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1.2.3-SNAPSHOT permalink

1.2.3-SNAPSHOT

permute

If provided a single argument, returns a permuted version of the
given collection. (perm x) is the same as (sample x).

If provided two arguments, returns two lists that are permutations
across the given collections. In other words, each of the new collections
will contain elements from both of the given collections. Useful for
permutation tests or randomization tests.

Examples:

(permute (range 10))
(permute (range 10) (range 10 20))

0 Examples top

Source incanter/stats.clj:1875 top

(defn permute
" If provided a single argument, returns a permuted version of the
  given collection. (perm x) is the same as (sample x).

  If provided two arguments, returns two lists that are permutations
  across the given collections. In other words, each of the new collections
  will contain elements from both of the given collections. Useful for
  permutation tests or randomization tests.

  Examples:

    (permute (range 10))
    (permute (range 10) (range 10 20))


"
  ([x]
    (sample x))

  ([x y]
   (let [n1 (count x)
         samp (sample (concat x y) :replacement false)
         new-x (take n1 samp)
         new-y (drop n1 samp)]
     (list new-x new-y))))

Vars in incanter.stats/permute: defn let list

Used in 0 other vars

Comments top

1 comment(s) for permute.

laughingboy

link

Typo in documentation (perm x) should be (permute x)

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