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From "Gianmarco De Francisci Morales (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PIG-3221) Bootstrap sampling
Date Mon, 22 Apr 2013 08:21:16 GMT

    [ https://issues.apache.org/jira/browse/PIG-3221?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13637831#comment-13637831
] 

Gianmarco De Francisci Morales commented on PIG-3221:
-----------------------------------------------------

Hi Vicky,

Thanks for your interest in this project idea.

Given that Pig is not a statistics only, my current understanding is that we want the samples
to be materialized because they can be used, e.g., to train an ensemble classifier.
Of course the case where we are only interested in statistics can be optimized.
Maybe a UDF would do the trick in this latter case.
                
> Bootstrap sampling
> ------------------
>
>                 Key: PIG-3221
>                 URL: https://issues.apache.org/jira/browse/PIG-3221
>             Project: Pig
>          Issue Type: New Feature
>            Reporter: Gianmarco De Francisci Morales
>              Labels: gsoc2013
>
> Implement a bootstrap sampling option ( http://en.wikipedia.org/wiki/Bootstrap_(statistics)
) in Pig's SAMPLE operator.

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