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Subject: Re: Crosstable

Author: Uri Blass

Date: 14:37:30 08/16/05

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On August 16, 2005 at 17:30:02, Paolo Casaschi wrote:

>On August 16, 2005 at 17:26:28, Dann Corbit wrote:
>
>>On August 16, 2005 at 17:16:33, Paolo Casaschi wrote:
>>
>>>>I know that usually when program improve they improve in all time controls.
>>>>I do not know of evaluation changes or search changes that make programs weaker
>>>>at blitz but stronger at long time control.
>>>>
>>>>In thoery it can happen but I need to see a proof for it and I believe that
>>>>fabien mainly test in blitz time control(he can correct me if I am wrong)
>>>>because usually productive changes in blitz of adding knowledge to the
>>>>evaluation are also productive at long time control.
>>>
>>>Do you have any proof or evidence that there is some correlation between blitz
>>>strenght and slower speed strenght?
>>>If you dont, then we can only compare assumptions and I tend to agree with Bob
>>>Hyatt since the same non-correlation is evident with humans and because common
>>>sense...
>>
>>There is definitely a general correlation between strength at blitz and strength
>>at standard time control.  However, there are also exceptions to the rule.
>>
>>For instance, we will expect Fruit to be stronger than Golem at blitz, in the
>>same way that we would expect Kasparov to clobber me at blitz.
>>
>>On the other hand, Mike Valvo overperforms at blitz, and Amy used to
>>underperform badly (it was mostly due to bad algorithms for time management at
>>fast time control).
>
>Exactly my point.
>There is some correlation but there are exceptions and it's possible that
>different players have a different type of correlation, thus the point of Bob
>Hyatt stands.
>
>--Paolo

I still need to see an example for programs without significant bugs that show
significant difference(Amy is not a good example because of bad time management)

There may be cases when A is 50 elo weaker at blitz and 50 elo better at long
time control but I doubt if you can find cases when A is 100 elo weaker at blitz
and 100 elo stronger at long time control.

Uri



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