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Réf. : [Bug-gnubg] Suggestion for change of rates/ ratings

From: Massimiliano . Maini
Subject: Réf. : [Bug-gnubg] Suggestion for change of rates/ ratings
Date: Thu, 30 Mar 2006 18:01:09 +0200

>Hi all,
>it is well known that gnubg judges the players harder than snowie.
>Snowie error rates seems to be defacto standard when judging players. To
>see how gnubg and snowie error rates compare I tried downloading 25 or
>so matches from Hardye's site, all played between more or less world
>class players and most of them quite long. They were analysed using
>gnubg 2ply/2ply.
>To summarise:
>snowie_m  snowie_c   snowie  gnubg_m  gnubg_c   gnubg
>    3.91      1.66     5.58     9.36    21.51   11.25

What are snowie_m  snowie_c   snowie  gnubg_m  gnubg_c   gnubg ?!

>So given these numbers I suggest that we adapt snowie's rate/rating
>groupings, but that we divide the gnubg move-error and total-error rates
>with 2 and the cube error rate by 4. That way it will be easy for people
>to understand the numbers and to compare an intermediate snowie player
>to an intermediate gnubg player. Of course the move ratings and the
>total ratings of gnubg will not be directly comparable. But it will
>complicate things unnecessary to make it any different.

In match stats there's a "Equiv. Snowie error rate", so why not adding an
"Equiv. Snowie overall rating" based on the "Equiv. Snowie error rate"
(using same grouping as Snowie) ?

This would be Snowie-like without changing gnubg rating system ...


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