It was the starting checker setup for a one point match and I put the
advanced player on roll. The pos ID is
4HPwATDgc/ABMA and the match id is cAkgAAAAAAAA. Let me try to geive a more
complete list of settings.
The settings used for both rollouts were the following:
i) to truncate cubeless at exact bearoff databaseii) variance reductioniii) use
quasi random dice
iv) rollout as initial positionv) cube decisions use same settings as checker
play
vi) seed = 1001
vii) 10800 games
viii) player 0 set to play as expert
ix) player 1 set to play as advanced
x) g11 match equity table
The only difference in the settings for the two rollouts were that one had
cubeful checked and the other did not.
The one with cubefull checked gave .472404 wins and the one with it not checked
gave .458272.
I wasn't expecting it to be .50 due to both the fact that one player was set
to advanced and the other expert and also as you point out
that one player is set to be on roll. The surprising thing to me is that one
setting gave a significatly higher win %age. Since it is a one point
match the cubeful evaluations should be exactly the same as non-cubeful.
Bob Koca
> > Message: 4> Date: Wed, 11 Jul 2007 22:50:03 +0200> From: "Christian Anthon"
> > <[EMAIL PROTECTED]>> Subject: Re: [Bug-gnubg] checking cubeful or not makes
> > a difference> when it shouldn't> To: "bob koca" <[EMAIL PROTECTED]>> Cc:
> > [email protected]> Message-ID:> <[EMAIL PROTECTED]>> Content-Type:
> > text/plain; charset=UTF-8; format=flowed> > It sounds strange, but please
> > provide a __minimal__ example of the> problem. Including position and match
> > id's and the settings you> change.> > Note that even though it is an
> > initial position a specific player is> on roll. So even if you set expert
> > to play against expert you would> expect to see a resulting equity
> > different from 0.> > Christian.> > On 7/11/07, bob koca <[EMAIL PROTECTED]>
> > wrote:> >> >> > I rolled out a one point match using player 0 as advanced
> > and player 1 as> > expert.> > I had the advanced player on turn and used
> > the rollout as initial position> > option.> > In one rollout I checked
> > cubeful under general settings and the other one I> > didn't. I> > was
> > expecting the rollouts to be exactly the same since there are no cube> >
> > considerations to be made in a one point match. However they were not.
> > Even> > more perplexing is that the difference was definitely
> > statistically> > significant.> > With the cubeful box checked off the
> > advanced player had .472404 wins with> > std error of .001281.> > With the
> > cubeful box checked on the advanced player won .458272 with SE of> >
> > .001268> >> > Other settings that I had checked were> > i) to truncate
> > cubeless at exact bearoff database> > ii) variance reduction> > iii) use
> > quasi random dice> > iv) rollout as initial position> > v) cube decisions
> > use same settings as checker play> >> > Is it a bug that the results are
> > not the same? What should I use to see> > correctly> > how often advanced
> > would beat expert in one point match?> >> > thanks for assistance, Bob
> > Koca> >> >
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