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https://issues.apache.org/jira/browse/SPARK-21481?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16126914#comment-16126914
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Yanbo Liang commented on SPARK-21481:
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See my comments at https://github.com/apache/spark/pull/18736 .
> Add indexOf method in ml.feature.HashingTF similar to mllib.feature.HashingTF
> -----------------------------------------------------------------------------
>
> Key: SPARK-21481
> URL: https://issues.apache.org/jira/browse/SPARK-21481
> Project: Spark
> Issue Type: Improvement
> Components: ML
> Affects Versions: 2.1.0, 2.2.0
> Reporter: Aseem Bansal
>
> If we want to find the index of any input based on hashing trick then it is
> possible in
> https://spark.apache.org/docs/2.2.0/api/scala/index.html#org.apache.spark.mllib.feature.HashingTF
> but not in
> https://spark.apache.org/docs/2.2.0/api/scala/index.html#org.apache.spark.ml.feature.HashingTF.
> Should allow that for feature parity
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