[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Bug-gnubg] New build of GNU Backgammon for Windows available!
From: |
nedc |
Subject: |
Re: [Bug-gnubg] New build of GNU Backgammon for Windows available! |
Date: |
Tue, 26 Oct 2004 11:24:53 -0700 |
I post here a reproducible case where 0.15 rollouts
perform significantly poorer than 0.14. I have 2 .sgf
files with the rollout results if you would like me to
send them. I say poorer because it is essentially a
one-sided checkerplay position.
If I get time I could also try this with a larger search
space for the pruning net but I wanted to have identical
settings for both nets initially.
I rolled this out with 0.14 2-ply and the wins were 75.1%
with gammon losses at least 4% lower, and the standard
error was 0.001 wins, and 0.006 cubeful (one-third the
error of the 0.15 version) after only 600+ trials. I was
unable to save that 2-ply rollout result, so I am
repeating the 0.14 rollout today and could forward the
.sgf if you like.
Here is a discussion thread at GOL about this position
with several additional rollout results including 0-ply
GNU and Snowie 4.1.
http://www.gammonline.com/members/board/config.cgi?read=85765
My general observation after several rollouts with 0.15 is
that the error rates for cubeful equities are taking
several times more trials to converge than the 0.14 net.
This is a general observation as an experienced user, not
a claim as a result of any scientific study.
While we can all enjoy the immediate benefits of match
analysis that is twice as fast, it could just be that it
will take us some time to rediscover the ideal rollout
settings with the 0.15 version.
--Ned
On Sat, 16 Oct 2004 12:42:24 +1300
Joseph Heled <address@hidden> wrote:
... Please post a reproducible
case, with a smaller n as possible, full setting, and
seed ...
-Joseph
5 prime redouble rollout_prune_2ply.txt
Description: Text document
Re: [Bug-gnubg] New build of GNU Backgammon for Windows available!, nedc, 2004/10/15
Re: [Bug-gnubg] New build of GNU Backgammon for Windows available!, Øystein Johansen, 2004/10/16