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From "Matthew Hayes (Jira)" <j...@apache.org>
Subject [jira] [Updated] (DATAFU-149) Add MutliLabelStratifiedSample to DataFu.spark
Date Thu, 26 Mar 2020 21:33:00 GMT

     [ https://issues.apache.org/jira/browse/DATAFU-149?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matthew Hayes updated DATAFU-149:
---------------------------------
    Fix Version/s:     (was: 1.6.0)

> Add MutliLabelStratifiedSample to DataFu.spark
> ----------------------------------------------
>
>                 Key: DATAFU-149
>                 URL: https://issues.apache.org/jira/browse/DATAFU-149
>             Project: DataFu
>          Issue Type: Improvement
>    Affects Versions: 1.5.0
>            Reporter: Russell Jurney
>            Assignee: Russell Jurney
>            Priority: Major
>              Labels: datafu, spark
>
> I'm working on an implementation of On the Stratification of Multi-Label Data, to create
a stratified (balanced, in my case) sample of highly skewed labels for a multi-label, multi-class
classification problem. This isn't straightforward because adding one record adds multiple
labels to the balance. A greedy algorithm that adds labels with the least common labels works,
and since I'm writing it, it would probably make a good feature.
> http://lpis.csd.auth.gr/publications/sechidis-ecmlpkdd-2011.pdf



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