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Seminar Details


Date 1-4-2004
Time 16:00
Room/Location Sala conferenze, 322, 3 piano
Title Title: Iterative methods for ill-posed problems with nonnegativity constraint
Speaker Prof. Daniela Calvetti
Affiliation Department of Mathematics Case University 10900 Euclid Avenue Cleveland, OH 44106
Link http://www.cwru.edu/
Abstract Abstract: In this talk we present modifications of some popular iterative methods for the solution of linear systems arising from the discretization of linear ill-posed problems which force the nonnegativity of the computed solution. Computed examples clearly show that the methods can be much more efficient that other methods proposed in the literature and often determine a qualitatively superior solution. This talk is based on work with Germana Landi, Lothar Reichel and Fiorella Sgallari.
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