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Subject: Re: Requested, and done! (better spacing of column titles)

Author: Uri Blass

Date: 06:43:53 04/28/01

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On April 28, 2001 at 09:10:42, Ratko V Tomic wrote:

>> Your data suggest that there is no evidence for diminshing
>> return in the nunn2 match at small depthes.
>
>The diminishing "returns" are already built in into the fixed ELO
>difference. Namely, the ELO difference (dE) formula:
>
>  dE=400*log(p/(1-p))
>
>gives:
>
>  p=1/[1+10^(-dE/400)]
>
>which means that for the fixed steps of increasing dE the
>corresponding 'win percentage' (p) steps become exponentially
>small with number of dE steps.

I meant to diminishing returns in rating and not to diminishing returns in p.

Uri



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