Hi, >Perhaps I am oversimplifying, but if I understand correctly, MoGo >primarily gets its strength in 9x9 go by improving upon the random >simulations by preferring "good" moves over purely random moves during >the random game. Yet I have two results that seem to indicate that it's >not really that simple > >The first is that we have a purely random UCT version running on CGOS >(GoJin) and its rating seems to sit around 1640. But in the paper we are >told that the very first Mogo achieved almost the identical rating, yet Well, it's possible that the two programs have not the same speed.... this might make a big difference. >it already had some improvements, such as preferring large captures. Can >I conclude that those improvements to the random simulations actually >have no effect on the performance of the program? Surely there would be some effect, but might not be that much as expected. > >But even more confusing to me is that we've tried some simple >improvements to the random program that have had no effect. The ones >that I was certain would improve performance were versions that changed >random simulations so that moves near existing stones would be preferred >over stones placed too far away from the action. Many versions have been >tried, e.g., moves that must be adjacent to some other stone, moves that >must be no more than 1 space away from existing stones, etc. Surely on Well, I think we have tried some similar things. Personally I don't think this will lead to a significant improvement, and it is what the result shows in our experiment.
>average these are going to be better moves than purely random moves -- >or is this, indeed, the flaw in my logic? Shouldn't these versions >outperform the purely random versions? In almost every case the modified No not necessary. >version performed identical to the purely random version -- no worse and >no better -- at least according to the self tests. Does this really I dont know what do you mean by 'identical' and 'self tests' here. Intuitively it is not a good idea to have your program test against itself. I believe every change will bring something different, but sometimes not very significant. Yizao >sound right? > >-Richard >_______________________________________________ >computer-go mailing list >[email protected] >http://www.computer-go.org/mailman/listinfo/computer-go/ > _______________________________________________ computer-go mailing list [email protected] http://www.computer-go.org/mailman/listinfo/computer-go/
