[computer-go] Elo and handicap matching

[Alain Baeckeroot]

Le mardi 4 décembre 2007, Don Dailey a écrit :
> The only issue is that I don't know if GnuGo is representative of 19x19
> to 9x9 go strength.   I am interested in knowing how a human 19x19
> scales down to 9x9 play.      It's well known that programs scale up poorly.

Ah yes, i forgot this :)
My personnal rule is 
- on 13x13 divide handicap by 2
- on 9x9 divide by 3

It is a bit rough, but quite good.

More subbtle attempts are summarized at:
http://senseis.xmp.net/?HandicapForSmallerBoardSizes
http://senseis.xmp.net/?AGAHandicaps

and http://www.timhunt.me.uk/go/handicaps/ with and "interesting observation"
in the end.

Alain.

> 
> However, this data should still be quite useful.
> 
> - Don
> 
> 
> Alain Baeckeroot wrote:
> > Le mardi 4 décembre 2007, Don Dailey a écrit :
> >
> >   
> >> For 9x9 ELO works better.     For 19x19 it's less clear cut.    The
> >> handicap system appears to be a good system at 19x19 and has the very
> >> nice merit of allowing grossly mismatched players to compete.       I
> >> think the two systems can be married by adding a fixed offset per stone
> >> handicap to your ELO.
> >>
> >>     
> >
> > Stats from official european go federation, on 150 000 games nearly solves
> > the problem of doing ELO vs handicap matching.
> > http://gemma.ujf.cas.cz/~cieply/GO/statev.html
> >
> > Just need to find one anchor, lets says gnugo , rated 6k on kgs in 2007-11...
> >
> > Alain
> >
> > PS i posted this link some times on the list, but nobody seems to 
> > consider it is useful (except Sylvain Gelly ;-)
> > I would be glad if someone could explain to me why this does not solve the
> > problem.
> >
> >
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> >
> >   
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