The reason it doesn't do the iterations is that I didn't realize how important they were at the time I wrote the sequential implementations.
I wrote the implementations largely as practice attempts before talking too much about the map-reduce implementation. Dmitriy was primary on the map-reduce implementation and added some significant capabilities like the power iteration and PCA options. It would be excellent to back-port those capabilities to the sequential versions. D's upcoming scala implementations should be interesting as well. On Fri, Aug 2, 2013 at 10:49 AM, Dmitriy Lyubimov <[email protected]> wrote: > it would seem it just was not implemented. > > It is pretty easy though. I have in-core implementation ported to scala dsl > [1] which will find its way into Mahout -0.9 as a part of MAHOUT-1297 if i > am successful in convincing PMC it is of use to community. > > > On Fri, Aug 2, 2013 at 9:32 AM, Ahmed Elgohary <[email protected]> wrote: > > > Hi, > > I am trying to use SequentialBigSvd as an in-memory implementation for > the > > ssvd. But, It is not clear to me if there is a reason behind not > supporting > > power iterations (i.e. power iterations Q is always set to zero) in the > > current implementation. Are power iterations not needed in small scale > > settings? > > > > thanks, > > > > --ahmed > > >
