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Posted to issues@spark.apache.org by "Martin Menestret (JIRA)" <ji...@apache.org> on 2015/08/06 18:25:04 UTC

[jira] [Created] (SPARK-9690) Adding the possibility to set the seed of the rand in the CrossValidator fold

Martin Menestret created SPARK-9690:
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             Summary: Adding the possibility to set the seed of the rand in the CrossValidator fold
                 Key: SPARK-9690
                 URL: https://issues.apache.org/jira/browse/SPARK-9690
             Project: Spark
          Issue Type: Improvement
          Components: ML
    Affects Versions: 1.4.1
            Reporter: Martin Menestret
            Priority: Minor
             Fix For: 1.5.0


The fold in the ML CrossValidator depends on a rand whose seed is set to 0 and it leads the sql.functions rand to call sc._jvm.functions.rand() with no seed.

In order to be able to unit test a Cross Validation it would be a good idea to be able to set this seed so the output of the cross validation (with a featureSubsetStrategy set to "all") would always be the same.



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