Don Dailey: <[EMAIL PROTECTED]>: >On Tue, 2008-08-12 at 11:50 +0900, Darren Cook wrote: >> > Also, if you are down 8 or 9 stones, maximizing your winning chances is >> > still the right strategy, right? >> >> With MCTS algorithms the error margin is high at the start of the game, >> and low in the endgame. In a handicap game against a stronger opponent >> the assumption is that the weaker player will make more mistakes (i.e. >> has a higher error margin overall). But MCTS programs don't see it that >> way - their opponent model is the same strength as they are. So they >> choose a move that gives them 95% (+/- 20%) win (against themselves) >> instead of the better move that they only gives them a 90% (+/- 20%) win >> (against themselves). (I.e. I'm saying their error margin in the opening >> is much greater than the difference in their estimate of move values.) > >There could be something to that. > >Do you believe that they will play the 90% move if they are told they >are not really down 9 stones? > >I did a bunch of experiments and ALWAYS got a reduced wins when I faked >the komi. But there are a million ways to do this and I may not have >stumbled on the right way.
Mr. Okasaki, a strong amatur, tested MoGo with a 9 stones handicap game at winning rate around 50% by adjusting komi on each move and reported it played clearly stronger than others, say, on KGS and the cluster version at Paris. Hideki -- [EMAIL PROTECTED] (Kato) _______________________________________________ computer-go mailing list computer-go@computer-go.org http://www.computer-go.org/mailman/listinfo/computer-go/
