No. On Fri, Dec 2, 2011 at 4:03 AM, Dan Brickley (Commented) (JIRA) < j...@apache.org> wrote:
> > [ > https://issues.apache.org/jira/browse/MAHOUT-880?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13161562#comment-13161562] > > Dan Brickley commented on MAHOUT-880: > ------------------------------------- > > Does Mahout yet have a method to take a large full matrix, and convert it > sparse matrix format (losing zero values or perhaps if it makes sense, > near-zero values also...)? > > > Add some matrix method(like addition, subtraction, norm ... etc) to > DistributedRowMatrix > > > ---------------------------------------------------------------------------------------- > > > > Key: MAHOUT-880 > > URL: https://issues.apache.org/jira/browse/MAHOUT-880 > > Project: Mahout > > Issue Type: New Feature > > Components: Math > > Affects Versions: 0.6 > > Reporter: Wangda Tan > > Priority: Minor > > Labels: DistributedRowMatrix > > Attachments: MAHOUT-880.patch > > > > > > I'm a new to Mahout, I didn't find some basic matrix functions. This > make users cannot do many tasks by CLI or API, if user get some result > through existing map-reduce matrix operation (like svd), he cannot do > farther steps. I make a list for it: > > 1) Addition, Subtraction > > 2) Norm (like norm-1, norm-2, norm-frobenius) > > 3) Matrix compare > > 4) Get lower triangle, upper triangle and diagonal > > 5) Get identity and zero matrix > > 6) Put two or matrix to together: A = [A1, A2] > > 7) More linear equations solver method, like Gaussian elimination (maybe > it's hard to implement) > > 8) import and export CSV, ARFF ... (this will very useful when user want > to reuse result from or to other applications like MATLAB) > > I want to know is there any plan to do this, if so, I can make some > efforts to implement these. > > -- > This message is automatically generated by JIRA. > If you think it was sent incorrectly, please contact your JIRA > administrators: > https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa > For more information on JIRA, see: http://www.atlassian.com/software/jira > > >
