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https://issues.apache.org/jira/browse/MAHOUT-1217?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13661850#comment-13661850
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Dan Filimon commented on MAHOUT-1217:
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Awesome, thank you Suneel!
> Nearest neighbor searchers sometimes fail to remove points
> ----------------------------------------------------------
>
> Key: MAHOUT-1217
> URL: https://issues.apache.org/jira/browse/MAHOUT-1217
> Project: Mahout
> Issue Type: Bug
> Components: Math
> Affects Versions: 0.8
> Reporter: Dan Filimon
>
> When updating a Centroid in StreamingKMeans, the Centroid needs to be removed
> and its updated version added.
> When removing points in a searcher that are already there, sometimes the
> searcher fails to return the closest point (the one being searched for)
> causing a RuntimeException.
> This has been observed for TF-IDF vectors with SquaredEuclideanDistance and
> CosineDistance and FastProjectionSearch.
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