[jira] Commented: (PIG-277) UDF for computing correlation and covariance between data sets

["Pi Song (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PIG-277?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12609572#action_12609572 ] 

Pi Song commented on PIG-277:
-----------------------------

Looks good. +1

If no objection within 48 hours, I will commit this.

> UDF for computing correlation and covariance between data sets
> --------------------------------------------------------------
>
>                 Key: PIG-277
>                 URL: https://issues.apache.org/jira/browse/PIG-277
>             Project: Pig
>          Issue Type: New Feature
>            Reporter: Ajay Garg
>            Priority: Minor
>         Attachments: newStats.patch, stat.patch
>
>
> 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 COV('a','b','c');
> D = foreach B generate group,c(A.$0,A.$1,A.$2);

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