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Re: [Bug-gnubg] Why is odd ply equity always lower?

From: Joern Thyssen
Subject: Re: [Bug-gnubg] Why is odd ply equity always lower?
Date: Thu, 19 Jun 2003 09:39:50 +0000
User-agent: Mutt/1.4.1i

On Thu, Jun 19, 2003 at 10:54:42AM +0200, Nis wrote
> --On 19 June 2003 07:20 +0000 Joern Thyssen <address@hidden> wrote:
> >On Wed, Jun 18, 2003 at 10:24:38PM +0200, Nis wrote
> >[snip]
> >>Only relevant for cube decisions?
> >>
> >>The wrong estimations of equity is mainly a problem of absolute
> >>equities.  As Joseph has pointed out, chequerplay relies almost solely
> >>on the relative  equities of positions.
> >>
> >>Thus a fix should only "need" to be applied for cube decisions (and
> >>cubeful  chequerplay? Someone help me here)
> >>
> >>So we might want to start using reduced evaluation settings for cube
> >>decisions
> >
> >Haven't seen your patch yet, I think it may be much easier if we add an
> >option to evalcontext that enables this. The evaluation routines doesn't
> >really know if it's evaluating a cube decision or chequer play decision.
> My idea was to set this up in the predefined evaluation settings.

The predefined evaluation settings are identical for chequerplay and
cube decisions -- that's another TODO.

Also, the predefined settings are just an array of evalcontexts, hence we
should add a parameter to evalcontext to enable n+.5 ply evaluations.

> TODO: allow named configurations to be set up by command:
> set evaluiation HUGE

This is a bit difficult with the way the commands are handled. It's much
easier to add new commands:

set evaluation predefined HUGE


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