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Subject: Re: So we can conclude: Shredder 9 UCI isn´t stronger than Shredder 8 UC

Author: enrico carrisco

Date: 11:39:14 07/31/05

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On July 30, 2005 at 09:41:48, Günther Simon wrote:

>On July 30, 2005 at 06:01:06, Drexel,Michael wrote:
>
>>
>>...at all with this time controls and hardware used?
>>
>>http://chessprogramming.org/cccsearch/ccc.php?art_id=364117
>>
>>Sandro claimed Shredder8.bkt and more effective learning should increase the
>>rating by about 35 points over Shredder 8 CB.
>>
>>Michael
>
>May be Shredder 9 increased its strength especially at shorter time controls,
>when previous versions were known to be better at long time controls?
>
>Guenther

This is exactly why authors/testers do not like to quote improvements in terms
of ELO estimates.  It's asked for and asked for and then when an _estimate_ is
provided, it's never put to rest if it is not _exactly_ correct.

I do not feel Sandro was trying to mislead anyone and was giving his best known
estimate at the time.  Certainly the margin between Shredder 8 UCI and Shredder
9 UCI is less than between Shredder 8 CB and Shredder 9 UCI (that the SSDF
outlines.)

It's too bad the SSDF list didn't stick with all UCI testing or all CB testing,
however.  Otherwise, all UCI and all CB versions of Shredder should have been
tested.

-elc.



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