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Posted to issues@flink.apache.org by "Till Rohrmann (JIRA)" <ji...@apache.org> on 2015/08/21 15:45:45 UTC

[jira] [Resolved] (FLINK-1901) Create sample operator for Dataset

     [ https://issues.apache.org/jira/browse/FLINK-1901?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Till Rohrmann resolved FLINK-1901.
----------------------------------
    Resolution: Fixed

Added via c9cfb17cb095def8b8ea0ed1b598fc78b890b874

A fixed size sample operator working on Flink's managed memory will be implemented with FLINK-2549.

> Create sample operator for Dataset
> ----------------------------------
>
>                 Key: FLINK-1901
>                 URL: https://issues.apache.org/jira/browse/FLINK-1901
>             Project: Flink
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Theodore Vasiloudis
>            Assignee: Chengxiang Li
>
> In order to be able to implement Stochastic Gradient Descent and a number of other machine learning algorithms we need to have a way to take a random sample from a Dataset.
> We need to be able to sample with or without replacement from the Dataset, choose the relative or exact size of the sample, set a seed for reproducibility, and support sampling within iterations.



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