[computer-go] creating a "random" position

[Chris Fant]

In that case, you would probably rather have actual Go positions,
right?  Just grab a bunch of CGOS games (assuming you are studying
9x9) and pick a game and move number at random.


On 7/9/07, George Dahl <george.dahl at gmail.com> wrote:
>
>
> On 7/9/07, Erik van der Werf <erikvanderwerf at gmail.com> wrote:
> > On 7/9/07, George Dahl <george.dahl at gmail.com> wrote:
> > > I think this is what I want.  Thanks!  So I might have to repeat this
> > > a few hundred times to actually get a legal position?
> >
> > Are you aware that nearly all of these positions will be final positions?
> >
> > So I'll repeat my question: why do you need any of this? If you only
> > need final positions it's probably much better to take them from real
> > games, and if you actually need middle game positions you will have to
> > use a different procedure...
> >
> > E.
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>
>
> Won't the final positions be much more likely to be rejected since they are
> much more likely to be illegal?  What is your claim about the distribution
> of the number of stones on the board with this scheme?
>
>  I am hoping to use this method to help generate training data for a
> learning system that learns certain graph properties of the board that can
> also be computed deterministically from the board position.  I know that
> might sound crazy, but it is working towards the eventual goal of creating
> feature extractors for Go positions.  By learning to map Go positions as an
> array of stones to Go positions as graphs of strings (instead of just
> mapping them with a hand coded algorithm) I can take intermediate results in
> the learner's computation and use it as a feature for another learner.
> - George
>
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