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 > > >
