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From "Matthias Boehm (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (SYSTEMML-2035) Sparse maxpooling_backward returns incorrect results
Date Sat, 02 Dec 2017 23:06:00 GMT

     [ https://issues.apache.org/jira/browse/SYSTEMML-2035?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matthias Boehm closed SYSTEMML-2035.
------------------------------------
       Resolution: Fixed
         Assignee: Matthias Boehm
    Fix Version/s: SystemML 1.0

> Sparse maxpooling_backward returns incorrect results
> ----------------------------------------------------
>
>                 Key: SYSTEMML-2035
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-2035
>             Project: SystemML
>          Issue Type: Bug
>            Reporter: Matthias Boehm
>            Assignee: Matthias Boehm
>             Fix For: SystemML 1.0
>
>
> The existing tests for maxpooling_backward always use dense data, which hides underlying
correctness issues. These issues are due to invalid handling of empty sparse rows, empty ranges,
and partial range entries with negative values. In all these cases, the maximum value is 0,
which position determines the index for adding corresponding values.



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