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https://issues.apache.org/jira/browse/HIVEMALL-131?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Makoto Yui updated HIVEMALL-131:
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Description:
[Stratified Sampling|https://en.wikipedia.org/wiki/Stratified_sampling] using
SQL is valuable and should be documented.
https://gist.github.com/myui/649c08cd2fb951e94eb4fa215eaf9df2
https://stackoverflow.com/questions/30235542/sql-random-sample-with-groups
was:
[Stratified Sampling|
https://en.wikipedia.org/wiki/Stratified_sampling] using SQL is valuable and
should be documented.
https://gist.github.com/myui/649c08cd2fb951e94eb4fa215eaf9df2
https://stackoverflow.com/questions/30235542/sql-random-sample-with-groups
> Add documentation about Stratified Sampling in general tips
> -----------------------------------------------------------
>
> Key: HIVEMALL-131
> URL: https://issues.apache.org/jira/browse/HIVEMALL-131
> Project: Hivemall
> Issue Type: Sub-task
> Reporter: Makoto Yui
> Assignee: Makoto Yui
> Priority: Minor
>
> [Stratified Sampling|https://en.wikipedia.org/wiki/Stratified_sampling] using
> SQL is valuable and should be documented.
> https://gist.github.com/myui/649c08cd2fb951e94eb4fa215eaf9df2
> https://stackoverflow.com/questions/30235542/sql-random-sample-with-groups
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