[ublas] dense array of sparse vectors

From: Nico Galoppo (nico_at_[hidden])
Date: 2006-10-11 19:22:16

Hi everybody,

I'd like to choose the appropriate ublas matrix type for a matrix that has very 
few non-zero entries in each row, but every row has atleast a few non-zeros. (In 
fact, every row has exactly three of them).

Let's call this matrix J. I'd like to perform matrix multiplies M * trans(J) and 
vector multiplies J * x efficiently. Which of the ublas sparse types 
(compressed_matrix, gvov, ...) have those matrix-matrix multiplies specialized?

Thanks!

--nico

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