-Re: Using Correlation and Covariance UDFs
Johnny Zhang 2013-03-27, 00:11
For CORRELATION, I guess you can do something like
A = load 'random.txt' using PigStorage(':') as
B = group A all;
D = foreach B generate group,COR(A.$0,A.$1,A.$2,A.$3,.......A.$499);
For COVARIANCE, I guess the UDF is COV.
On Tue, Mar 26, 2013 at 3:28 PM, Renato Marroquín Mogrovejo <
[EMAIL PROTECTED]> wrote:
> Hi all,
> Could anyone be kind enough to point me to some examples on using the
> COVARIANCE and the CORRELATION UDFS described in here?
> Renato M.
>  https://issues.apache.org/jira/browse/PIG-277