UDF for computing correlation and covariance between data sets
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Key: PIG-277
URL: https://issues.apache.org/jira/browse/PIG-277
Project: Pig
Issue Type: New Feature
Reporter: Ajay Garg
Priority: Minor
UDFs for computing correlation and covariance between data sets. Use following
commands to compute covariance
A = load 'input.xml' using PigStorage(':');
B = group A all;
define c COR('a','b','c');
D = foreach B generate group,c(A.$0,A.$1,A.$2);
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