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From "Brian Gawalt (JIRA)" <>
Subject [jira] [Commented] (SPARK-2335) k-Nearest Neighbor classification and regression for MLLib
Date Fri, 30 Jan 2015 19:24:34 GMT


Brian Gawalt commented on SPARK-2335:

I'm inclined to wonder the same thing; generalizing beyond integers would
be nice

> k-Nearest Neighbor classification and regression for MLLib
> ----------------------------------------------------------
>                 Key: SPARK-2335
>                 URL:
>             Project: Spark
>          Issue Type: New Feature
>          Components: MLlib
>            Reporter: Brian Gawalt
>            Priority: Minor
>              Labels: features
> The k-Nearest Neighbor model for classification and regression problems is a simple and
intuitive approach, offering a straightforward path to creating non-linear decision/estimation
contours. It's downsides -- high variance (sensitivity to the known training data set) and
computational intensity for estimating new point labels -- both play to Spark's big data strengths:
lots of data mitigates data concerns; lots of workers mitigate computational latency. 
> We should include kNN models as options in MLLib.

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