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https://issues.apache.org/jira/browse/HIVEMALL-253?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16859746#comment-16859746
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ASF GitHub Bot commented on HIVEMALL-253:
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myui commented on issue #192: [HIVEMALL-253]UDF map_roulette() created
URL:
https://github.com/apache/incubator-hivemall/pull/192#issuecomment-500302649
I'll revise your pull request in my local branch and merge it because lots
of minor changed required for merging.
https://github.com/apache/incubator-hivemall/pull/193
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> UDF map_roulette() created
> --------------------------
>
> Key: HIVEMALL-253
> URL: https://issues.apache.org/jira/browse/HIVEMALL-253
> Project: Hivemall
> Issue Type: New Feature
> Affects Versions: 0.6.0
> Reporter: Aaron Wong
> Assignee: Makoto Yui
> Priority: Major
>
> In data processing process, we usually encounter the problem that we have
> some selection and their probably(or weight), we should select one of them
> according to their probably(or weight).
> UDF map_roulette() is a implement of roulette. It can select a Key from a map
> according to key's weight value.
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