Common On Mon, Feb 14, 2011 at 5:09 PM, Dmitriy Lyubimov <[email protected]> wrote:
> Question -- > there seems to exist 2 versions of MahoutTestCase -- > o.a.m.common.MahoutTestCase and o.a.m.math.MahoutTestCase. > > Which one is to use ? > > Thanks. > -Dmitriy > > On Mon, Feb 14, 2011 at 4:16 PM, Dmitriy Lyubimov (JIRA) > <[email protected]> wrote: > > > > [ > https://issues.apache.org/jira/browse/MAHOUT-593?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel] > > > > Dmitriy Lyubimov updated MAHOUT-593: > > ------------------------------------ > > > > Attachment: SSVD-givens-CLI.pdf > > > > command line help document. Hope that helps with understanding the usage. > > > >> Backport of Stochastic SVD patch (Mahout-376) to hadoop 0.20 to ensure > compatibility with current Mahout dependencies. > >> > ---------------------------------------------------------------------------------------------------------------------- > >> > >> Key: MAHOUT-593 > >> URL: https://issues.apache.org/jira/browse/MAHOUT-593 > >> Project: Mahout > >> Issue Type: New Feature > >> Components: Math > >> Affects Versions: 0.4 > >> Reporter: Dmitriy Lyubimov > >> Fix For: 0.5 > >> > >> Attachments: MAHOUT-593.patch.gz, SSVD-givens-CLI.pdf > >> > >> > >> Current Mahout-376 patch requries 'new' hadoop API. Certain elements of > that API (namely, multiple outputs) are not available in standard hadoop > 0.20.2 release. As such, that may work only with either CDH or 0.21 > distributions. > >> In order to bring it into sync with current Mahout dependencies, a > backport of the patch to 'old' API is needed. > >> Also, some work is needed to resolve math dependencies. Existing patch > relies on apache commons-math 2.1 for eigen decomposition of small matrices. > This dependency is not currently set up in the mahout core. So, certain > snippets of code are either required to go to mahout-math or use Colt eigen > decompositon (last time i tried, my results were mixed with that one. It > seems to produce results inconsistent with those from mahout-math > eigensolver, at the very least, it doesn't produce singular values in sorted > order). > >> So this patch is mainly moing some Mahout-376 code around. > > > > -- > > This message is automatically generated by JIRA. > > - > > For more information on JIRA, see: > http://www.atlassian.com/software/jira > > > > > > >
