You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@mahout.apache.org by "Hudson (JIRA)" <ji...@apache.org> on 2012/08/09 19:20:19 UTC
[jira] [Commented] (MAHOUT-1045) Cluster evaluators returning bad
results
[ 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.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira