Could you help to provide a test case to verify this issue and open a JIRA to track this? Also, are you interested in submit a PR to fix it? Thanks.
Sent from my Google Nexus 5 On Jul 27, 2014 11:07 AM, "Aureliano Buendia" <buendia...@gmail.com> wrote: > Hi, > > The recently added NNLS implementation in MLlib returns wrong solutions. > This is not data specific, just try any data in R's nnls, and then the same > data in MLlib's NNLS. The results are very different. > > Also, the elected algorithm Polyak(1969) is not the best one around. The > most popular one is Lawson-Hanson (1974): > > http://en.wikipedia.org/wiki/Non-negative_least_squares#Algorithms > > >
