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https://issues.apache.org/jira/browse/MATH-411?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Phil Steitz updated MATH-411:
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Fix Version/s: 2.2
> Multiple Regression newSampleData methods inconsistently create / omit
> intercepts
> ---------------------------------------------------------------------------------
>
> Key: MATH-411
> URL: https://issues.apache.org/jira/browse/MATH-411
> Project: Commons Math
> Issue Type: Bug
> Affects Versions: 2.0, 2.1
> Reporter: Phil Steitz
> Fix For: 2.2
>
>
> The newSampleData(double[], nrows, ncols) method used in the unit tests adds
> a unitary column to the design matrix, resulting in an intercept term being
> estimated among the regression parameters. The other newSampleData methods
> do not do this, forcing users to add the column of "1"s to estimate models
> with intercept. Behavior should be consistent and users should not have to
> add the column.
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