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From "Joseph K. Bradley (JIRA)" <>
Subject [jira] [Commented] (SPARK-5987) Model import/export for GaussianMixtureModel
Date Wed, 11 Mar 2015 16:14:38 GMT


Joseph K. Bradley commented on SPARK-5987:

This isn't a bug in Spark SQL.  The issue is that we haven't defined a UserDefinedType for
Matrices.  (We should, but haven't yet.)  When I said "basic types," I meant the types enumerated
on the SQL programming guide (basically, Array[Double] or Seq[Double] will be best).  I'd
recommend flattening the matrix into an Array[Double] instead of having nested types.  The
nesting is less efficient because of all of the extra objects it creates.

> Model import/export for GaussianMixtureModel
> --------------------------------------------
>                 Key: SPARK-5987
>                 URL:
>             Project: Spark
>          Issue Type: Sub-task
>          Components: MLlib
>    Affects Versions: 1.3.0
>            Reporter: Joseph K. Bradley
>            Assignee: Manoj Kumar
> Support save/load for GaussianMixtureModel

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