[jira] Commented: (MATH-350) Regression in package "regression"

["Gilles (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MATH-350?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12844027#action_12844027 ] 

Gilles commented on MATH-350:
-----------------------------

Examining the history:
{noformat}
r825925 | luc | 2009-10-16 17:11:47 +0200 (Fri, 16 Oct 2009) | 1 line

replaced custom linear solve computation by use of the linear package features
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The diff shows:
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-        return solveUpperTriangular(qr.getR(), qr.getQ().transpose().operate(Y));
+        return qr.getSolver().solve(Y);
{noformat}


> Regression in package "regression"
> ----------------------------------
>
>                 Key: MATH-350
>                 URL: https://issues.apache.org/jira/browse/MATH-350
>             Project: Commons Math
>          Issue Type: Bug
>    Affects Versions: 2.0
>            Reporter: Gilles
>         Attachments: OLSRegressionCompare20To21Test.java
>
>
> There is a regression in class "OLSMultipleLinearRegression".

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