matthewleon / haskell-distribution

Haskell package for finite discrete probability distributions.

Haskell distribution package

distribution is a package for manipulating finite discrete probability distributions. It supports transformations of distributions, measurements and efficient sampling. Plotting distributions as bar charts is also possible using the related distribution-plot package.

Overview

The distribution package contains several modules:

• Data.Distribution.Core which defines distributions and combinators over distributions,
• Data.Distribution.Measure which includes measures such as probability, expectation and variance,
• Data.Distribution.Sample which implements Walker's Alias method for efficiently sampling random values from distributions.

In addition, some domain specific distributions and functions are proposed by default:

• Data.Distribution.Domain.Dice defines dice and functions on dice.
• Data.Distribution.Domain.Coin defines the same for coins.
• Data.Distribution.Aggregator contains functions for transforming distributions to cumulative distributions and other useful methods.

Each module and each function is extensively documented.

Related packages

See the distribution-plot package for plotting distributions to files. This package is also available on GitHub.

License

Copyright 2014 Romain Edelmann

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.