Pat Ferrel created MAHOUT-1045:
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Summary: 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: 0.7, 0.6, 0.8
Environment: Several environments and data sets
Reporter: Pat Ferrel
Fix For: 0.8
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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