[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Bug-gnubg] Re: Cubeless Rollout Bug In New Build (Now fixed! )
From: |
Jim Segrave |
Subject: |
Re: [Bug-gnubg] Re: Cubeless Rollout Bug In New Build (Now fixed! ) |
Date: |
Fri, 10 Jan 2003 20:51:38 +0100 |
User-agent: |
Mutt/1.4i |
On Sat 11 Jan 2003 (07:08 +1300), Joseph Heled wrote:
>
>
> Moore, Dave wrote:
> >This is a pretty promising result! Just to play Devil's advocate,
> >though, isn't it possible that this shows that GnuBG is perhaps worse at
> >defending against a backgame while being equally good at playing a
> >backgame?
> >
> Neil choose this position because he thinks it represents a skill test
> for the backgame player only. I think this is mostly true. Some of us
> have looked at games played and I think no one saw big errors on the
> trapped side.
It depends on the move filters though. When I was syslogging
yesterday, looking for odd play during rollouts, I captured this
game. Rollout was at 2 ply, with the default filter setting:
2 moves at 0plky + 3 at 0.1
no one ply pruning
Re-analysing with a filter set
0 moves at 0 ply + 10 @ 0.5
no one ply
The backgame shows an overall error for the game of 0.076, with the
very first move at 0.43
This is not a bug, but simply an indication that in these positions,
the zero ply pruning needs to be very conservative (or liberal in the
sense of accepting lots of moves).
--
Jim Segrave address@hidden
g1-vr.sgf
Description: Text document