[jira] [Resolved] (MATH-703) Splitting up the distribution hierarchy

["Christian Winter (Resolved) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MATH-703?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Christian Winter resolved MATH-703.
-----------------------------------

    Resolution: Fixed
    
> Splitting up the distribution hierarchy
> ---------------------------------------
>
>                 Key: MATH-703
>                 URL: https://issues.apache.org/jira/browse/MATH-703
>             Project: Commons Math
>          Issue Type: Improvement
>    Affects Versions: 2.2
>            Reporter: Christian Winter
>            Priority: Minor
>             Fix For: 3.0
>
>         Attachments: MATH-703_patch.zip, MATH-703_patch2.zip
>
>
> As discussed on the mailing list (http://apache-commons.680414.n4.nabble.com/math-Distributions-over-sample-spaces-other-than-R-tp3931349p3931349.html), the distribution interfaces should be restructured.
> The most important point is to create one root interface for each domain. There should *not* be a common super-interace because different domains require different functionality. Additionally, a super-inferface would require to parametrize the domain which makes things more complicated (e.g., "double" would have to be replaced by "Double"). Currently, Commons Math supports distributions with real domain and distributions with integer domain. Thus there will be the interfaces RealDistribution and IntegerDistribution.
> Another point is to drop the special cases of distributions with real domain in order to simplify the structure. There won't be an interface for absolutely continuous distributions, and there won't be an interface for discrete distributions on the real domain. All the functionality required by the special cases can be defined in RealDistribution.

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