Replacement of the HasDensity<P>-interface with a "double density(double
x)"-method on the AbstractContinuousDistribution
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Key: MATH-332
URL: https://issues.apache.org/jira/browse/MATH-332
Project: Commons Math
Issue Type: Improvement
Reporter: Mikkel Meyer Andersen
Attachments: patch-all
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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