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Subject: Re: The reason that gandalf is a good program for analysis

Author: Uri Blass

Date: 07:02:04 11/24/00

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On November 24, 2000 at 09:05:15, Peter Fendrich wrote:

>On November 24, 2000 at 02:47:09, Uri Blass wrote:
>
>>On November 23, 2000 at 19:06:29, Peter Fendrich wrote:
>>
>>>On November 23, 2000 at 16:10:54, Uri Blass wrote:
>>>
>>>>On November 23, 2000 at 12:33:12, Peter Fendrich wrote:
>>>>
>>>>>On November 22, 2000 at 12:10:18, Uri Blass wrote:
>>>>>
>>>
>
>-- snip --
>>The reason is simply for analysis of correspondence games.
>>
>>I generate a small tree of moves and I want to use the evaluations after search
>>in the leaves of the tree to decide about my move.
>>
>>If I use a preprocessor I cannot compare between the evaluation in different
>>leaves because they are based on different tables.
>>
>>If I do not use a preprocessor I can do it.
>>
>>Uri
>
>In that case I think you definition is perfectly allright.
>Even small gradually changes between rootnodes will give
>different evaluations, not comparable beteween rootnodes.
>Terra is preprocessing!
>Another thought: These numbers can't be of much value in corr. games. I mean the
>positional/strategic knowledge in chess programs isn't much to rely on.


I think that the positional knowledge of myself is also not much to rely on.
If I think that the evaluation of programs is wrong then I try to generate the
tree that is going to convince the program that it is wrong.

If I fail to generate the relevant tree then probably my evaluation is the
wrong one.

>When material is the difference however, then the preprocessing has no impact
>anyway.

I think that there are cases when the evaluation is changed by a pawn because of
preprocessing so preprocessing may influence also in this case.

Uri



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