The factorial of 81 is about 10^140. The number of legal positions may be some roots of that. It's still a huge number. The number of simulations used in UCT grograms is several hundred thousand, which is tiny compared to the total possible number of plays. How can they still be so successful? I think the only explanation is that the evaluation values (at least for MC) is highly structured. The question needed to answer is that is the scale of this structure proportional to nxn? (n is the board length.) If it is, it's very hopeful for computer Go in 19x19 using UCT-MC approach. Daniel Liu ________________________________________________________________________ AOL now offers free email to everyone. Find out more about what's free from AOL at AOL.com.
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