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https://issues.apache.org/jira/browse/SPARK-2429?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yu Ishikawa updated SPARK-2429:
-------------------------------
    Attachment:     (was: The Result of Benchmarking a Hierarchical 
Clustering.pdf)

> Hierarchical Implementation of KMeans
> -------------------------------------
>
>                 Key: SPARK-2429
>                 URL: https://issues.apache.org/jira/browse/SPARK-2429
>             Project: Spark
>          Issue Type: New Feature
>          Components: MLlib
>            Reporter: RJ Nowling
>            Assignee: Yu Ishikawa
>            Priority: Minor
>         Attachments: The Result of Benchmarking a Hierarchical Clustering.pdf
>
>
> Hierarchical clustering algorithms are widely used and would make a nice 
> addition to MLlib.  Clustering algorithms are useful for determining 
> relationships between clusters as well as offering faster assignment. 
> Discussion on the dev list suggested the following possible approaches:
> * Top down, recursive application of KMeans
> * Reuse DecisionTree implementation with different objective function
> * Hierarchical SVD
> It was also suggested that support for distance metrics other than Euclidean 
> such as negative dot or cosine are necessary.



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