GitHub user srowen opened a pull request:
https://github.com/apache/spark/pull/19038
[SPARK-21806][MLLIB] BinaryClassificationMetrics pr(): first point (0.0,
1.0) is misleading
## What changes were proposed in this pull request?
Prepend (0,p) to precision-recall curve not (0,1) where p matches lowest
recall point
## How was this patch tested?
Updated tests.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/srowen/spark SPARK-21806
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/19038.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #19038
----
commit 48c9159fe873222649089ac9ae30864b1a4fbc50
Author: Sean Owen <[email protected]>
Date: 2017-08-24T11:08:19Z
Prepend (0,p) to precision-recall curve not (0,1) where p matches lowest
recall point
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