Re: Power iteration clustering

2015-05-26 Thread Debasish Das
Ok I thought we tried that and found graphx based flow was faster due to some inherent problem structure (graphx can compute K eigenvectors at the same time) I will report some stats on row similarities experiments on vector blocked index row matrix multiply vs current pic flow... On May 26, 2015

Re: Power iteration clustering

2015-05-26 Thread Joseph Bradley
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 wrote: > Hi, > > What was the motivation to write power iteration clustering using graphx > and not a vector matrix multiplication over