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https://issues.apache.org/jira/browse/MAHOUT-1875?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15780120#comment-15780120
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ASF GitHub Bot commented on MAHOUT-1875:
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GitHub user smarthi opened a pull request:
https://github.com/apache/mahout/pull/264
MAHOUT-1875: Use faster shallowCopy for dense matices in blockify drm…
…/package.blockify(..)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/smarthi/mahout MAHOUT-1875
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/mahout/pull/264.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 #264
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commit 79fc120cea343d7a7a9ce4483117a58b48a71d1e
Author: smarthi <[email protected]>
Date: 2016-12-27T10:26:04Z
MAHOUT-1875: Use faster shallowCopy for dense matices in blockify
drm/package.blockify(..)
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> Use faster shallowCopy for dense matices in blockify drm/package.blockify(..)
> -----------------------------------------------------------------------------
>
> Key: MAHOUT-1875
> URL: https://issues.apache.org/jira/browse/MAHOUT-1875
> Project: Mahout
> Issue Type: Improvement
> Affects Versions: 0.12.2
> Reporter: Andrew Palumbo
> Assignee: Suneel Marthi
> Fix For: 0.13.0
>
>
> In {{sparkbindings.drm/package.blockify(...)}}, after testing the density of
> an incoming block, use {{DenseMatrix(blockAsArrayOfDoubles, true)}} to
> shallow copy the backing vector array into the {{DenseMatrix}}.
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