Thank you, Ted. I will review this and will continue at next opportunity (Saturday, perhaps). I think if i can get thru this, the rest is really a simple thing.
Two things though i had to make: -- i had to change dependency to CDH3 (or i guess 0.21 will work too) as i used new MR api and stock 0.20.2 doesn't have multiple outputs. I guess nobody these days is running stock 0.20.2 really, so i don't perceive that as a big issue, but if we want to be 100% compatible with current mahout dependencies, i will have to create a backport version of it just for the multiple outputs to work with 0.20.2. -- i also ended up using eigen from apache commons math 2.1 . But math module has dependency on it but core module (which is also math heavy ) doesn't have such a dependency. Is it a big deal if we add one to the core module too? Thanks. -Dima. On Tue, Oct 12, 2010 at 2:50 PM, Ted Dunning (JIRA) <[email protected]> wrote: > > [ > https://issues.apache.org/jira/browse/MAHOUT-376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel] > > Ted Dunning updated MAHOUT-376: > ------------------------------- > > Attachment: sd.pdf > sd.tex > > Updated outline document to show corrected form of block-wise extraction of > Q > > > 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, sd-bib.bib, sd.pdf, sd.pdf, sd.tex, sd.tex, Stochastic > SVD using eigensolver trick.pdf > > > > > > See attached pdf for outline of proposed method. > > All comments are welcome. > > -- > This message is automatically generated by JIRA. > - > You can reply to this email to add a comment to the issue online. > >
