Shannon Quinn created MAHOUT-1159:
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Summary: Add SSVD option to SpectralKMeans
Key: MAHOUT-1159
URL: https://issues.apache.org/jira/browse/MAHOUT-1159
Project: Mahout
Issue Type: Improvement
Components: Clustering
Affects Versions: 0.8
Reporter: Shannon Quinn
Assignee: Shannon Quinn
Priority: Minor
Fix For: 0.8
This adds SSVD as an option for eigensolver, in addition to the [default]
Lanczos solver. Testing indicated it yielded similar clustering accuracy with a
possible performance boost.
This patch includes other small fixes, such as using the default "tempDir" for
intermediate calculations.
The initialization of the SSVD solver is a bit awkward, with specifying the
number of reducers. I hard-coded this at 10; is there a better solution?
Perhaps making it an optional parameter to the SSVD constructor?
[Thanks to University of Pittsburgh CS undergraduates Andrew King, Pawan
Solanki, and Philip Schinis for working on this.]
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