# API for probabilities.finite-distributions
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by Konrad Hinsen

### clojure-contrib is now deprecated

clojure-contrib is no longer being developed or maintained.

Rather than a single, monolithic, contributions library, Clojure now has
a set of separate libraries for each unit of functionality. The libraries
are in the Clojure GitHub organization at
https://github.com/clojure.
API documentation of the libraries can be found at
http://clojure.github.io.

If you're looking for a specific function or namespace from the old
clojure-contrib, see
"Where Did Clojure.Contrib Go".

Full namespace name:

clojure.contrib.probabilities.finite-distributions
## Overview

Finite probability distributions
This library defines a monad for combining finite probability
distributions.

## Public Variables and Functions

## certainly

function
This library, clojure-contrib, is deprecated. See here for more information.
Usage: (certainly v)

Returns a distribution in which the single value v has probability 1.

Source

## choose

function
This library, clojure-contrib, is deprecated. See here for more information.
Usage: (choose & choices)

Construct a distribution from an explicit list of probabilities
and values. They are given in the form of a vector of probability-value
pairs. In the last pair, the probability can be given by the keyword
:else, which stands for 1 minus the total of the other probabilities.

Source

## cond-dist-m

var
This library, clojure-contrib, is deprecated. See here for more information.
Variant of the dist monad that can handle undefined values.

Source

## cond-prob

function
This library, clojure-contrib, is deprecated. See here for more information.
Usage: (cond-prob pred dist)

Returns the conditional probability for the values in dist that satisfy
the predicate pred.

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## dist-m

var
This library, clojure-contrib, is deprecated. See here for more information.
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.

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## join-with

function
This library, clojure-contrib, is deprecated. See here for more information.
Usage: (join-with f dist1 dist2)

Returns the distribution of (f x y) with x from dist1 and y from dist2.

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## make-distribution

function
This library, clojure-contrib, is deprecated. See here for more information.
Usage: (make-distribution coll f)

Returns the distribution in which each element x of the collection
has a probability proportional to (f x)

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## normalize

function
This library, clojure-contrib, is deprecated. See here for more information.
Usage: (normalize weights)

Convert a weight map (e.g. a map of counter values) to a distribution
by multiplying with a normalization factor. If the map has a key
:total, its value is assumed to be the sum over all the other values and
it is used for normalization. Otherwise, the sum is calculated
explicitly. The :total key is removed from the resulting distribution.

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## prob

function
This library, clojure-contrib, is deprecated. See here for more information.
Usage: (prob pred dist)

Return the probability that the predicate pred is satisfied in the
distribution dist, i.e. the sum of the probabilities of the values
that satisfy pred.

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function
This library, clojure-contrib, is deprecated. See here for more information.
Usage: (uniform coll)

Return a distribution in which each of the elements of coll
has the same probability.

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## zipf

function
This library, clojure-contrib, is deprecated. See here for more information.
Usage: (zipf s n)

Returns the Zipf distribution in which the numbers k=1..n have
probabilities proportional to 1/k^s.

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