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From "Yun Ni (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-5992) Locality Sensitive Hashing (LSH) for MLlib
Date Mon, 17 Oct 2016 06:47:58 GMT

    [ https://issues.apache.org/jira/browse/SPARK-5992?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15581412#comment-15581412
] 

Yun Ni commented on SPARK-5992:
-------------------------------

Yes, I do have comparison with full scan. Usually kNN with 1 hash function does not work well,
so I enabled OR-amplification with multiple hash functions. You can set the number of hash
functions using "outputDim".

> Locality Sensitive Hashing (LSH) for MLlib
> ------------------------------------------
>
>                 Key: SPARK-5992
>                 URL: https://issues.apache.org/jira/browse/SPARK-5992
>             Project: Spark
>          Issue Type: New Feature
>          Components: MLlib
>            Reporter: Joseph K. Bradley
>
> Locality Sensitive Hashing (LSH) would be very useful for ML.  It would be great to discuss
some possible algorithms here, choose an API, and make a PR for an initial algorithm.



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