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From "Christian Winter (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MATH-699) inverseCumulativeDistribution fails with cumulative distribution having a plateau
Date Wed, 09 Nov 2011 21:41:52 GMT

    [ https://issues.apache.org/jira/browse/MATH-699?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13147315#comment-13147315
] 

Christian Winter commented on MATH-699:
---------------------------------------

The Javadoc of {{getSupportLowerBound()}}/{{getSupportUpperBound()}} in fact needs to be sharpened.
I didn't see this before. If I didn't overlook anything, all current implementations already
return the best bounds.

Regarding the bracketing issue there are now several ideas (thanks for the Chebyshev idea,
Phil). But I don't have a preference for a particular solution which can be built from these
ideas. Thus, Sébastien, just choose a strategy which you consider to be beneficial.
                
> inverseCumulativeDistribution fails with cumulative distribution having a plateau
> ---------------------------------------------------------------------------------
>
>                 Key: MATH-699
>                 URL: https://issues.apache.org/jira/browse/MATH-699
>             Project: Commons Math
>          Issue Type: Bug
>    Affects Versions: 3.0
>            Reporter: Sébastien Brisard
>            Assignee: Sébastien Brisard
>            Priority: Minor
>         Attachments: AbstractContinuousDistributionTest.java
>
>
> This bug report follows MATH-692. The attached unit test fails. As required by the definition
in MATH-692, the lower-bound of the interval on which the cdf is constant should be returned.
This is not so at the moment.

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