+100 On Apr 10, 2014 11:03 PM, "Sebastian Schelter (JIRA)" <j...@apache.org> wrote:
> Sebastian Schelter created MAHOUT-1508: > ------------------------------------------ > > Summary: SparseMatrix assign has huge performance problems > Key: MAHOUT-1508 > URL: https://issues.apache.org/jira/browse/MAHOUT-1508 > Project: Mahout > Issue Type: Bug > Components: Math > Reporter: Sebastian Schelter > Priority: Blocker > Fix For: 1.0 > > > I'm currently working with the new Scala DSL and running into a problem > with SparseMatrix and SparseRowMatrix. > > The problem is that they don't implement a specialized assign(Matrix > other, DoubleDoubleFunction f) function, but use the implementation from > AbstractMatrix which loops through all (!) possible entries. > > We have to fix this asap. > > > > -- > This message was sent by Atlassian JIRA > (v6.2#6252) >
