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Posted to issues@flink.apache.org by "Robert Metzger (JIRA)" <ji...@apache.org> on 2016/08/14 07:59:20 UTC

[jira] [Updated] (FLINK-4205) Implement stratified sampling for DataSet

     [ https://issues.apache.org/jira/browse/FLINK-4205?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Robert Metzger updated FLINK-4205:
----------------------------------
    Component/s: DataSet API

> Implement stratified sampling for DataSet
> -----------------------------------------
>
>                 Key: FLINK-4205
>                 URL: https://issues.apache.org/jira/browse/FLINK-4205
>             Project: Flink
>          Issue Type: New Feature
>          Components: DataSet API
>            Reporter: Do Le Quoc
>
> Since a Dataset might consist of data from disparate sources. As such, every data source should be considered fairly to have a representative sample. For this, stratified sampling is needed to ensure that data from every source (stratum) is selected and none of the minorities are excluded. 



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