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  1. Commons Math
  2. MATH-332

Replacement of the HasDensity<P>-interface with a "double density(double x)"-method on the AbstractContinuousDistribution

    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 2.1
    • Labels:
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      Description

      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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        1. patch-all
          18 kB
          Mikkel Meyer Andersen

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            • Assignee:
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              Reporter:
              mikl Mikkel Meyer Andersen
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