UCT-MC performed better on CGOS is  also due to the fact that the depth of the 
game and the branch factor is much larger.
 
 
-----Original Message-----
From: [EMAIL PROTECTED]
To: [email protected]
Sent: Mon, 19 Mar 2007 9:00 AM
Subject: [computer-go] UCT performance


I'm reading the paper by Kocsis and Szepesvari. From Figure 2 the significant 
imporvement of UCT over alpha-beta happens when the error tolerance is about 
10%, where the improvement is a factor of 100. From the results of CGOS UCT-MC 
performed seemly better than this. It's propabaly due to the reason that in 
above paper they used randomly generated values. On the other hand MC score and 
the Go game values are more structured. Thus, UCT-MC performed better. But 
anyway the general trend of Fig.2 is probably true. 
 
The better a Go player is, the smaller the error tolerance is. In some critical 
situation, such as ladders, the error tolarance is almost zero. At top human 
player level the error tolerance is < 1%?
 
 
Daniel Liu    


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