[jira] [Created] (MADLIB-1286) Mean and std_dev from standardization not used in predict

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

Nandish Jayaram created MADLIB-1286:
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             Summary: Mean and std_dev from standardization not used in predict
                 Key: MADLIB-1286
                 URL: https://issues.apache.org/jira/browse/MADLIB-1286
             Project: Apache MADlib
          Issue Type: Bug
          Components: Module: Regularized Regression
            Reporter: Nandish Jayaram
             Fix For: v1.16


Elastic net train has a parameter called _standardize_. When this flag is set, train creates a new temp table with standardized independent variable and uses it for training. But, the mean and std_dev computed in this standardization process is not captured in the output table. So during predict, the independent variable is not standardized (with the mean and std_dev that was used to standardize training data) if the model was trained with _standardize=true_.


 Is this expected behavior? If not, this seems like a bug.



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