
>>>>programs play the same. Match for a specific set of games?  Of course.  Match
>>>>in real games?  not a chance.
>>>
>>>I agree with Bob.  I have CM6K and you can create a personality, but
>>>it will not be an exact or close to prediction of future move selection
>>>for a given person or program.  This is a type of regression technique
>>>(known data to predict future events), the error of measure for this would
>>>be very large (ie: not very accurate).  Just my opinion.  :)
>>>
>>>Best Regards,
>>>Chris Carson
>>
>>The original poster might find another 70 games that weren't in the initial set,
>>and compare to see the matching rate with those.
>>
>>Dave
>
>
>This "approach" is just like tuning a program's eval so it will match the
>moves made by a GM.  Without understanding why the GM made the moves in the
>first place.  For a finite set of moves, you can get very accurate matches
>using a least-squares approach to fitting.  But when you play a _new_ game,
>you find just how badly this does.
>
>Ferret and CM are so different in their search approach and evaluations, that
>trying to adjust one to act like the other would be hopeless...  An interesting
>exercise?  probably.  But accurate?  nope.

Well said.  :)

Best Regards,
Chris Carson



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