Re: [computer-go] Tweak to MCTS selection criterion

2009-06-07 Thread Christian Nentwich
Jun 2009 5:07 pm Subject: Re: [computer-go] Tweak to MCTS selection criterion Another strategy to be considered is to not allow the thinking to cease until the maximum win rate and the maximum visit count agree on the same move. Obviously this requires some extra code to make

Re: [computer-go] Tweak to MCTS selection criterion

2009-06-07 Thread Magnus Persson
I think all principles I use in the time management for Valkyria came up in this thread more or less. 1) Valkyria selects move that has been searched the most. 2) It is given a base time for example 20 seconds early on on 9x9 CGOS 3) The base time is adjusted down if the program is winning

Re: [computer-go] Tweak to MCTS selection criterion

2009-06-07 Thread Don Dailey
2009/6/6 dhillism...@netscape.net I had the early stop rule and didn't know if anyone else had thought of it. But I never considered the pebbles rule, which somewhat conflicts with the early stop rule. But as I layed out above I think you could do both. This is probably one of those

RE: [computer-go] Tweak to MCTS selection criterion

2009-06-07 Thread David Fotland
To: computer-go computer-go@computer-go.org mailto:computer-go@computer-go.org Sent: Sat, 6 Jun 2009 5:07 pm Subject: Re: [computer-go] Tweak to MCTS selection criterion Another strategy to be considered is to not allow the thinking to cease until the maximum win rate

[computer-go] Tweak to MCTS selection criterion

2009-06-07 Thread Brian Sheppard
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

[computer-go] Tweak to MCTS selection criterion

2009-06-06 Thread Brian Sheppard
When a UCT search is completed, the usual selection criterion is choose the move that has the most trials. This is more stable than choosing the move that has the highest percentage of wins, since it is possible to have an unreliably high percentage if the number of trials is small. I have a

Re: [computer-go] Tweak to MCTS selection criterion

2009-06-06 Thread Michael Williams
Another strategy to be considered is to not allow the thinking to cease until the maximum win rate and the maximum visit count agree on the same move. Obviously this requires some extra code to make sure you don't lose on time, etc. Brian Sheppard wrote: When a UCT search is completed, the

Re: [computer-go] Tweak to MCTS selection criterion

2009-06-06 Thread Don Dailey
On Sat, Jun 6, 2009 at 5:07 PM, Michael Williams michaelwilliam...@gmail.com wrote: Another strategy to be considered is to not allow the thinking to cease until the maximum win rate and the maximum visit count agree on the same move. Obviously this requires some extra code to make sure you

Re: [computer-go] Tweak to MCTS selection criterion

2009-06-06 Thread dhillismail
allows the search to be stopped early. It can save a lot of time for forced moves. - Dave Hillis -Original Message- From: Michael Williams michaelwilliam...@gmail.com To: computer-go computer-go@computer-go.org Sent: Sat, 6 Jun 2009 5:07 pm Subject: Re: [computer-go] Tweak to MCTS