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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2017/02/16 22:27:42 UTC

[jira] [Assigned] (SPARK-18409) LSH approxNearestNeighbors should use approxQuantile instead of sort

     [ https://issues.apache.org/jira/browse/SPARK-18409?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-18409:
------------------------------------

    Assignee:     (was: Apache Spark)

> LSH approxNearestNeighbors should use approxQuantile instead of sort
> --------------------------------------------------------------------
>
>                 Key: SPARK-18409
>                 URL: https://issues.apache.org/jira/browse/SPARK-18409
>             Project: Spark
>          Issue Type: Improvement
>          Components: ML
>            Reporter: Joseph K. Bradley
>
> LSHModel.approxNearestNeighbors sorts the full dataset on the hashDistance in order to find a threshold.  It should use approxQuantile instead.



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