Re: Requested gnubgautorcTRUMP THIS FOR NONSENSE
I now have two versions of GNU open on my computer and after a lot of trial and
error, clicking around etc, but changing no basic settings, I seem to have
achieved getting one each to reproduce the differing results I got earlier.
Other plys may be producing nonsense, but at least it's consistent nonsense.
I see these inconsistencies as a huge problem.
GNU Backgammon Position ID: gwEAQCoAAAAAAA
Match ID : cAmgACAAGAAA
+13-14-15-16-17-18------19-20-21-22-23-24-+ O: wwwcars
| | | O O | OOO 2 points
| | | O O | OO
| | | | OO
| | | | OO
| | | | OO
v| |BAR| | 5 point match (Cube: 1)
| | | | XX
| | | | XX
| | | | XX
| | | | XX On roll
| | | X X X X | XXX 3 points
+12-11-10--9--8--7-------6--5--4--3--2--1-+ X: Anterico
Cube analysis
3-ply cubeless equity +0.386 (Money: +0.386)
0.693 0.000 0.000 - 0.307 0.000 0.000
Cubeful equities:
1. No double +0.599
2. Double, pass +1.000 ( +0.401)
3. Double, take +0.541 ( -0.059)
Proper cube action: No double, take (12.8%)
Rollout details:
Centered 1-cube:
0.728 0.000 0.000 - 0.272 0.000 0.000 CL +0.455 CF +0.647
[0.000 0.000 0.000 - 0.000 0.000 0.000 CL 0.001 CF 0.001]
Player wwwcars owns 2-cube:
0.732 0.000 0.000 - 0.268 0.000 0.000 CL +1.529 CF +0.847
[0.000 0.000 0.000 - 0.000 0.000 0.000 CL 0.000 CF 0.001]
Full cubeful rollout with var.redn.
20736 games, Mersenne Twister dice gen. with seed 867000880 and quasi-random
dice
Play: world class 2-ply cubeful prune [world class]
keep the first 0 0-ply moves and up to 8 more moves within equity 0.16
Skip pruning for 1-ply moves.
Cube: 2-ply cubeful prune [world class]
GNU Backgammon Position ID: gwEAQCoAAAAAAA
Match ID : cAmgACAAGAAA
+13-14-15-16-17-18------19-20-21-22-23-24-+ O: gnubg
| | | O O | OOO 2 points
| | | O O | OO
| | | | OO
| | | | OO
| | | | OO
v| |BAR| | 5 point match (Cube: 1)
| | | | XX
| | | | XX
| | | | XX
| | | | XX On roll
| | | X X X X | XXX 3 points
+12-11-10--9--8--7-------6--5--4--3--2--1-+ X: Neil
Cube analysis
3-ply cubeless equity +0.420 (Money: +0.420)
0.710 0.000 0.000 - 0.290 0.000 0.000
Cubeful equities:
1. Double, take +0.677
2. Double, pass +1.000 ( +0.323)
3. No double +0.599 ( -0.077)
Proper cube action: Double, take
Rollout details:
Centered 1-cube:
0.728 0.000 0.000 - 0.272 0.000 0.000 CL +0.455 CF +0.647
[0.000 0.000 0.000 - 0.000 0.000 0.000 CL 0.001 CF 0.001]
Player gnubg owns 2-cube:
0.735 0.000 0.000 - 0.265 0.000 0.000 CL +1.549 CF +0.877
[0.000 0.000 0.000 - 0.000 0.000 0.000 CL 0.000 CF 0.000]
Full cubeful rollout with var.redn.
20736 games, Mersenne Twister dice gen. with seed 867000880 and quasi-random
dice
Play: world class 2-ply cubeful prune [world class]
keep the first 0 0-ply moves and up to 8 more moves within equity 0.16
Skip pruning for 1-ply moves.
Cube: 2-ply cubeful prune [world class]
----- Original Message -----
From: Michael Petch
To: Neil Robins
Cc: [email protected]
Sent: Thursday, August 27, 2009 9:54 PM
Subject: Re: Requested gnubgautorc
Interestingly enough, after doing some experiments (with evaluations, not
rollouts), I am unsure there is a "bug" here. The position seems very volatile
if you factor in potential future cube decisions. It may just be a fluke that 1
and 2 ply got it right (It didn't look deep enough to see future cube actions).
I'd like to hear feedback from others on this.
With that in mind I asked GnuBG to tell me (as an experiment) what the result
would be if the checker play evaluations on cube decisions were cubeless, and
except for 0 ply everything came out Double/take.
On a side note, and I am wondering how other people feel about this. On the
Hint screen (or on analysis pane for analyzed positions) you have the
"0/1/2/3/4" buttons Each corresponds to a "cubeful N play evaluation". I have
always found this not be be very intuitive. My expectation would be that
"0/1/2/3/4" would use the existing settings that you can see with "..." and
simply change the ply level for cube and checker (and keep all other settings
like cubeful/cubeless/noise/filter the same). I found myself wanting to do
cubeless checker play evaluations on cube decisions and I kept having to click
"..." change the ply level manually, click OK, then hit the Eval button. My
view is that if I hit those buttons "0/1/2/3/4" I want to see the difference at
each ply level with respect to my current eval settings.
Michael
On 27/08/09 2:24 PM, "Neil Robins" <[email protected]> wrote:
I have same result as initially on a different computer with 20090612
version.
----- Original Message -----
From: Michael Petch <mailto:[email protected]>
To: Neil Robins <mailto:[email protected]>
Sent: Thursday, August 27, 2009 9:05 PM
Subject: Re: Requested gnubgautorc
Something is very bizarre. I'm going to try some experiments with some
internal features of Gnubg turned off. But as you suggested in your post,
exiting Gnubg and restarting alters the outcomes. but then I have found
sometimes all plies start giving the right output.
On 27/08/09 1:43 PM, "Neil Robins" <[email protected]> wrote:
Strangely, I am yet to see a problem with any other position.
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