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Subject: Re: Selectivity

Author: Christophe Theron

Date: 10:12:38 01/14/01

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On January 14, 2001 at 00:33:56, Robert Hyatt wrote:

>On January 13, 2001 at 23:58:41, Christophe Theron wrote:
>
>>On January 13, 2001 at 15:03:01, Uri Blass wrote:
>>
>>>On January 13, 2001 at 13:38:48, Christophe Theron wrote:
>>>
>>>>On January 13, 2001 at 03:17:25, Uri Blass wrote:
>>>>
>>>>>On January 12, 2001 at 23:05:23, Christophe Theron wrote:
>>>>><snipped>
>>>>>>However I can tell you in advance that you will (probably) discover that Chess
>>>>>>Tiger and Gambit Tiger are extremely selective. And the next versions will be
>>>>>>even more selective.
>>>>>>
>>>>>>
>>>>>>
>>>>>>    Christophe
>>>>>
>>>>>
>>>>>Does it mean that it is not going to find a4 at smaller depth?
>>>>>
>>>>>Uri
>>>>
>>>>
>>>>
>>>>I don't care about finding a4. I don't care about solving test suites faster.
>>>>
>>>>I do care about playing stronger, and it's a different story.
>>>>
>>>>
>>>>
>>>>    Christophe
>>>
>>>Basically the stories are similiar and in most of the cases the better program
>>>in playing games is also better in solving test suites.
>>>
>>>Uri
>>
>>
>>I think you are right. But if my program gets better at solving test suites, it
>>will be because I'm trying to make it stronger in real games.
>>
>>That's why I don't care about finding a4 in this position.
>>
>>
>>
>>    Christophe
>
>
>This is a point I have made many times...  "cause" and "effect".  Is doing
>better on test suites an effect of playing better?  (I think so).  Or is
>playing better a result of doing better on test suites?
>
>There are other similar cause and effect questions about other things like
>space, mobility, etc...



In the case in question I agree with you that doing better on test suites is a
by product of playing better overall.

I have already noticed it, very clearly, with my own programs.

I have never noticed that it worked in the opposite direction, and I can even
say that I have noticed that I could easily weaken my program by trying to tune
it to test suites.

I have heard that some top programmers use test suites and I really wonder why
it works for them and not for me.



    Christophe



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