From: Christopher Rosin <[EMAIL PROTECTED]>
Christopher, Thanks for your explanation of greenpeep!
<megasnippage>
> - Biasing playouts by patterns is much better than unbiased playouts
> - Playouts using self-play patterns together with MoGo-style move
> preferences (favor defensive moves and captures, as well as local
> moves biased by the self-play patterns, before resorting to a global
> move biased by patterns) yield much better results than just using
> the patterns by themselves globally.
> But I think that there is a lot of room for improvement here. The
> fact that it is possible to improve on the patterns by forcing additional
> simple preferences like captures, means the patterns are certainly not
> as good as they could be.
It might be helpful to augment patterns with topological information. A
capture is a pattern for an empty space adjacent to one or more strings
which have exactly one liberty. Such captures may be counterindicated if
the resultant shape is a snapback - a string with more than one stone, and
only one liberty. There are patterns for killing points of enclosed groups
which have only one eyespace; these points are less worthwhile if the group
has more than one eyespace.
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