But it does have real meaning.   People talk about Dan level 9x9 go
programs and so all I'm looking for is a way to instrument this in a
meaningful way.

If a 9x9 program is estimated to be 2 dan on CGOS, it means a typical 1
dan player will lose to it and a typical 3 dan player will beat it.   
It's a matter of adjusting the constants to make sure this is so.   

We cannot use the kyu/dan system for handicap on 9x9, it doesn't work
and that's understood - we are just trying to get a sense of how  these
9x9 programs compare to humans. 

- Don



steve uurtamo wrote:
> not to put too fine a point on it, but "estimating dan ranks" via
> 9x9 games is a bit silly.  it doesn't actually capture any extra
> information about the program, since there's no such thing as
> a 9x9 rank to compare with/against, much less a dan rank.
>
> ELO works well because it's strictly arbitrary relative to the
> anchor.  human kyu/dan ranks are arbitrary as well, but there
> are thousands of people feeding ELO (or something like it) in
> and out of the system, and there's an easily measured "top end".
>
> i'm just saying, it will look a bit silly -- imagine if when chess
> programs started to completely dominate something like 5x5 chess,
> the strongest programs were labeled "master level play".
>
> well, sure, at 5x5 chess...
>
> there's a reason that KGS won't assign a rank to a player that
> only plays 9x9 games.  the rating system isn't really built for
> a board that small, in the sense that handicaps are massively
> nonlinear at that size.  the main motivation for kyu/dan rankings
> is to establish handicap stones, after all...
>
> s.
>
>
>
>
>       
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