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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAHOUT-1172) Replace org.apache.mahout.cf.taste.common.TopK with Lucene's PriorityQueue
Date Mon, 25 Mar 2013 09:43:15 GMT

    [ https://issues.apache.org/jira/browse/MAHOUT-1172?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13612519#comment-13612519
] 

Hudson commented on MAHOUT-1172:
--------------------------------

Integrated in Mahout-Quality #1930 (See [https://builds.apache.org/job/Mahout-Quality/1930/])
    MAHOUT-1172 Replace org.apache.mahout.cf.taste.common.TopK with Lucene's PriorityQueue
(Revision 1460541)

     Result = SUCCESS
ssc : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1460541
Files : 
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/common/FixedSizePriorityQueue.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/common/MinK.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/common/TopK.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/MutableRecommendedItem.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/TopItemsQueue.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/als/MutableRecommendedItem.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/als/PredictionMapper.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/als/TopItemQueue.java
* /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/UserVectorSplitterMapper.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/similarity/item/ItemSimilarityJob.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/similarity/item/TopSimilarItemsQueue.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/similarity/precompute/SimilarItem.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/math/hadoop/similarity/cooccurrence/MutableElement.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/math/hadoop/similarity/cooccurrence/RowSimilarityJob.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/math/hadoop/similarity/cooccurrence/TopElementsQueue.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/math/hadoop/similarity/cooccurrence/Vectors.java
* /mahout/trunk/core/src/test/java/org/apache/mahout/cf/taste/common/TopKMinKTest.java
* /mahout/trunk/core/src/test/java/org/apache/mahout/cf/taste/hadoop/TopItemsQueueTest.java
* /mahout/trunk/core/src/test/java/org/apache/mahout/cf/taste/hadoop/als/TopItemQueueTest.java
* /mahout/trunk/core/src/test/java/org/apache/mahout/cf/taste/hadoop/item/RecommenderJobTest.java

                
> Replace org.apache.mahout.cf.taste.common.TopK with Lucene's PriorityQueue
> --------------------------------------------------------------------------
>
>                 Key: MAHOUT-1172
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1172
>             Project: Mahout
>          Issue Type: Improvement
>    Affects Versions: 0.8
>            Reporter: Sebastian Schelter
>             Fix For: 0.8
>
>         Attachments: MAHOUT-1172.patch
>
>
> Using Lucene's PriorityQueue allows for faster and more memory-efficient top-k selection.

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