[jira] [Commented] (MAHOUT-1737) H20 implementation of AewUnaryFunc physical operator

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MAHOUT-1737?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14598520#comment-14598520 ] 

ASF GitHub Bot commented on MAHOUT-1737:
----------------------------------------

GitHub user avati opened a pull request:

    https://github.com/apache/mahout/pull/142

    MAHOUT-1737: implement AewUnaryFunc on H2O

    Signed-off-by: Anand Avati <av...@redhat.com>

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/avati/mahout MAHOUT-1737

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/mahout/pull/142.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #142
    
----
commit 2999d42e2db89511fe3481f4845f85e2785acd39
Author: Anand Avati <av...@redhat.com>
Date:   2015-06-23T22:40:45Z

    MAHOUT-1737: implement AewUnaryFunc on H2O
    
    Signed-off-by: Anand Avati <av...@redhat.com>

----


> H20 implementation of AewUnaryFunc physical operator
> ----------------------------------------------------
>
>                 Key: MAHOUT-1737
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1737
>             Project: Mahout
>          Issue Type: Improvement
>    Affects Versions: 0.10.1
>            Reporter: Dmitriy Lyubimov
>            Assignee: Anand Avati
>             Fix For: 0.10.2
>
>
> this physical operator allows to optimize elementwise expressions like 
> `dlog(X * X) + 1` where elementwise function compositions are detected and fused into one physical operator by logical optimizer. 
> This is an essential support.



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