GitHub user viirya opened a pull request:
https://github.com/apache/spark/pull/5902
[SPARK-7245][SQL] Add Spearman correlation support for DataFrames
JIRA: https://issues.apache.org/jira/browse/SPARK-7245
Besides, `CovarianceCounter.merge` has a bug that sometimes `other.count`
could be zero. It makes the results incorrect (`NaN`). This pr fixes it and a
minor typo in `CovarianceCounter` too.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/viirya/spark-1 spearman_corr
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/5902.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 #5902
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commit 32f511dba79dad3883252e7915f75400e0ceca95
Author: Liang-Chi Hsieh <[email protected]>
Date: 2015-05-05T04:08:59Z
Add Spearman correlation support for DataFrames.
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