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Posted to issues@spark.apache.org by "Hyukjin Kwon (JIRA)" <ji...@apache.org> on 2019/05/21 04:13:08 UTC
[jira] [Resolved] (SPARK-18454) Changes to improve Nearest Neighbor
Search for LSH
[ https://issues.apache.org/jira/browse/SPARK-18454?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Hyukjin Kwon resolved SPARK-18454.
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Resolution: Incomplete
> Changes to improve Nearest Neighbor Search for LSH
> --------------------------------------------------
>
> Key: SPARK-18454
> URL: https://issues.apache.org/jira/browse/SPARK-18454
> Project: Spark
> Issue Type: Improvement
> Components: ML
> Reporter: Yun Ni
> Priority: Major
> Labels: bulk-closed
>
> We all agree to do the following improvement to Multi-Probe NN Search:
> (1) Use approxQuantile to get the {{hashDistance}} threshold instead of doing full sort on the whole dataset
> Currently we are still discussing the following:
> (1) What {{hashDistance}} (or Probing Sequence) we should use for {{MinHash}}
> (2) What are the issues and how we should change the current Nearest Neighbor implementation
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