> Attempting to maximize the score is not compatible with being a > strong engine. If you want a dan level engine it is maximizing > win-probability.

If you narrow it down such that komi 25.5, 27.5, and 29.5 give a black win with 63% to 67% probability, but komi 31.5 jumps to black only winning 46%, and komi 33.5 gives black only 43%, then I think we can score the position as black is ahead by 31pts. If, on this number of playouts, the MCTS program is 3d, then I think it is reasonable to say this is a 3-dan estimate of the score. (Of course, we used perhaps 10 times the number of playouts to turn a 3-dan player into a 3-dan score-estimator.) Darren >> Sticking with MCTS, you'd have to use komi adjustments: first find >> two extreme values that give each side a win, then use a >> binary-search-like algorithm to narrow it down until you find the >> correct value for komi for that position. This will take approx 10 >> times longer than normal MCTS, for the same strength level. >> >> (I'm not sure if this is what Pachi is doing?) _______________________________________________ Computer-go mailing list Computer-go@computer-go.org http://computer-go.org/mailman/listinfo/computer-go