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Re: [Bug-gnubg] Analyse / Rollout - do we need it?

From: Michael Petch
Subject: Re: [Bug-gnubg] Analyse / Rollout - do we need it?
Date: Fri, 14 Oct 2011 10:51:18 -0600
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:7.0.1) Gecko/20110929 Thunderbird/7.0.1

On 14/10/2011 10:36 AM, Ian Shaw wrote:
> Ian adds: Analyze/Rollout/Move also only rolls out Cmarked chequer
> plays for a single move, so putting "Rollout Marked" on the drop-down
> menu still makes sense. I've just tried Analyze/Rollout/Cube on my
> game with no cube positions in the analysis (effective DMP; 2-away
> 2-away, cube=2) and had an interesting result. It reports that I get
> negative number of trials, and I get a Cube Decision tab appearing in
> the analysis window. Not sure quite what's going on here. The cube
> action wasn't Cmarked, obviously, so the behaviour is inconsistent
> with the other items on the Analyze/Rollout menu. -- Ian 

Yes, the Analyse/Rollout/Cube will actually operate on non-cmarked
moves. I was aware of this previously which was why I had a concern that
"Rollout Marked" may not apply to all 4 of the options currently under
that menu. We could rework the menu.

As for the negative numbers. Timothy Chow reported this unusual behavior
a month or two ago. It seems related to changes in the past4-6 months. I
haven't got to look at it closely. It is almost appears as if the
rollout threads were not complete before it displayed the stats and end
sup with bogus values for the number of trials. It doesn't seem to
impact the rollout though. If you add up the numbers in the column they
do seem to be okay (at least that was what I had observed previously)

Michael Petch 
CApp::Sysware Consulting Ltd. 
OpenPGP FingerPrint=D81C 6A0D 987E 7DA5 3219 6715 466A 2ACE 5CAE 3304 

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