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https://issues.apache.org/jira/browse/MAHOUT-516?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shannon Quinn updated MAHOUT-516:
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Attachment: MAHOUT-516.patch
Attached patch simply adds an argument to the Eigencuts algorithm to specify
the desired rank of the eigendecomposition.
Still working with the algorithm's author to draw up a method of calculating
the desired rank. Part of it involves: was the LanczosSolver written to follow
an existing implementation of any sort? I.e. is there literature somewhere that
specifies how it should be done?
> Eigencuts produces unexpected results
> -------------------------------------
>
> Key: MAHOUT-516
> URL: https://issues.apache.org/jira/browse/MAHOUT-516
> Project: Mahout
> Issue Type: Bug
> Components: Clustering
> Affects Versions: 0.4
> Reporter: Jeff Eastman
> Fix For: 0.5
>
> Attachments: jeastman.vcf, MAHOUT-516.patch
>
>
> Shannon reports he suspects a logic error in Eigencuts since it evidently
> does not produce exactly the expected results. It passes all current unit
> tests so we need to characterize the results differences and produce a test
> for it. Marking for 0.5 for now though we will fix it as soon as possible.
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