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https://issues.apache.org/jira/browse/SPARK-14033?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15218495#comment-15218495
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Joseph K. Bradley commented on SPARK-14033:
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That's a great point, and it's something which should be doable in either case.
The solution we're working towards is moving models outside of the Spark
package, where the models within MLlib will inherit from those outside ones &
extend them with operations on DataFrames. That will be doable if we keep
Estimator and Model separate, and also if we merge them.
> Merging Estimator & Model
> -------------------------
>
> Key: SPARK-14033
> URL: https://issues.apache.org/jira/browse/SPARK-14033
> Project: Spark
> Issue Type: Improvement
> Components: ML
> Reporter: Joseph K. Bradley
> Assignee: Joseph K. Bradley
> Attachments: StyleMutabilityMergingEstimatorandModel.pdf
>
>
> This JIRA is for merging the spark.ml concepts of Estimator and Model.
> Goal: Have clearer semantics which match existing libraries (such as
> scikit-learn).
> For details, please see the linked design doc. Comment on this JIRA to give
> feedback on the proposed design. Once the proposal is discussed and this
> work is confirmed as ready to proceed, this JIRA will serve as an umbrella
> for the merge tasks.
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