Le 25/11/2009 à 12:39, Vlad Dumitrescu a écrit :
> 
> On Wed, Nov 25, 2009 at 12:04, Nick Wedd <n...@maproom.co.uk> wrote:
> > A program to play Hahn Go has no
> > reason to calculate probabilities, it should just make the biggest move it
> > can.
> 
> Ah, okay, now I understand your point of view. Thanks for explaining.
> 
> Making the largest move available is just one possible strategy to
> attain the goal of ending the game with the most points scored. A more
> general strategy is to weigh the moves' size with the risks they can
> backfire.
This is taken onto account in the tree.
If playing one move lead 10% of time to +10, and 90% to -20,
the resulting value is -17
(of course with the bot evaluation/playout)

> Evaluating the risks is probably just as difficult (or maybe more
> difficult) than evaluating a move's value (which is difficult enough),
> but IMHO just being greedy is not helping one's game. Might it be for
> this reason that MCTS doesn't show good results when trying to
> maximize score?
They don't try to maximise score, that's why they are not good at it :-)

Best regards
Alain
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