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
Sorry about that.
Post by QIFAN PU
I'm wondering if distributed cholesky decomposition on mahout is supported
It seems that the implementation is single-node?