I still have a UCB term, but it's probably because I depend more on Many Face's move generator. I have a rave term, but it's contribution is small. It seems that if the RAVE term is large, then Rave creates enough exploration by itself.
David > -----Original Message----- > From: [email protected] [mailto:computer-go- > [email protected]] On Behalf Of Petr Baudis > Sent: Friday, December 31, 2010 6:27 PM > To: [email protected] > Subject: Re: [Computer-go] Fwd: News on Tromp-Cook ? > > Hi! > > On Fri, Dec 31, 2010 at 07:02:35PM +0800, Fuming Wang wrote: > > Now I know Remi is the first to utilize MCTS. Guess I need to read > papers > > more carefully. I do have a question though. I thought UCT is the > foundation > > of the current strong programs, I know that a RAVE term is added to the > > original UCB term, i.e. sqrt(t_total/t_i), but the UCB term is still > there > > right? Could you eleborate a bit on why do you say "UCT is not good for > Go"? > > This is quite contradictory to a lot of material on the internet > regarding > > the lastest bread of go programs. > > Most likely not all (e.g. it seems not ManyFaces?), but at least many > programs use exploration coefficients that are either zero or negligibly > small. > > In Pachi, I'm using 0 as the exploration coefficient in the end, it > seems to work the best. But this probably also depends on the fact that > I have slight forceful randomization of playouts. 0.02 can work well on > 9x9 too, but it also depends on the priors, etc. > > Overally, it is a question of the overall tuning of the program. But > right now, reasonably strong play with only RAVE and no UCB1 is > certainly possible. > > -- > Petr "Pasky" Baudis > Computer science education cannot make an expert programmer any more > than studying brushes and pigment can make an expert painter. --esr > _______________________________________________ > Computer-go mailing list > [email protected] > http://dvandva.org/cgi-bin/mailman/listinfo/computer-go _______________________________________________ Computer-go mailing list [email protected] http://dvandva.org/cgi-bin/mailman/listinfo/computer-go
