An interior point approach for medium and large nonnegative linear least-squares problems is proposed. Global and locally quadratic convergence is shown even if a degenerate solution is approached. Viable approaches for implementation are discussed and numerical results are provided.
Technical Report 1/2005, Dipartimento di Energetica 'S. Stecco', Universita di Firenze, Italia
View An interior Newton-like method for nonnegative least-squares problems with degenerate solution