There was a variant of cholesky decomposition in Mahout at one time not so long ago. I would guess that it is still there.
It is difficult to make a truly distributed version of QR decomposition, but for the purposes of the randomized SVD in Mahout, it wasn't actually necessary to have a true QR. I don't have a pointer handy and I am not even sure that this code is still in Mahout. Sorry about that. On Wed, Apr 18, 2018 at 7:08 PM, QIFAN PU <[email protected]> wrote: > Hi, > > I'm wondering if distributed cholesky decomposition on mahout is supported > now. > From this doc: > https://mahout.apache.org/users/sparkbindings/ScalaSparkBindings.pdf > It seems that the implementation is single-node? > > Thanks, > Qifan >
