[
https://issues.apache.org/jira/browse/SPARK-5956?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14522235#comment-14522235
]
Apache Spark commented on SPARK-5956:
-------------------------------------
User 'mengxr' has created a pull request for this issue:
https://github.com/apache/spark/pull/5820
> Transformer/Estimator should be copyable.
> -----------------------------------------
>
> Key: SPARK-5956
> URL: https://issues.apache.org/jira/browse/SPARK-5956
> Project: Spark
> Issue Type: Sub-task
> Components: ML
> Affects Versions: 1.3.0
> Reporter: Xiangrui Meng
> Assignee: Xiangrui Meng
>
> In a pipeline, we don't save additional params specified in `fit()` to
> transformers, because we should not modify them. The current solution is to
> store training parameters in the pipeline model and apply those parameters at
> `transform()`. A better solution would be making transformers copyable.
> Calling `.copy` on a transformer produces a new transformer with a different
> UID but same parameters. Then we can use the copied transformers in the
> pipeline model, with additional params stored.
> `copy` may not be a good name because it is not an exact copy.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
