Re: [ublas] nonsquare system of equations - corrected

From: Sorkin Dima (dsorkin_at_[hidden])
Date: 2006-11-13 09:12:55

On Mon, 13 Nov 2006, Gunter Winkler wrote:
>> LSQR problem
> 1. Tim Davis: http://www.cise.ufl.edu/research/sparse/
Ok. This I should explore. I only remember this site for
UMFPACK LU, which is for square matrices (?)

> 2. ITL: http://www.osl.iu.edu/research/itl/
But here, all algorithms are for square matrices
( I don't have good knowledge about iterative methods,
   but as far as I can see ... )

It seems that the only suppoted method for nonsquare solving of
Ax=b is A'Ax = A'x.

Regards,
  Dima.