That's a good question; I could imagine it being much more efficient if kept in a BlockMatrix and using BLAS2 ops.
On Sat, May 23, 2015 at 8:09 PM, Debasish Das <debasish.da...@gmail.com> wrote: > Hi, > > What was the motivation to write power iteration clustering using graphx > and not a vector matrix multiplication over similarity matrix represented > as say coordinate matrix ? > > We can use gemv in that flow to block the computation. > > Over graphx can we do all k eigen vector computation together because I > don't see that in a vector matrix multiply flow ? On the other side vector > matrix multiply flow is generic for kernel regression or classification > flows. > > Thanks. > Deb >
