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https://issues.apache.org/jira/browse/MAHOUT-1578?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Musselman resolved MAHOUT-1578.
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Resolution: Fixed
Looks resolved; re-open if needed.
> 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
> Assignee: Sebastian Schelter
> Labels: legacy
> Fix For: 0.10.0
>
>
> 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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