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https://issues.apache.org/jira/browse/MAHOUT-845?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13130725#comment-13130725
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Jeff Eastman commented on MAHOUT-845:
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+1 We could easily add a static method to AbstractCluster, or add an operator
to Vector as you suggest. If getting the n largest element indices (and values)
from a Vector is useful to other applications this would be a good place to add
it. It seems to me the method needs to return another sparse vector containing
just the n top term indices and values. The same dictionary would still be
valid since the indices are identical so it does not need to be involved.
Something like:
Vector:
Vector getTopElements(n);
> Make cluster top terms code more reusable
> -----------------------------------------
>
> Key: MAHOUT-845
> URL: https://issues.apache.org/jira/browse/MAHOUT-845
> Project: Mahout
> Issue Type: Improvement
> Components: Clustering
> Reporter: Frank Scholten
> Priority: Minor
>
> When working with Mahout text clustering I find that I keep writing code
> similar to the contents of
> public static String getTopFeatures(Cluster cluster, String[] dictionary, int
> numTerms)
> in ClusterDumper in order to determine cluster labels.
> I think it would be useful if (parts of) this code are added to the cluster
> or vector API so that you could do something like
> Cluster cluster = ... // get the cluster from seq file iterable
> String clusterLabel = cluster.getTopTerms(1, dictionary); // Do something
> with the label
> I think this would make it easier to export and post-process clustering
> results, like indexing or storing them elsewhere.
> Thoughts?
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