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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAHOUT-1264) Performance optimizations in RecommenderJob
Date Mon, 17 Jun 2013 08:16:20 GMT

    [ https://issues.apache.org/jira/browse/MAHOUT-1264?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13685086#comment-13685086
] 

Hudson commented on MAHOUT-1264:
--------------------------------

Integrated in Mahout-Quality #2091 (See [https://builds.apache.org/job/Mahout-Quality/2091/])
    MAHOUT-1264 Performance optimizations in RecommenderJob (Revision 1493660)

     Result = SUCCESS
ssc : 
Files : 
* /mahout/trunk/CHANGELOG
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/item/AggregateAndRecommendReducer.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/item/ItemFilterAsVectorAndPrefsReducer.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/item/ItemFilterMapper.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/item/ItemIDIndexMapper.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/item/ItemIDIndexReducer.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/item/PartialMultiplyMapper.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/item/RecommenderJob.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/item/SimilarityMatrixRowWrapperMapper.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/item/ToUserVectorsReducer.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/item/ToVectorAndPrefReducer.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/item/UserVectorSplitterMapper.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/item/VectorAndPrefsWritable.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/preparation/ToItemVectorsMapper.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/preparation/ToItemVectorsReducer.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/math/VectorWritable.java

                
> Performance optimizations in RecommenderJob
> -------------------------------------------
>
>                 Key: MAHOUT-1264
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1264
>             Project: Mahout
>          Issue Type: Improvement
>          Components: Collaborative Filtering
>            Reporter: Sebastian Schelter
>            Assignee: Sebastian Schelter
>             Fix For: 0.8
>
>
> Rework RecommenderJob to minimize object instantiations and use MultipleInputs where
possible.

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