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https://issues.apache.org/jira/browse/MATH-1477?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16813700#comment-16813700
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Chee Sing Lee commented on MATH-1477:
-------------------------------------
Link to PR: [https://github.com/apache/commons-math/pull/104]
> MillerUpdatingRegression: ArrayIndexOutOfBounds when calling regress with
> variablesToInclude parameter
> ------------------------------------------------------------------------------------------------------
>
> Key: MATH-1477
> URL: https://issues.apache.org/jira/browse/MATH-1477
> Project: Commons Math
> Issue Type: Bug
> Affects Versions: 3.6.1
> Reporter: Chee Sing Lee
> Priority: Major
> Labels: easyfix, newbie, patch
> Time Spent: 10m
> Remaining Estimate: 0h
>
> When performing a regression with a subset of predictors, an
> ArrayIndexOutOfBounds exception will occur for certain subset selections. For
> example, this appears to happen consistently for regressions without a
> constant term when the predictor at index 0 is not selected.
> I do not understand at all algorithm used to reorder the predictors when a
> subset is used, but the fix appears to be a simple correction to the indexing
> range in the for-loop at line 1059 of MillerUpdatingRegression.java.
>
> Patch with expanded unit test to follow shortly.
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