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From "LI Guobao (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (SYSTEMML-2367) Extend scheme Disjoint_Random
Date Mon, 18 Jun 2018 09:46:00 GMT

     [ https://issues.apache.org/jira/browse/SYSTEMML-2367?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

LI Guobao closed SYSTEMML-2367.
-------------------------------

> Extend scheme Disjoint_Random
> -----------------------------
>
>                 Key: SYSTEMML-2367
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-2367
>             Project: SystemML
>          Issue Type: Sub-task
>            Reporter: LI Guobao
>            Assignee: LI Guobao
>            Priority: Major
>             Fix For: SystemML 1.2
>
>
> It aims to extend the scheme of data partition.
>  * Disjoint_Random: for each worker, use a permutation multiply {{P[beg:end,] %*% X}},
where P is constructed for example with {{P=table(seq(1,nrow(X)),sample(nrow(X), nrow(X)))}},
i.e., sampling without replacement to ensure disjointness



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