[jira] [Commented] (SYSTEMML-1516) Improve output size calculation in conv2d & max_pool2d

["Mike Dusenberry (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SYSTEMML-1516?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15966684#comment-15966684 ] 

Mike Dusenberry commented on SYSTEMML-1516:
-------------------------------------------

[PR 459 | https://github.com/apache/incubator-systemml/pull/459] submitted.

> Improve output size calculation in conv2d & max_pool2d
> ------------------------------------------------------
>
>                 Key: SYSTEMML-1516
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-1516
>             Project: SystemML
>          Issue Type: Sub-task
>            Reporter: Mike Dusenberry
>            Assignee: Mike Dusenberry
>            Priority: Minor
>
> The calculation of the output sizes (`Hout`, `Wout`) for conv2d and
> max_pool2d layers rely on a flooring operation to only allow for valid
> operations.  Currently, we simply rely on the `as.integer` call to
> implicitly perform this flooring operation during truncation of the double
> to an integer.  While this gives the correct results, it is less
> readable than it should be, and relies on truncation behavior than explicit mathematical behavior.  We should simply add an explicit `floor`
> operation to each calculation.



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