Yes. You can get the inverse from an SVD or emulate its effect. Can you share the actual mathematical specification for your problem?
If you can't, then there is little we can do to help. On Wed, Oct 7, 2015 at 11:35 PM, go canal <goca...@yahoo.com.invalid> wrote: > Unfortunately I do not know much details of these. The steps of these > calculation is passed to me from a research team. I am helping them with > coding part only. I myself is not good at math :-( > btw, I think Mahout supports out-of-core SVD, am I correct ? If so, I can > get inverse of matrix from SVD right ? thanks, canal > > > On Monday, October 5, 2015 2:25 PM, Ted Dunning < > ted.dunn...@gmail.com> wrote: > > > That isn't enough detail. > > How do you mean to compute degrees of freedom? WHy do you need the inverse > to do this? > > Where did you get this algorithm? > > Is this even appropriate at large scale? > > Is this a stable computation? > > > > On Sun, Oct 4, 2015 at 11:18 PM, go canal <goca...@yahoo.com.invalid> > wrote: > > > I will be more than interested to extend to complex double, when the > > solver is ready for double data type. thanks, canal > > > > > > On Monday, October 5, 2015 2:02 PM, Ted Dunning < > > ted.dunn...@gmail.com> wrote: > > > > > > On Sun, Oct 4, 2015 at 10:32 PM, go canal <goca...@yahoo.com.invalid> > > wrote: > > > > > in fact i need to support both double and complex double for either > > > distributed memory based or out-of-core. > > > > > > Ahh... > > > > Well Mahout doesn't support complex anything. So this isn't going to help > > you. > > > > > > > > >
