[Computer-go] scores histogram

[Don Dailey]

On Tue, Jan 10, 2012 at 4:50 AM, Vlad Dumitrescu <vladdu55 at gmail.com> wrote:

> Hi,
>
> I'm sure that such a simple histogram won't add much information, but
> it might hint at interesting things that can be investigated further.
> I'm still surprised that the peak of the curve seems to be at the komi
> value - my intuition regarding statistical results is usually wrong...
>

Join the club!   My approach to engineering in general is to assume that my
intuition is  wrong.   I use it to guide the process but I never trust it.
and where it takes me must be proved.

Don



>
> The peak for 19x19 is at around 11 for this experiment and this might
> mean that correct komi is depending on the level of the players. For
> the dumb playouts I use, it might be 11 and for top-level play it
> could go down to around 7.
>
> Or maybe komi is the same at all levels and then the professional
> players aren't as close to perfect play as they think they are :-)
>
> Or maybe many more samples are needed to get a significant result
> (currently running 100 million playouts).
>
> regards,
> Vlad
>
> On Tue, Jan 10, 2012 at 02:12, Hideki Kato <hideki_katoh at ybb.ne.jp> wrote:
> > Hi,
> >
> > I've observed some and found there are several peaks when the positions
> > are complicated, i.e., there are multiple semeais simultaneously, for
> > examples, on 19x19.  Simple statistics may not work on such positions,
> > though I've not tried any.
> >
> > Hideki
> >
> > Vlad Dumitrescu: <CAA-EFXtnEUUZf63K7Nx=
> 4ThZnr71iiE5zt00Steyx__aEga_KA at mail.gmail.com>:
> >>Hi,
> >>
> >>This is probably very close to useless, but it might be fun in a geeky
> >>kind of way :-) It might not be novel, either.
> >>
> >>I ran some playout games without komi (with simple policies: capture
> >>atari, escape atari, simple 3x3 patterns) and plotted the distribution
> >>of scores. I thought that the top of the bell curve would be placed at
> >>the ideal komi - well, close to it, as the playouts aren't very smart.
> >>The engine I used is Orego 7.10 and its scoring functionality.
> >>
> >>For 9x9 and ten million games, the top seems to be around 7.
> >>
> >>For 19x19 I only ran one million games and the top is difficult to
> >>locate precisely, it's quite flat between 3 and 21. The middle of this
> >>interval is around 11, which feels a bit high. I plan to let it run a
> >>while longer.
> >>
> >>regards,
> >>Vlad
> >>_______________________________________________
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> > --
> > Hideki Kato <mailto:hideki_katoh at ybb.ne.jp>
> > _______________________________________________
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