Looking again, I was confusing a followup post with the original description of 
the pebbles rule. I have not tested this exact rule. Sorry for my confusion.

- Dave Hillis


-----Original Message-----
From: dhillism...@netscape.net
To: computer-go@computer-go.org
Sent: Sun, 7 Jun 2009 9:39 pm
Subject: Re: [computer-go] Tweak to MCTS selection criterion


The policy is only risk free on a per-move basis. For the game as a whole, 
using more time on one move means there will be less time available for later 
moves. Back when I tested this rule in my own program, I didn't see any 
significant difference in strength. YMMV.

- Dave Hillis

-----Original Message-----
From: Brian Sheppard <sheppar...@aol.com>
To: computer-go@computer-go.org
Sent: Sun, 7 Jun 2009 6:05 pm
Subject: [computer-go] Tweak to MCTS selection criterion



> check if overtaking the leading move is mathematically impossible?

Yes. Pebbles does this.

Please note that the discussion has veered into time control policy,
which is not the subject of the original post.

The original post discusses move selection policy: when your program
stops, for whatever reason, which move should it select? Pebbles' policy
is to select the move that has the most wins, rather than the most trials.

Pebbles policy is a risk-free improvement over the standard policy
of selecting the move that has the most trials.

Brian

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