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Posted to issues@spark.apache.org by "Joseph K. Bradley (JIRA)" <ji...@apache.org> on 2018/06/13 22:59:01 UTC
[jira] [Updated] (SPARK-8799) OneVsRestModel should extend
ClassificationModel
[ https://issues.apache.org/jira/browse/SPARK-8799?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Joseph K. Bradley updated SPARK-8799:
-------------------------------------
Target Version/s: (was: 3.0.0)
> OneVsRestModel should extend ClassificationModel
> ------------------------------------------------
>
> Key: SPARK-8799
> URL: https://issues.apache.org/jira/browse/SPARK-8799
> Project: Spark
> Issue Type: Improvement
> Components: ML
> Reporter: Feynman Liang
> Priority: Minor
>
> Many parts of `OneVsRestModel` can be generalized to `ClassificationModel`. For example:
> * `accColName` can be used to populate `ClassificationModel#predictRaw` and share implementations of `transform`
> * SPARK-8092 adds `setFeaturesCol` and `setPredictionCol` which could be gotten for free through subclassing
> `ClassificationModel` is the correct supertype (e.g. not `PredictionModel`) because the labels for a `OneVsRest` will always be discrete and finite.
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