[jira] [Updated] (SYSTEMML-2226) Add support for colIndexMin/colIndexMax

["Matthias Boehm (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SYSTEMML-2226?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matthias Boehm updated SYSTEMML-2226:
-------------------------------------
    Issue Type: Task  (was: Sub-task)
        Parent:     (was: SYSTEMML-2208)

> Add support for colIndexMin/colIndexMax
> ---------------------------------------
>
>                 Key: SYSTEMML-2226
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-2226
>             Project: SystemML
>          Issue Type: Task
>            Reporter: Matthias Boehm
>            Priority: Major
>
> SystemML already support {{rowIndexMin}} and {{rowIndexMax}} in the unary aggregate framework, but in contrast to all other unary aggregates not its column-wise operations. Hence, users are forced to specify and execute unnecessary transpose operations. 
> This task aims to resolve this by adding the support for {{colIndexMin}} and {{colIndexMax}}. In detail, this entails (1) adding new tests for these aggregates, (2) extending the language layer by this new builtin function, (3) extending the hop and lop compilation, and (4) adding the necessary runtime support.
> In separate PRs we further can introduce additional rewrites to remove unnecessary operations in existing scripts. 



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)