[jira] [Comment Edited] (DATAFU-16) weighted reservoir sampling with exponential jumps UDF

["jian wang (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DATAFU-16?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13878635#comment-13878635 ] 

jian wang edited comment on DATAFU-16 at 1/22/14 1:35 PM:
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According to Matt's feedback on review request https://reviews.apache.org/r/17058/, need to re-think how we implement the reservoir sample with exponential jumps. Will done an offline simulation using the exp jump reservoir by this weekend.


was (Author: king821221):
According to Matt's feedback on review request https://reviews.apache.org/r/17058/, need to re-think how we implement the reservoir sample with exponential jumps. Will do an offline simulation by this weekend.

> weighted reservoir sampling with exponential jumps UDF
> ------------------------------------------------------
>
>                 Key: DATAFU-16
>                 URL: https://issues.apache.org/jira/browse/DATAFU-16
>             Project: DataFu
>          Issue Type: New Feature
>         Environment: Mac, Linux
> pig-0.11
>            Reporter: jian wang
>
> Create a weightedReservoirSampleWithExpJump UDF to implement the weighted reservoir sampling algorithm with exponential jumps. Investigation is tracked in  https://github.com/linkedin/datafu/issues/80. This task is part of experiment of different weighted sampling algorithms.



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