[jira] Updated: (MAHOUT-376) Implement Map-reduce version of stochastic SVD

["Ted Dunning (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MAHOUT-376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ted Dunning updated MAHOUT-376:
-------------------------------

    Attachment: MAHOUT-376.patch

Here is a work-in-progress patch that illustrates how I plan to do the stochastic multiplication.

For moderate sized problems, this will be the major step required since all of the dense intermediate products will fit in memory.  For larger problems, additional tricks will be necessary.

> Implement Map-reduce version of stochastic SVD
> ----------------------------------------------
>
>                 Key: MAHOUT-376
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-376
>             Project: Mahout
>          Issue Type: Bug
>            Reporter: Ted Dunning
>         Attachments: MAHOUT-376.patch, sd-bib.bib, sd.pdf, sd.tex, Stochastic SVD using eigensolver trick.pdf
>
>
> See attached pdf for outline of proposed method.
> All comments are welcome.

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