On Saturday, April 26, 2014 10:34:52 AM UTC-4, Ethan Anderes wrote:
> My problem is sparse in the sense that the 2500x2500 matrices I'm working > with are low rank. > Sparsity means that the matrix is mostly zeros (in which case you sometimes use special algorithms). This has nothing to do with whether the matrix is low rank. eye(n,n) is sparse but full rank, and ones(n,n) is non-sparse but rank 1.
