GitHub user brkyvz opened a pull request:
https://github.com/apache/spark/pull/5858
[SPARK-7241] Pearson correlation for DataFrames
submitting this PR from a phone, excuse the brevity.
adds Pearson correlation to Dataframes, reusing the covariance calculation
code
cc @mengxr @rxin
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/brkyvz/spark df-corr
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/5858.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 #5858
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commit a682d06a99fc78eabc98b88a7f52f838a5b0811b
Author: Burak Yavuz <[email protected]>
Date: 2015-05-02T02:14:46Z
ready for PR
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