-interface with a "double density(double x)"-method on the AbstractContinuousDistribution
[ https://issues.apache.org/jira/browse/MATH-332?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Phil Steitz resolved MATH-332.
------------------------------
Resolution: Fixed
Many thanks for the patch. A slightly modified version has been committed in r924362. In addition to adding the missing density functions, this revision extends the continuous distribution test framework to test density functions. The HasDensity interface is deprecated, but not removed.
> Replacement of the HasDensity<P>-interface with a "double density(double x)"-method on the AbstractContinuousDistribution
> -------------------------------------------------------------------------------------------------------------------------
>
> Key: MATH-332
> URL: https://issues.apache.org/jira/browse/MATH-332
> Project: Commons Math
> Issue Type: Improvement
> Reporter: Mikkel Meyer Andersen
> Fix For: 2.1
>
> Attachments: patch-all
>
> Original Estimate: 3h
> Remaining Estimate: 3h
>
> Removed the HasDensity<P>-interface and replaced it with a "public double density(double x)"-method on the AbstractContinuousDistribution-class (it throws an exception as default if the classes don't override the method).
> Implemented density-functions for the F-distribution, t-distribution, Weibull distribution, and Cauchy distribution (the only continuous ones without a density implemented).
> A side-effect is that ChiSquaredDistributionImpl now uses an internal GammaDistributionImpl instead of a GammaDistribution. This is the only "major" change.
> This improvement replaces https://issues.apache.org/jira/browse/MATH-330 (density implementation for the F-distribution) and https://issues.apache.org/jira/browse/MATH-331 (density implementation for the other three distributions).
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