Makoto Yui created HIVEMALL-131:
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Summary: 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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