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https://issues.apache.org/jira/browse/MATH-968?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13641496#comment-13641496 ]

Thomas Neidhart edited comment on MATH-968 at 4/25/13 6:39 AM:

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Please find attached a patch that adds support for the Pareto distribution.

The test values have been created with R (cran module VGAM contains a pareto distribution), although there seems to be a small bug in the module as the density for x == scale/k is returned as 0.

Looking at the wikipedia page or wolfram (

http://reference.wolfram.com/mathematica/ref/ParetoDistribution.html) you can see that for this case the density should be <> 0. So I adapted the test values for this case.

was (Author: tn):

Please find attached a patch that add support for the Pareto distribution.

The test values have been created with R (cran modules VGAM contains a pareto distribution), although there seems to be a small bug in the module as the density for x == scale/k is returned as 0.

Looking at the wikipedia page or wolfram (

http://reference.wolfram.com/mathematica/ref/ParetoDistribution.html) you can see that for this case the density should be <> 0. So I adapted the test values for this case.

> Pareto distribution is missing

> ------------------------------

>

> Key: MATH-968

> URL:

https://issues.apache.org/jira/browse/MATH-968> Project: Commons Math

> Issue Type: New Feature

> Affects Versions: 3.2

> Reporter: Alex Gryzlov

> Priority: Minor

> Attachments: MATH-968.zip

>

>

> Seems that org.apache.commons.math3.distribution lacks a ParetoDistribution for some reason. This is a real common type of distribution, so providing it would be very nice!

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