Artículos de revistas
Steered sequential projections for the inconsistent convex feasibility problem
Registro en:
Nonlinear Analysis-theory Methods & Applications. Pergamon-elsevier Science Ltd, v. 59, n. 3, n. 385, n. 405, 2004.
0362-546X
WOS:000224657000008
10.1016/j.na.2004.07.018
Autor
Censor, Y
De Pierro, AR
Zaknoon, M
Institución
Resumen
We study a steered sequential gradient algorithm which minimizes the sum of convex functions by proceeding cyclically in the directions of the negative gradients of the functions and using steered step-sizes. This algorithm is applied to the convex feasibility problem by minimizing a proximity function which measures the sum of the Bregman distances to the members of the family of convex sets. The resulting algorithm is a new steered sequential Bregman projection method which generates sequences that converge if they are bounded, regardless of whether the convex feasibility problem is or is not consistent. For orthogonal projections and affine sets the boundedness condition is always fulfilled. (C) 2004 Elsevier Ltd. All rights reserved. 59 3 385 405