dist-m(clojure.contrib.probabilities.finite-distributions)

Monad describing computations on fuzzy quantities, represented by a finite probability distribution for the possible values. A distribution is represented by a map from values to probabilities.

; clojure/contrib/probabilities/finite_distributions.clj:28
(defmonad dist-m
  [m-result (fn m-result-dist [v]
	      {v 1})
   m-bind   (fn m-bind-dist [mv f]
	      (letfn [(add-prob [dist [x p]]
		         (assoc dist x (+ (get dist x 0) p)))]
	        (reduce add-prob {}
		        (for [[x p] mv  [y q] (f x)]
			  [y (* q p)]))))
   ])

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