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Posted to issues@spark.apache.org by "Bago Amirbekian (JIRA)" <ji...@apache.org> on 2018/02/15 21:26:01 UTC

[jira] [Commented] (SPARK-23265) Update multi-column error handling logic in QuantileDiscretizer

    [ https://issues.apache.org/jira/browse/SPARK-23265?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16366277#comment-16366277 ] 

Bago Amirbekian commented on SPARK-23265:
-----------------------------------------

What's the status of this? Will this be a change in behaviour?

> Update multi-column error handling logic in QuantileDiscretizer
> ---------------------------------------------------------------
>
>                 Key: SPARK-23265
>                 URL: https://issues.apache.org/jira/browse/SPARK-23265
>             Project: Spark
>          Issue Type: Improvement
>          Components: ML
>    Affects Versions: 2.3.0
>            Reporter: Nick Pentreath
>            Priority: Major
>
> SPARK-22397 added support for multiple columns to {{QuantileDiscretizer}}. If both single- and mulit-column params are set (specifically {{inputCol}} / {{inputCols}}) an error is thrown.
> However, SPARK-22799 added more comprehensive error logic for {{Bucketizer}}. The logic for {{QuantileDiscretizer}} should be updated to match. *Note* that for this transformer, it is acceptable to set the single-column param for {{numBuckets }}when transforming multiple columns, since that is then applied to all columns.



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