Nicolas, I think you ahve to attach the patch as a file.
On Thu, Jul 22, 2010 at 12:52 PM, Nicolas Maillot (JIRA) <[email protected]>wrote: > > [ > https://issues.apache.org/jira/browse/MAHOUT-446?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel] > > Nicolas Maillot updated MAHOUT-446: > ----------------------------------- > > Status: Patch Available (was: Open) > > > Mahalanobis Distance + Singular Value Decomposition > > --------------------------------------------------- > > > > Key: MAHOUT-446 > > URL: https://issues.apache.org/jira/browse/MAHOUT-446 > > Project: Mahout > > Issue Type: New Feature > > Components: Classification > > Affects Versions: 0.4 > > Environment: GNU/Linux Ubuntu Lucid Lynx running in VMWare fusion > 2.0.7. > > Reporter: Nicolas Maillot > > Original Estimate: 0h > > Remaining Estimate: 0h > > > > This patch contains an implementation of the Mahalanobis distance + a > unit test. > > As explained in wikipedia ( > http://en.wikipedia.org/wiki/Mahalanobis_distance) , it is a useful way > of determining similarity of an unknown sample set to a known one. It > differs from Euclidean distance in that it takes into account the > correlations of the data set and is scale-invariant. > > Also contained in the patch: > > -A port of the SingularValueDecomposition Class to the Matrix data > structure. > > -An embryonic port of the matrix.linalg Algebra class to the > Matrix/Vector data structure. > > -- > This message is automatically generated by JIRA. > - > You can reply to this email to add a comment to the issue online. > >
