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https://issues.apache.org/jira/browse/MATH-429?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Luc Maisonobe resolved MATH-429.
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Resolution: Fixed
Fixed in subversion repository as of r1026666 for branche 2.X and as of
r1026667 for trunk.
Users can now choose among four different strategies to deal with empty
clusters:
* split the cluster with largest distance variance,
* split the cluster with largest number of points,
* create a cluster around the point farthest from its centroid,
* generate an error
The default is to split according to largest variance.
Thanks for reporting the issue.
> KMeansPlusPlusClusterer breaks by division by zero
> --------------------------------------------------
>
> Key: MATH-429
> URL: https://issues.apache.org/jira/browse/MATH-429
> Project: Commons Math
> Issue Type: Bug
> Affects Versions: 2.1
> Environment: Java, Windows
> Reporter: Erik van Ingen
> Priority: Blocker
> Attachments: KMeansPlusPlusClustererTest.java
>
> Original Estimate: 3h
> Remaining Estimate: 3h
>
> For a certain space, KMeansPlusPlusClusterer breaks. This is a blocker
> because this space occurs in our domain.
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