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Subject: Re: Crafty 19.15 vs ShredderClassic-engine (long)

Author: Robert Hyatt

Date: 11:57:02 07/27/04

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On July 27, 2004 at 13:32:54, Ingo Bauer wrote:

>Hi
>
>>>Second round with Crafty having black just started and of course I deleted all
>>>learning values from the previous round!
>>
>>Not sure for the reasoning for doing this.  Humans are not allowed to learn
>>anything when they play white and lose, so that they can use that information
>>when playing black???
>
>Of course I delete the learning for both engines!!! All I wanted to do is having
>the same clean start for both engines. The engine that is having white would
>have the possibility to learn something for its "black" game that the other
>engine could not do when having black first.

That logic is broken.  If an engine plays black, it learns for "both sides".  If
an engine is white, the same thing holds.  Disabling learning seems wrong, since
it is a part of each engine, depending on how well it is implemented.  Tuning
bits of a program on or off on a whim seems somehow wrong unless the goal is
_not_ to measure the strength of the entire "entity" but rather to measure the
strength of a subset...


 (And, yes the black-first engine
>could learn something for its white game, but who knows if that is identical?)
>
>>Why not just disable learning completely?
>
>Yep, you are right here. I could (and should) have done this. Have not thought
>about it but do you think that deleting it after each round is doing any harm? I
>am pretty sure that does not matter. I will do it for future games.

For "Nunn matches" I don't think it matters since in theory, the same position
will not be reached twice since each opening is different.

However, the idea of keeping learning active makes sense since each program
plays the same opening from both sides.  What it learns from one side ought to
influence it when it plays the other side, like a human...


>
>Bye
>Ingo
>
>PS: Again something (learn off) I would have to find out for every WB-engine
>induvidually :-(



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