[Computer-go] Would a larger board (25x25) dramatically reduce AlphaGos skill?

2016-03-22 Thread Tom M
I suspect that even with a similarly large training sample for initialization that AlphaGo would suffer a major reduction in apparent skill level. The CNN would require many more layers of convolution; the valuation of positions would be much more uncertain; play in the corner, edges, and center

Re: [computer-go] May KGS bot tournament: full-sized boards, fast

2008-05-04 Thread Tom
From the website http://www.gokgs.com/tournInfo.jsp?id=380 and the fact that it hasn't started, I deduce that it starts at 1500 GMT, or about 40 minutes time. On Sun, 2008-05-04 at 11:00 +0100, Nick Wedd wrote: Reminder - it starts in a few hours (13:00 GMT), five hours after the time of

Re: [computer-go] Life and Death

2008-03-27 Thread Tom Cooper
I think that the original description of the position should have said 'killable' rather than 'dead', and that David missed the fact that it is White to move. At 08:06 27/03/2008, Hideki wrote: David Fotland: [EMAIL PROTECTED]: I just looked at this position and it looks like a win for black

Re: [computer-go] New scalability study progress report

2008-01-20 Thread Tom Cooper
This is very cool. As of 261 games played, I find it very difficult to guess whether the mogo curve is beginning to dramatically flatten, or will continue to rise steeply. I have a few questions. I can't see the cross table, I guess you haven't put it up yet? How do you decide the pairings?

Re: [computer-go] U. of Alberta bots vs. the Poker pros

2007-07-28 Thread Tom Cooper
At 02:58 28/07/2007, Arend wrote: On 7/26/07, chrilly mailto:[EMAIL PROTECTED][EMAIL PROTECTED] wrote: This is a remarkable result. I think poker is more difficult than Go and of course chess. I am as surprised by this statement as everyone else. Of course you have to develop some mixed

[computer-go] OT U. of Alberta bots vs. the Poker pros

2007-07-28 Thread Tom Cooper
At 18:20 26/07/2007, Jeff Nowakowski wrote: On Thu, 2007-07-26 at 18:14 +0200, chrilly wrote: Chess/Go... can be played in an autistic way. There is no need for an opponent model. Ah, an opponent model. Where's the poision? http://www.imdb.com/title/tt0093779/quotes#qt0250635 Too much

Re: [computer-go] U. of Alberta bots vs. the Poker pros

2007-07-28 Thread Tom Cooper
At 12:42 28/07/2007, you wrote: At 02:58 28/07/2007, Arend wrote: On 7/26/07, chrilly mailto:[EMAIL PROTECTED][EMAIL PROTECTED] wrote: This is a remarkable result. I think poker is more difficult than Go and of course chess. I am as surprised by this statement as everyone else. Of course

Re: [computer-go] 9x9 games wanted and the next big challenge

2007-07-09 Thread Tom Cooper
Yes. This number is strongly dependent on strength and board size I think. Very roughly speaking, you can argue as follows 1) in a 9x9 game, the weaker player has only 1/4 as many moves in which to throw away the handicap advantage (compared to 19x19). 2) weak players lose so many points

Re: [computer-go] creating a random position

2007-07-08 Thread Tom Cooper
At 21:54 08/07/2007, you wrote: I don't have such algorithm, you can count legal positions like: http://www.lysator.liu.se/~gunnar/legal.pike.txt Modifying it could provide some way select random position atleast for small boards. Ported that for java but not studied much of it yet,

Re: [computer-go] Re: 9x9 games wanted

2007-07-06 Thread Tom Cooper
It might be worth asking the administrators of some go servers if they would be prepared to give you copies of some games. At 17:09 06/07/2007, you wrote: I will play with Suzie at the forthcoming European Go championship in Villach/Austria some 9x9 demonstration matches against everybody

[computer-go] article in the Times

2007-06-30 Thread Tom Cooper
It isn't a very good article in my opinion, but for what it's worth. http://www.timesonline.co.uk/tol/comment/columnists/ben_macintyre/article2002699.ece ___ computer-go mailing list computer-go@computer-go.org

RE: [computer-go] Sylvain's results

2007-04-12 Thread Tom Cooper
There are multiple possible definitions of what it means for a player to be the same strength on two different sized boards. It is impossible to pit a 9x9 player against a 19x19 player. If two people use different definitions of 'same strength', they are bound to disagree about which size

Re: [computer-go] The dominance of search (Suzie v. GnuGo)

2007-04-11 Thread Tom Cooper
as well. Or maybe Chrilly will make a monster go machine even before that. Could somebody comment please on the likely usefulness of massively parallel machines to UCT-like algorithms. Thanks again. Tom. At 21:12 10/04/2007, you wrote: Hello, 2007/4/6, Tom Cooper mailto:[EMAIL PROTECTED][EMAIL

Re: [computer-go] The physics of Go playing strength.

2007-04-08 Thread Tom Cooper
Thanks dons for producing these fascinating results. I hope that when you have finished the study, you will show us not just this graph, but also the game results (number of wins) that it is derived from. At 02:05 08/04/2007, you wrote: A few weeks ago I announced that I was doing a long term

Re: [computer-go] The physics of Go playing strength.

2007-04-08 Thread Tom Cooper
The discussion here http://senseis.xmp.net/?EloRating suggests that the difference between beginners and top players in go is about 3000 ELO on a 19x19 board. This difference is very dependent on the board size. I can think of a naive argument that this difference should scale linearly with

Re: [computer-go] The dominance of search (Suzie v. GnuGo)

2007-04-06 Thread Tom Cooper
My guess is that the complexity of achieving a fixed standard of play (eg 1 dan) using a global alpha-beta or MC search is an exponential function of the board size. For this guess, I exclude algorithms that have a tactical or local component. If this guess is correct then, even if Moore's

Re: [computer-go] computer go documentation issues

2007-03-22 Thread Tom Cooper
I agree. The feel of sensei's and wikipedia are completely different. Most of the content on sensei's is too informal for wikipedia, and I think it would get deleted if it was put there, despite this content being very worthwhile. On the other hand, wikipedia is the ideal place for a short

Re: [computer-go] Useless moves in the endgame

2007-01-10 Thread Tom Cooper
At 16:20 09/01/2007, you wrote: i'd like to follow this up by saying that i'm interested to see if anyone has compared winning percentage in the following two situations: i) maximize probability of win ii) maximize probability of win until p_win 1-eps, then maximize total score among all

Re: [computer-go] Re: Interesting problem

2007-01-04 Thread Tom Cooper
At 23:17 03/01/2007, Don wrote: David, I thought of another way to put it which I think, in a way, defines the difference in the rule-sets. You are playing a game, and you think the opponent group is dead. But you are not 100 percent sure. What do you do? Chinese puts the emphasis on the

Re: [computer-go] When is Pass the best move?

2006-10-23 Thread Tom Cooper
At 01:54 23/10/2006, you wrote: There was a posting on this list with an example of a (contrived?) situation where sacrificing a pass-alive group is appropriate, in order to win a ko that is more valuable. Is even #1 100% admissible? Weston I must have missed this, and find it