Burak Yavuz 4dc8d74491 [SPARK-7240][SQL] Single pass covariance calculation for dataframes ... Added the calculation of covariance between two columns to DataFrames. cc mengxr rxin Author: Burak Yavuz <brkyvz@gmail.com> Closes #5825 from brkyvz/df-cov and squashes the following commits: cb18046 [Burak Yavuz] changed to sample covariance f2e862b [Burak Yavuz] fixed failed test 51e39b8 [Burak Yavuz] moved implementation 0c6a759 [Burak Yavuz] addressed math comments 8456eca [Burak Yavuz] fix pyStyle3 aa2ad29 [Burak Yavuz] fix pyStyle2 4e97a50 [Burak Yavuz] Merge branch 'master' of github.com:apache/spark into df-cov e3b0b85 [Burak Yavuz] addressed comments v0.1 a7115f1 [Burak Yavuz] fix python style 7dc6dbc [Burak Yavuz] reorder imports 408cb77 [Burak Yavuz] initial commit		2015-05-01 13:29:17 -07:00
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docs	[SPARK-6264] [MLLIB] Support FPGrowth algorithm in Python API	2015-04-09 15:10:10 -07:00
lib	[SPARK-2305] [PySpark] Update Py4J to version 0.8.2.1	2014-07-29 19:02:06 -07:00
pyspark	[SPARK-7240][SQL] Single pass covariance calculation for dataframes	2015-05-01 13:29:17 -07:00
test_support	[SPARK-4897] [PySpark] Python 3 support	2015-04-16 16:20:57 -07:00
.gitignore	[SPARK-3946] gitignore in /python includes wrong directory	2014-10-14 14:09:39 -07:00
run-tests	[SPARK-6953] [PySpark] speed up python tests	2015-04-21 17:49:55 -07:00