[GitHub] [madlib] orhankislal opened a new pull request #427: KNN: Add distances to the output table

[GitBox <gi...@apache.org>]

orhankislal opened a new pull request #427: KNN: Add distances to the output table
URL: https://github.com/apache/madlib/pull/427
 
 
   This commit adds a new column to the output table to expose the
   distances for the nearest neighbors. This column shows up only when the
   user actually requests nearest neighbors.
   
   In addition, this commit adds a safeguard for the distances. We get the
   absolute value of the distance function output in case some floating
   point operations cause the distance function to return a negative value.

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