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Posted to issues@commons.apache.org by "Gilles (JIRA)" <ji...@apache.org> on 2016/03/30 16:52:25 UTC

[jira] [Commented] (MATH-1124) Instances of AbstractRealDistribution require a random generator.

    [ https://issues.apache.org/jira/browse/MATH-1124?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15218080#comment-15218080 ] 

Gilles commented on MATH-1124:
------------------------------

Issue is fixed in branch "feature-MATH-1158".


> Instances of AbstractRealDistribution require a random generator.
> -----------------------------------------------------------------
>
>                 Key: MATH-1124
>                 URL: https://issues.apache.org/jira/browse/MATH-1124
>             Project: Commons Math
>          Issue Type: Bug
>            Reporter: Ajo Fod
>
> A couple of observations:
> ... The default random generator takes a while to instantiate. 
> ... Many functions of these distributions don't require a random generator. Generally speaking only sampling requires it.
> So, why force the default constructor to initialize with a new random generator ... why not use a global generic or simple generator? 
> Or do away with random generator except for sampling?
> This issue was observed with the TDistribution class , but it is probably applicable to many classes as well. 



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