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From Sébastien Brisard (Commented) (JIRA) <j...@apache.org>
Subject [jira] [Commented] (MATH-699) inverseCumulativeDistribution fails with cumulative distribution having a plateau
Date Sat, 26 Nov 2011 05:19:40 GMT

    [ https://issues.apache.org/jira/browse/MATH-699?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13157369#comment-13157369
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Sébastien Brisard commented on MATH-699:
----------------------------------------

{quote}
Great observation by Christian - we can switch on plateau detection iff isSupportConnected
is false. Otherwise, I would say the "new" implementation is good to go.
{quote}
Yes, it is indeed a very neat way to proceed. I'll make the changes once Christian's patch
for MATH-703 is committed.

{quote}
I would also be happy to celebrate dropping all of the getXxx(p) methods, which are not needed
any more.
{quote}
Good! So I do not need to post on the mailing list on this issue?

{quote}
We can all thank Mikkel, btw, for suggesting a while back that we add the numerical mean,
variance and connected support properties. Came in very handy here!
{quote}
I would also thank the guy who suggested Chebyshev's inequality (I wonder who that is ;)).
Overall, I personnally enjoyed working on this issue, as it truly was team work.
Sébastien
                
> 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, inv-cum-new-impl.zip
>
>
> 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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