Doh. Of course. I have been worried about sparsity so long that mean subtraction causes an autonomic twitch.
On Thu, Jun 23, 2011 at 1:25 PM, Jake Mannix <[email protected]> wrote: > > with 2 dense matrices being multiplied will it? And it is conceivable > that > > we will have billions of rows to do this computation on for my dataset. > > > > your matrix is already dense, is it not? mean subtraction won't make it > any *more* dense.
