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From "Nick Pentreath (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SPARK-13998) HashingTF should extend UnaryTransformer
Date Fri, 18 Mar 2016 09:25:33 GMT

     [ https://issues.apache.org/jira/browse/SPARK-13998?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Nick Pentreath updated SPARK-13998:
-----------------------------------
    Issue Type: Sub-task  (was: Improvement)
        Parent: SPARK-13964

> HashingTF should extend UnaryTransformer
> ----------------------------------------
>
>                 Key: SPARK-13998
>                 URL: https://issues.apache.org/jira/browse/SPARK-13998
>             Project: Spark
>          Issue Type: Sub-task
>          Components: ML
>    Affects Versions: 2.0.0
>            Reporter: Jacek Laskowski
>            Priority: Minor
>
> Currently [HashingTF|https://github.com/apache/spark/blob/master/mllib/src/main/scala/org/apache/spark/ml/feature/HashingTF.scala#L37]
extends {{Transformer with HasInputCol with HasOutputCol}}, but there is a helper [UnaryTransformer|https://github.com/apache/spark/blob/master/mllib/src/main/scala/org/apache/spark/ml/Transformer.scala#L79-L80]
abstract class for exactly the reason.



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