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https://issues.apache.org/jira/browse/MAHOUT-1045?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13431999#comment-13431999
]
Hudson commented on MAHOUT-1045:
--------------------------------
Integrated in Mahout-Quality #1614 (See
[https://builds.apache.org/job/Mahout-Quality/1614/])
MAHOUT-1045: committing patch with changes to unit tests. CDbw numbers
still need user testing but ClusterEvaluater results are improved. All tests
run (Revision 1371250)
Result = SUCCESS
jeastman :
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1371250
Files :
*
/mahout/trunk/integration/src/main/java/org/apache/mahout/clustering/cdbw/CDbwEvaluator.java
*
/mahout/trunk/integration/src/main/java/org/apache/mahout/clustering/evaluation/ClusterEvaluator.java
*
/mahout/trunk/integration/src/test/java/org/apache/mahout/clustering/MAHOUT1045Test.java
*
/mahout/trunk/integration/src/test/java/org/apache/mahout/clustering/TestClusterEvaluator.java
*
/mahout/trunk/integration/src/test/java/org/apache/mahout/clustering/cdbw/TestCDbwEvaluator.java
> Cluster evaluators returning bad results
> ----------------------------------------
>
> Key: MAHOUT-1045
> URL: https://issues.apache.org/jira/browse/MAHOUT-1045
> Project: Mahout
> Issue Type: Bug
> Components: Clustering
> Affects Versions: 0.6, 0.7, 0.8
> Environment: Several environments and data sets
> Reporter: Pat Ferrel
> Fix For: 0.8
>
> Attachments: MAHOUT-1045.patch, MAHOUT-1045.patch, MAHOUT-1045.patch,
> MAHOUT-1045.patch, first-time-density-nan.txt
>
>
> With real world crawl data the Intra-cluster density from ClusterEvaluator is
> almost always NaN. The CDbw inter-cluster density is almost always 0. I have
> also seen several cases where CDbw fails to return any results but have not
> tracked down why yet.
> I have sent a link to an 8G data set that reproduces these errors to Jeff
> Eastman.
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