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Posted to dev@mahout.apache.org by "Dmitriy Lyubimov (JIRA)" <ji...@apache.org> on 2015/06/17 21:01:01 UTC

[jira] [Resolved] (MAHOUT-1719) Unary elementwise function operator and function fusions

     [ https://issues.apache.org/jira/browse/MAHOUT-1719?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dmitriy Lyubimov resolved MAHOUT-1719.
--------------------------------------
    Resolution: Fixed

> Unary elementwise function operator and function fusions
> --------------------------------------------------------
>
>                 Key: MAHOUT-1719
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1719
>             Project: Mahout
>          Issue Type: Improvement
>            Reporter: Dmitriy Lyubimov
>            Assignee: Dmitriy Lyubimov
>             Fix For: 0.10.2
>
>
> optimizer rewrites for something like 1 + drmX * dexp(drmX) => collapse into elementwiseFunc(f1(f2(drmX)) where f1 = 1 + x and f2 = exp(x). Also absolutes current scalar-elementwise physical operators used for stull like 1+drmX .
> PR https://github.com/apache/mahout/pull/135



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