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From "Mike Dusenberry (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (SYSTEMML-1921) Bug in recurrent layers when only returning final output
Date Wed, 20 Sep 2017 20:33:00 GMT

     [ https://issues.apache.org/jira/browse/SYSTEMML-1921?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Mike Dusenberry closed SYSTEMML-1921.
-------------------------------------

> Bug in recurrent layers when only returning final output
> --------------------------------------------------------
>
>                 Key: SYSTEMML-1921
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-1921
>             Project: SystemML
>          Issue Type: Bug
>            Reporter: Mike Dusenberry
>            Assignee: Mike Dusenberry
>             Fix For: SystemML 1.0
>
>
> Currently, there is a typo in the {{backward}} functions of the recurrent layers when
{{given_sequences}} is false.  Specifically, when only the final time-step's output was desired
from the forward functions, {{out}} and {{dout}} will be of shape {{(N, M)}}, and within the
{{backward}} functions, {{dout}} will be padded with zeros for the earlier time-steps to enlarge
the shape to {{(N, T*M)}}.  While the goal of the logic and the associated comments were correct,
there was a typo in which the shape was instead enlarged to {{(T*D)}}.



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