I think it is good to know that the EGF rating system is a modified version of the ELO rating system. AFAIK the ELO rating system links a 100 point difference to a winning percentage of 68% (corresponding to 1 standard deviation in the normal distribution). The EGF rating modifies this by rank dependent weights so that a 100 points difference corresponds to 1 rank (dan/kyu) difference. I think the world champion would have an EGF rating of about 3000 points, corresponding to an amateur 10d.
I am currently investigating the actual statistics. At 7d a rating difference of 500 points corrresponds to a winning percentage of 99% and near 10k it corresponds to a winning percentage of 75%. I also have to add that these percentage are biased, because of the fact that a tournament game took place in a european tournament which are mostly paired in the MacMahon way. This means that the stronger player is doing badly or the weaker player is doing well (or both) in this particular tournament. But anyway, this difference is accounted for in the EGF, because otherwise the corresponcence of 100 point to 1 rank would be lost over time.
Dave
----- Oorspronkelijk bericht -----
Van: terry mcintyre <[EMAIL PROTECTED]> Datum: vrijdag, december 29, 2006 10:16 pm Onderwerp: [computer-go] multiple entities may complicate things > Don proposed creating multiple entities for programs playing at> different handicaps.
>
> That seems to complicate things. Is it possible to factor
> handicaps into elo-style ratings?
>
> We might start with some assumptions that, for example, 100 elo
> points is comparable to a one-stone handicap, test the
> assumptions, and make adjustments as appropriate. Given enough
> games, it might even be possible to answer the question of whether
> the handicap stones vs elo rating is best represented as a linear
> or nonlinear function. Some suggest that the answer would depend
> on the ability to use the handicap stones to good effect.
>
> There is some extensive discussion of existing rating systems here:
>
> http://en.wikipedia.org/wiki/Go_ranks_and_ratings
>
> Terry McIntyre
> UNIX for hire
> software development / systems admin istratio
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