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[Bug-gnubg] Bug(?!): Rollouts involving noise
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[Bug-gnubg] Bug(?!): Rollouts involving noise |
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Mon, 11 Aug 2008 13:13:38 +0200 |
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Hi folks,
I'm forwarding an e-mail by Bob Koca (he also tried to show me this
behavior of gnubg whwn we met in Monte Calro):
***************************************************
Here is a summary of some of the weird behavior I?ve noticed when
doing rollouts involving noise. I suspect it may just be an issue of
something being done in a wrong order. I used a 1 point match, zero
skill position so the weakening of either player and the clicking of
cubeful on or off should not matter but it does. It is the latest
build which I just downloaded today.
In particular:
Comparing 1A to 1C shows that if cubeful is on then weakening one
player can influence the result.
Comparing 2C to 2D shows that if cubeful is off then determinsitc or
nondeterministic noise makes a difference. However this is not the
case if cubeful is on as can be seen from comparing 1C to 1D.
On a related issue it would be nice for the rollout results to give
more data. For example
Whether the databases were being used, what type of noise was used,
what MEQ was used. Basically every setting that is alterable seems
like it should be included in the summary.
Thanks for any help, Bob Koca
Player 1 = bobk Orange checkers on bottom
Player 0 = gnubg White checkers on top
Rollout of 15 on ace vs. 15 on ace 1 point match with various settings:
All use no variance reduction, 1296 trials, quasi random dice, no
bearoff database, player 0 on roll, and seed = 1,000,000
1) Using CUBEFUL ON
A) expert with cubeful eval checked vs expert with cubeful eval checked
win% of .658951 and s.d of .013173
B) expert with cubeful eval off vs expert with cubeful eval off
same as A
C) advanced (.015 det noise and cubeful eval) vs expert
win % of .592607 and s.d of .011854
***************************************************
Ciao
Achim
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