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https://issues.apache.org/jira/browse/MATH-1421?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gilles resolved MATH-1421.
--------------------------
Resolution: Fixed
Fix Version/s: 4.0
Thanks for the report.
As of commit 612a04d6b0ff8fa3060d5e943f4f72968ea71700 the reported failure does
not happen anymore.
Please have a look, and reopen this issue if you have other case that still
produce a negative value.
> WilsonConfidenceInterval returning negative values
> --------------------------------------------------
>
> Key: MATH-1421
> URL: https://issues.apache.org/jira/browse/MATH-1421
> Project: Commons Math
> Issue Type: Bug
> Affects Versions: 3.6.1
> Reporter: Mathijs Vogelzang
> Fix For: 4.0
>
>
> Wilson confidence intervals sometimes return negative values as the lower
> bound, e.g.
> IntervalUtils.getWilsonScoreInterval(19436, 0, 0.95).getLowerBound() returns
> -1.3549849074815073E-20
> This is causing assertion fails in our code, which we have fixed it now by
> wrapping the confidence score bounds in Math.max(0, Math.min(1, bound)) until
> the method doesn't return wrong results anymore.
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