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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: QR decomposition for Map.pdf
QR step doc is ready for review.
Especially sections 3.2 and on which i still haven't worked up in the actual
code. These reflect my original ideas to deal with blockwise QR in a MapReduce
settings. I am probably retracing some block computations already found
elsewhere (such as in LAPack) but i think it may actually work out ok.
> 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,
> sd-bib.bib, sd.pdf, sd.pdf, sd.pdf, sd.pdf, sd.tex, sd.tex, sd.tex, sd.tex,
> Stochastic SVD using eigensolver trick.pdf
>
>
> See attached pdf for outline of proposed method.
> All comments are welcome.
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