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https://issues.apache.org/jira/browse/MAHOUT-1578?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14027666#comment-14027666
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ASF GitHub Bot commented on MAHOUT-1578:
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GitHub user sscdotopen opened a pull request:
https://github.com/apache/mahout/pull/16
MAHOUT-1578 Optimizations in matrix serialization
MAHOUT-1578: Optimizations in matrix serialization
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/sscdotopen/mahout MAHOUT-1578
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/mahout/pull/16.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 #16
----
commit 645604c7a81762df19bfe3023fcc474490f4c183
Author: ssc <[email protected]>
Date: 2014-06-11T11:52:11Z
MAHOUT-1578 Optimizations in matrix serialization
----
> Optimizations in matrix serialization
> -------------------------------------
>
> Key: MAHOUT-1578
> URL: https://issues.apache.org/jira/browse/MAHOUT-1578
> Project: Mahout
> Issue Type: Improvement
> Components: Math
> Reporter: Sebastian Schelter
> Fix For: 1.0
>
>
> MatrixWritable contains inefficient code in a few places:
>
> * type and size are stored with every vector, although they are the same for
> every vector
> * in some places vectors are added to the matrix via assign() in places
> where we could directly use the instance
>
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