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https://issues.apache.org/jira/browse/SPARK-7047?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14528932#comment-14528932
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Joseph K. Bradley commented on SPARK-7047:
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I realized we don't have "Model" in Python yet...so I'll just do this for Scala
for now.
> Model parent should be Optional
> -------------------------------
>
> Key: SPARK-7047
> URL: https://issues.apache.org/jira/browse/SPARK-7047
> Project: Spark
> Issue Type: Improvement
> Components: ML
> Affects Versions: 1.4.0
> Reporter: Joseph K. Bradley
> Assignee: Joseph K. Bradley
> Priority: Minor
>
> Ensembles' component Models have no parents. Instead of making those values
> null, we should make them Options.
> For Python, "None" is probably the correct equivalent.
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