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| author | Liang-Chi Hsieh <viirya@appier.com> | 2015-11-01 18:37:27 -0800 |
|---|---|---|
| committer | Yin Huai <yhuai@databricks.com> | 2015-11-01 18:37:27 -0800 |
| commit | 3e770a64a48c271c5829d2bcbdc1d6430cda2ac9 (patch) | |
| tree | ec0b281b7fafda0bd896f9468c2cb47378e088c0 /mllib | |
| parent | f8d93edec82eedab59d50aec06ca2de7e4cf14f6 (diff) | |
| download | spark-3e770a64a48c271c5829d2bcbdc1d6430cda2ac9.tar.gz spark-3e770a64a48c271c5829d2bcbdc1d6430cda2ac9.tar.bz2 spark-3e770a64a48c271c5829d2bcbdc1d6430cda2ac9.zip | |
[SPARK-9298][SQL] Add pearson correlation aggregation function
JIRA: https://issues.apache.org/jira/browse/SPARK-9298
This patch adds pearson correlation aggregation function based on `AggregateExpression2`.
Author: Liang-Chi Hsieh <viirya@appier.com>
Closes #8587 from viirya/corr_aggregation.
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