Re: Mahout vectors/matrices/solvers on spark

FWIW, Givens streaming qr will be a bit more economical on memory than Householder's since it doesn't need the full buffer to compute R and doesn't need to keep entire original matrix around. On Thu, Jul 4, 2013 at 11:15 PM, Dmitriy Lyubimov wrote: > Ted, > > would it make sense to port parts o

Re: Mahout vectors/matrices/solvers on spark

Ted, would it make sense to port parts of QR in-core row-wise Givens solver out of SSVD to work on any Matrix? I know givens method is advertised as stable but not sure if it is the fastest accepted one. I guess they are all about the same. If yes, i will need also to port the UpperTriangular mat

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Re: Mahout vectors/matrices/solvers on spark

This is pretty exciting! Thanks Dmitriy. On Wed, Jul 3, 2013 at 10:12 PM, Dmitriy Lyubimov wrote: > Excellent! > > so I guess SSVD can be divorced from apache-math solver then. > > Actually it all shaping up surprisingly well, with scala DSL for both > in-core and mahout DRMS and spark solvers