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Subject: Re: on ceiling effects and the need for time adjustments

Author: Graham Banks

Date: 18:46:52 01/18/06

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On January 18, 2006 at 21:36:37, Joseph Ciarrochi wrote:

>I just ran a 4/4 match of rybka beta 1 versus ruffian 2.1 and rykba won
>13.5-1.5. It would be real hard for any later rybkas or any engine for that
>matter to improve on this score.
>
>Then it occured to me: Maybe this is a core problem with our testing. Do we have
>some ceiling effects going on? For example, both Grand masters and internal
>masters would beat me 20 -0, and both would receive the same ELO bonus (actually
>the GM would receive fewer points for beating me.). This happens despite the
>fact that the GM is much better.   The same thing may happen with engine
>tournements.
>
>Should we be perhaps giving a time bonus for engines below a certain strength
>(e.g. below ruffian).? If we want to maximize our sensitivity to engine
>differences, perhaps we should give a sufficiently long time bonus so that
>winning percentage is closer to 50% rather than 10%.
>
>It would be interesting to see how fruit, fritz and rybka performan against
>ruffian with a 50% time bonus.
>
>
>what do you folks think? Would time bonuses provide more meaningful data
>
>best
>Joseph


Hi Joseph,

I don't think it would provide any meaningful data to be honest. I'd have
thought that the main purpose of engine v engine testing was to determine which
performs better given equal conditions.
Just my opinion,

Regards, Graham.



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