Multiple Regression newSampleData methods inconsistently create / omit
intercepts
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Key: MATH-411
URL: https://issues.apache.org/jira/browse/MATH-411
Project: Commons Math
Issue Type: Bug
Affects Versions: 2.1, 2.0
Reporter: Phil Steitz
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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