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https://issues.apache.org/jira/browse/MAHOUT-1813?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15196553#comment-15196553
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Hudson commented on MAHOUT-1813:
--------------------------------
SUCCESS: Integrated in Mahout-Quality #3320 (See
[https://builds.apache.org/job/Mahout-Quality/3320/])
MAHOUT-1813: Functional 'apply' DSL for distributed and in-memory (apalumbo:
rev ff51ab448b07c5b218d1a08ed5c1194ad5b24179)
* math-scala/src/main/scala/org/apache/mahout/math/drm/DrmLikeOps.scala
*
math-scala/src/test/scala/org/apache/mahout/math/scalabindings/MatrixOpsSuite.scala
*
math-scala/src/test/scala/org/apache/mahout/math/drm/RLikeDrmOpsSuiteBase.scala
* math-scala/src/main/scala/org/apache/mahout/math/scalabindings/MatrixOps.scala
* math-scala/src/main/scala/org/apache/mahout/math/scalabindings/package.scala
> Functional "apply" DSL for distributed and in-memory matrices
> -------------------------------------------------------------
>
> Key: MAHOUT-1813
> URL: https://issues.apache.org/jira/browse/MAHOUT-1813
> Project: Mahout
> Issue Type: New Feature
> Affects Versions: 0.11.2
> Reporter: Andrew Palumbo
> Assignee: Andrew Palumbo
> Fix For: 0.12.0
>
>
> We have functional "Assign" for in-memory matrices, e.g.:
> {code}
> mxA := { x => x + 1 }
> mxA ::= { x=> x * 2 }
> {code}
> However, we lack similar unary elementwise function capability with
> distributed matrices, because distributed matrices are logically immutable.
> The suggestion here is to use apply(func) to augment that capability for DRMs:
> {code}
> drmA(x => x + 1)
> drmA(x => 2 * x)
> {code}
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