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https://issues.apache.org/jira/browse/MAHOUT-1578?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14029470#comment-14029470
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Hudson commented on MAHOUT-1578:
--------------------------------
SUCCESS: Integrated in Mahout-Quality #2651 (See
[https://builds.apache.org/job/Mahout-Quality/2651/])
MAHOUT-1578 Optimizations in matrix serialization (ssc) closes apache/mahout#16
(ssc: rev a8e09cd3aa1c9d6fdda2eaf84f86a06a33963658)
* mrlegacy/src/main/java/org/apache/mahout/math/MatrixWritable.java
* mrlegacy/src/main/java/org/apache/mahout/math/VectorWritable.java
* CHANGELOG
> 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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