[Bug-gnubg] Re: Long GNU rollout results

[Neil Kaz]

Thx everyone..I want to perfectly understand what GNU is doing in rollouts
and how/why it is presenting the data like this. I hope to be 100% certain
that GNU is doing everything like it is supposed. ..ie perfectly evaluating
the plays and cubes according to match score.

thx...neilkaz..

----- Original Message -----
From: "Øystein Johansen" <address@hidden>
To: "GnuBg Bug (E-mail)" <address@hidden>
Cc: <address@hidden>
Sent: Saturday, January 04, 2003 10:23 AM
Subject: Fwd: Long GNU rollout results


> Hi,
>
> I'm forwarding this posting to GammOnLine by Neil Kazaross. Can someone
> answer?
>
>
> ---8<---8<---
>
> Overnight I did 6480 games 1ply/cubeful with GNU which will play
> according to score. It shows that Douglas is correct that this just
> isn't good enough to cube, even at this score.
>
> Anyhow..I remain confused about a couple of things with GNU rollouts.
>
> 1) Can someone, in detail. please explain how the numbers in the first
> line (cube analysis) are obtained.
>
> 2) Why are there always very slight differences in the rollout details
> between centered 1 cube and opp owns 2 cube ? This makes absolutely no
> sence at all. In a live cube position it cannot be possible nor accurate
> to measure rollout details as presented below since over a series of
> games, the cube will be at different levels. I'd like to be able to
> trust GNu rollouts 100% and be 100% sure that it is playing and handling
> the cube with out bugs in match situations but when I see the data
> presented in a way that makes no sence, I cannot have the confidence I'd
> like to have.
>
> My appologies to the GNU programmers, but I simply want to have 100%
> trust in GNU.
>
> Cube analysis Rollout cubeless equity +0.362 (Money: +0.343)
>
> 1. No double +0.490
> 2. Double, pass +1.000 ( +0.510)
> 3. Double, take +0.470 ( -0.021)
> Proper cube action: No double, take (3.9%)
>
> Rollout details:
> Centered 1-cube:
>  0.599 0.278 0.010 - 0.401 0.130 0.014 CL +0.362 CF +0.490
> [0.001 0.001 0.001 - 0.001 0.001 0.001 CL 0.003 CF +0.007]
> Player gnubg owns 2-cube:
>  0.597 0.285 0.010 - 0.403 0.135 0.022 CL +0.796 CF +0.470
> [0.001 0.002 0.001 - 0.001 0.001 0.001 CL 0.007 CF +0.009]
> Full cubeful rollout with var.redn. 6480 games, seed 1195169792 using
> quasi-random dice and Mersenne Twister Play and cube: 1-ply cubeful
>
>
>