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fffej/gist:140556

Created July 4, 2009 12:46
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gistfile1.clj
(defn beam-search
"Search highest scoring states first until goal is reached"
[start goal? successors cost-fn beam-width]
(tree-search (list start) goal? successors
(fn [old new]
(let [sorted ((sorter cost-fn) old new)]
(if (> beam-width (count sorted))
sorted
(take beam-width sorted))))))
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