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https://issues.apache.org/jira/browse/MAHOUT-818?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13116041#comment-13116041
]
Hudson commented on MAHOUT-818:
-------------------------------
Integrated in Mahout-Quality #1066 (See
[https://builds.apache.org/job/Mahout-Quality/1066/])
MAHOUT-818: Patch to filter canopies based upon numPoints. All tests run
jeastman :
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1176603
Files :
*
/mahout/trunk/core/src/main/java/org/apache/mahout/clustering/canopy/CanopyConfigKeys.java
*
/mahout/trunk/core/src/main/java/org/apache/mahout/clustering/canopy/CanopyDriver.java
*
/mahout/trunk/core/src/main/java/org/apache/mahout/clustering/canopy/CanopyMapper.java
*
/mahout/trunk/core/src/main/java/org/apache/mahout/clustering/canopy/CanopyReducer.java
*
/mahout/trunk/core/src/main/java/org/apache/mahout/common/commandline/DefaultOptionCreator.java
*
/mahout/trunk/core/src/test/java/org/apache/mahout/clustering/canopy/TestCanopyCreation.java
*
/mahout/trunk/examples/src/main/java/org/apache/mahout/clustering/display/DisplayCanopy.java
*
/mahout/trunk/examples/src/main/java/org/apache/mahout/clustering/display/DisplayFuzzyKMeans.java
> Canopy Emits Too Many Trivial Clusters
> --------------------------------------
>
> Key: MAHOUT-818
> URL: https://issues.apache.org/jira/browse/MAHOUT-818
> Project: Mahout
> Issue Type: Improvement
> Components: Clustering
> Affects Versions: 0.5
> Reporter: Jeff Eastman
> Assignee: Jeff Eastman
> Fix For: 0.6
>
> Attachments: MAHOUT-818.patch
>
>
> Users of Canopy clustering report that the single reducer used in the
> mapreduce version often takes dispropportately long to process the results of
> multiple mappers. This patch introduces a new Canopy CLI argument, -cf
> (--clusterFilter), which if present establishes a lower bound on the
> numPoints of canopies output from the algorithm. The default value for this
> filter is 0, and all canopies are output. Setting -cf 1 would eliminate any
> canopies which contain only 1 point from subsequent processing steps.
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