Thanks for that, but it doesn't seem to help, or at least not much. The
behavior is qualitatively the same.

Maybe I shouldn't have included "strong" in my list of requirements. All I
really need is something that is much stronger at determining life and
death than what you can do by just looking at a group, with no search. But
it is very important that groups that are clearly dead end up dying and
groups that are clearly alive end up living.

On Tue, Nov 17, 2015 at 7:12 AM, Petr Baudis <> wrote:

>   Hi!
> On Tue, Nov 17, 2015 at 07:05:34AM -0500, Álvaro Begué wrote:
> > If anyone knows of a program that can actually use something like
> expected
> > score in the UCT move selection formula, that's probably what I need. I
> > might end up modifying Pachi to do this, but it sounds daunting.
>   That's already implemented - see the options described in uct/uct.c
> under the heading "Node value result scaling".
>   This even is one of the things that happens when you enable
> maximize_score, but the score takes just (at most) 0.01 of the value,
> where 0.99 is depending on win/loss.  You might try to see what happens
> if, in addition to maximize_score, you also pass
>         val_scale=0.1
> (instead of the default 0.01) or even larger value.  Not sure what
> effect on strength it might have.
>                                 Petr Baudis
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