On Tue, 4 Mar 2008, Magnus Persson wrote:
But here you are missing the point that close to 0% winning probability means that it cannot win against random play. The opponent could lose only by killing his own groups.
I don't know why you (and Don) keep bringing up the 0% against random play ... I am talking about a (typical) situation in the endgame where best play (as seen from the program) leads to a sure 0.5 pt loss. Many MC programs will make unreasonable attempts of winning by chosing a line that shows a possible win (10 pt) if the opponent makes a (stupid) mistake. Instead they should go for the (supposedly sure) 0.5 pt loss, because the opponent will much more likely make the 1pt mistake, and not the 10 pt mistake. The problem is that the likelihood of your opponent making a mistake is hard to determine by the UCT (MC) playouts. I guess one needs to use the meta information that is is more likely to make a small mistake than to make a big one. This is not specific to any particular opponent. Christoph _______________________________________________ computer-go mailing list computer-go@computer-go.org http://www.computer-go.org/mailman/listinfo/computer-go/
