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From "Nick Pentreath (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-2336) Approximate k-NN Models for MLLib
Date Fri, 24 Feb 2017 08:11:44 GMT

    [ https://issues.apache.org/jira/browse/SPARK-2336?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15882187#comment-15882187
] 

Nick Pentreath commented on SPARK-2336:
---------------------------------------

I think it's safe to say that this now lives in a Spark package (that seems reasonable actively
maintained which is great) so is anyone wants this that is where to look. I further think
it's safe to say this is not going to be prioritised for MLlib, so shall we close this ticket?

> Approximate k-NN Models for MLLib
> ---------------------------------
>
>                 Key: SPARK-2336
>                 URL: https://issues.apache.org/jira/browse/SPARK-2336
>             Project: Spark
>          Issue Type: New Feature
>          Components: MLlib
>            Reporter: Brian Gawalt
>            Priority: Minor
>              Labels: clustering, features
>
> After tackling the general k-Nearest Neighbor model as per https://issues.apache.org/jira/browse/SPARK-2335
, there's an opportunity to also offer approximate k-Nearest Neighbor. A promising approach
would involve building a kd-tree variant within from each partition, a la
> http://www.autonlab.org/autonweb/14714.html?branch=1&language=2
> This could offer a simple non-linear ML model that can label new data with much lower
latency than the plain-vanilla kNN versions.



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