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https://issues.apache.org/jira/browse/SPARK-6725?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14486296#comment-14486296
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Joseph K. Bradley commented on SPARK-6725:
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Linked [https://issues.apache.org/jira/browse/SPARK-5874] since it is related,
but it is unclear to me whether it will affect implementing model import/export.
> Model export/import for Pipeline API
> ------------------------------------
>
> Key: SPARK-6725
> URL: https://issues.apache.org/jira/browse/SPARK-6725
> Project: Spark
> Issue Type: New Feature
> Components: ML
> Affects Versions: 1.3.0
> Reporter: Joseph K. Bradley
> Assignee: Joseph K. Bradley
> Priority: Critical
>
> This is an umbrella JIRA for adding model export/import to the spark.ml API.
> This JIRA is for adding the internal Saveable/Loadable API and Parquet-based
> format, not for other formats like PMML.
> This will require the following steps:
> * Add export/import for all PipelineStages supported by spark.ml
> ** This will include some Transformers which are not Models.
> ** These can use almost the same format as the spark.mllib model save/load
> functions, but the model metadata must store a different class name (marking
> the class as a spark.ml class).
> * After all PipelineStages support save/load, add an interface which forces
> future additions to support save/load.
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