[Computer-go] Heavy playouts and randomness

David Fotland fotland at smart-games.com
Sun Jun 27 09:39:47 PDT 2010

Maintaining the patterns is trivial.  Using them is expensive, if the
patterns have weights, since you have to build a probability distribution
over the full board.  Crazystone divides the board into rows and columns to
speed this up.  I do something different in Many Faces.  I'm not sure what
pachi and zen do.


>I guess moving to whole board patterns doesn't actually add much CPU,
>because they are only 3x3: a list of matching patterns can be
>maintained, and after each move only a few points need to be considered
>for new pattern matches.


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