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https://issues.apache.org/jira/browse/MAHOUT-376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dmitriy Lyubimov updated MAHOUT-376:
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Attachment: ssvd-CDH3-or-0.21.patch.gz
Apparently, i lost several commits when setting code with github. Some CLI
patches were lost. So, repared.
just ran thru Reuters dataset example with no problems in hadoop mode on a
single noder(with another performance branch, sibling of this one). The longest
job seems to be B*Bt job at the moment, will have to look at it to see if
there's a space for efficiency improvement.
But the branch with VectorWritable preprocessing is especially usable as it
saved on GC iterations a lot and runs much faster
> Implement Map-reduce version of stochastic SVD
> ----------------------------------------------
>
> Key: MAHOUT-376
> URL: https://issues.apache.org/jira/browse/MAHOUT-376
> Project: Mahout
> Issue Type: Improvement
> Components: Math
> Reporter: Ted Dunning
> Assignee: Ted Dunning
> Fix For: 0.5
>
> Attachments: MAHOUT-376.patch, Modified stochastic svd algorithm for
> mapreduce.pdf, QR decomposition for Map.pdf, QR decomposition for Map.pdf, QR
> decomposition for Map.pdf, sd-bib.bib, sd.pdf, sd.pdf, sd.pdf, sd.pdf,
> sd.tex, sd.tex, sd.tex, sd.tex, SSVD working notes.pdf, SSVD working
> notes.pdf, SSVD working notes.pdf, SSVD working notes.pdf, SSVD working
> notes.pdf, ssvd-CDH3-or-0.21.patch.gz, ssvd-CDH3-or-0.21.patch.gz,
> ssvd-CDH3-or-0.21.patch.gz, ssvd-CDH3-or-0.21.patch.gz,
> ssvd-CDH3-or-0.21.patch.gz, ssvd-CDH3-or-0.21.patch.gz,
> ssvd-CDH3-or-0.21.patch.gz, ssvd-CDH3-or-0.21.patch.gz, ssvd-m1.patch.gz,
> ssvd-m2.patch.gz, ssvd-m3.patch.gz, Stochastic SVD using eigensolver trick.pdf
>
>
> See attached pdf for outline of proposed method.
> All comments are welcome.
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