Major Description
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 the algorithm used to reorder the predictors when a subset is requested, but the fix appears to be a simple correction to the indexing range in the for-loop in the regress method of MillerUpdatingRegression.java.
Patch with expanded unit test to follow shortly.
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