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From "Vasilis Vryniotis (JIRA)" <>
Subject [jira] [Created] (SPARK-19787) Different default regParam values in ALS
Date Wed, 01 Mar 2017 14:00:49 GMT
Vasilis Vryniotis created SPARK-19787:

             Summary: Different default regParam values in ALS
                 Key: SPARK-19787
             Project: Spark
          Issue Type: Bug
          Components: MLlib
    Affects Versions: 2.1.0, 2.0.2, 2.0.1, 2.0.0
            Reporter: Vasilis Vryniotis

In the ALS method the default values of regParam do not match within the same file (lines
and [714](
In one place we set it to 1.0 and in the other to 0.1.

We can change the one of train() method to 0.1. The method is marked with DeveloperApi so
it should not affect the users. Based on what I saw, whenever we use the particular method
we provide all parameters, so the default does not matter. Only exception is the unit-tests
on ALSSuite but the change does not break them.

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