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Posted to issues@spark.apache.org by "Hyukjin Kwon (JIRA)" <ji...@apache.org> on 2019/05/21 04:25:18 UTC
[jira] [Updated] (SPARK-7126) For spark.ml Classifiers,
automatically index labels if they are not yet indexed
[ https://issues.apache.org/jira/browse/SPARK-7126?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Hyukjin Kwon updated SPARK-7126:
--------------------------------
Labels: bulk-closed (was: )
> For spark.ml Classifiers, automatically index labels if they are not yet indexed
> --------------------------------------------------------------------------------
>
> Key: SPARK-7126
> URL: https://issues.apache.org/jira/browse/SPARK-7126
> Project: Spark
> Issue Type: Improvement
> Components: ML
> Affects Versions: 1.4.0
> Reporter: Joseph K. Bradley
> Priority: Major
> Labels: bulk-closed
>
> Now that we have StringIndexer, we could have spark.ml.classification.Classifier (the abstraction) automatically handle label indexing if the labels are not yet indexed.
> This would require a bit of design:
> * Should predict() output the original labels or the indices?
> * How should we notify users that the labels are being automatically indexed?
> * How should we provide that index to the users?
> * If multiple parts of a Pipeline automatically index labels, what do we need to do to make sure they are consistent?
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