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Re: [Bug-gnubg] I'm a bit confused
From: |
Jim Segrave |
Subject: |
Re: [Bug-gnubg] I'm a bit confused |
Date: |
Wed, 30 Jul 2003 17:05:04 +0200 |
User-agent: |
Mutt/1.2.5.1i |
On Wed 30 Jul 2003 (13:56 +0000), Joern Thyssen wrote:
> On Wed, Jul 30, 2003 at 01:25:36PM +0000, Joern Thyssen wrote
> > On Wed, Jul 30, 2003 at 12:57:03PM +0200, Jim Segrave wrote
> > > I just googled and as I read it, he's suggesting branching at
> > > double/takes, not continuing after double/pass.
> > >
> > > http://www.bkgm.com/rgb/rgb.cgi?view+567
> >
> > Yes, exactly.
> >
> > How does the Zehr-algorithm work? You have the results from the two
> > branches. What is it exactly that you add to the cubeful equity?
>
> After careful re-read I understand it now.
I assume that you recusively average the trees at each branch point.
> One other question: will this be extendable to match play?
I would have thought so.
But I wonder how well it works. Take a rollout of a position where one
player has an equity well past the doubling point. The initial action
is a double, so you now have two branches, one with an immediate
double, the other branch will probably fork again with a double on the
next play. This will continue until either the equity goes above the
too-good point or drops below the doubling point. But what has it
actually done to improve the variance reduction?
--
Jim Segrave address@hidden
- Re: [Bug-gnubg] I'm a bit confused, (continued)
- Re: [Bug-gnubg] I'm a bit confused, Joern Thyssen, 2003/07/29
- Re: [Bug-gnubg] I'm a bit confused, Joseph Heled, 2003/07/29
- Re: [Bug-gnubg] I'm a bit confused, Jim Segrave, 2003/07/29
- RE: [Bug-gnubg] I'm a bit confused, Albert Silver, 2003/07/29
- Re: [Bug-gnubg] I'm a bit confused, Joern Thyssen, 2003/07/30
- Re: [Bug-gnubg] I'm a bit confused, Jim Segrave, 2003/07/30
- Re: [Bug-gnubg] I'm a bit confused, Joern Thyssen, 2003/07/30
- Re: [Bug-gnubg] I'm a bit confused, Jim Segrave, 2003/07/30
- Re: [Bug-gnubg] I'm a bit confused, Joern Thyssen, 2003/07/30
- Re: [Bug-gnubg] I'm a bit confused, Joern Thyssen, 2003/07/30
- Re: [Bug-gnubg] I'm a bit confused,
Jim Segrave <=
- Re: [Bug-gnubg] I'm a bit confused, Joern Thyssen, 2003/07/30