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Posted to issues@commons.apache.org by "Sébastien Brisard (Issue Comment Edited JIRA)" <ji...@apache.org> on 2011/12/03 19:26:39 UTC
[jira] [Issue Comment Edited] (MATH-699)
inverseCumulativeDistribution fails with cumulative distribution having a
plateau
[ https://issues.apache.org/jira/browse/MATH-699?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13162169#comment-13162169 ]
Sébastien Brisard edited comment on MATH-699 at 12/3/11 6:25 PM:
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New implementation (+ unit tests) committed in {{r1209942}}. {{getDomainLowerBound(double)}}, {{getDomainUpperBound(double)}} and {{getInitialDomain(double p)}} have now become superfluous: removed in {{r1209963}}.
The same kind of approach might probably be adopted for {{IntegerDistribution}}. I suggest we look into it before we resolve this issue.
was (Author: celestin):
New implementation (+ unit tests) committed in {{r1209942}}. {{getDomainLowerBound(double)}}, {{getDomainUpperBound(double)}} and {{getInitialDomain(double p)}} have now become superfluous.
> 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: 2.2
> Reporter: Sébastien Brisard
> Assignee: Sébastien Brisard
> Priority: Minor
> Fix For: 3.0
>
> 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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