Skip to main content

Advertisement

Log in

Iterative Methods of Solving Stochastic Convex Feasibility Problems and Applications

  • Published:
Computational Optimization and Applications Aims and scope Submit manuscript

Abstract

The stochastic convex feasibility problem (SCFP) is the problem of finding almost common points of measurable families of closed convex subsets in reflexive and separable Banach spaces. In this paper we prove convergence criteria for two iterative algorithms devised to solve SCFPs. To do that, we first analyze the concepts of Bregman projection and Bregman function with emphasis on the properties of their local moduli of convexity. The areas of applicability of the algorithms we present include optimization problems, linear operator equations, inverse problems, etc., which can be represented as SCFPs and solved as such. Examples showing how these algorithms can be implemented are also given.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Subscribe and save

Springer+ Basic
$34.99 /Month
  • Get 10 units per month
  • Download Article/Chapter or eBook
  • 1 Unit = 1 Article or 1 Chapter
  • Cancel anytime
Subscribe now

Buy Now

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. Ya. Alber, “Metric and generalized projection operators in Banach spaces,” in Functional Differential Equations, M.E. Drakhlin and E. Litsyn (Eds.), The Research Institute of the College of Iudea and Samaria Publications: Kedumim-Ariel, Israel, 1993, pp. 1-21.

    Google Scholar 

  2. Ya. Alber and D. Butnariu, “Convergence of Bregman-projection methods for solving convex feasibility problems in reflexive Banach spaces,” J. Optim. Theory Appl., vol. 92, pp. 33-61, 1997.

    Google Scholar 

  3. J.-P. Aubin and H. Frankowska, Set-Valued Analysis, Birkhäuser: Basel, 1990.

    Google Scholar 

  4. H.H. Bauschke and J.M. Borwein, “On projection algorithms for solving convex feasibility problems,” SIAM Rev., vol. 38, pp. 367-426, 1996.

    Google Scholar 

  5. H.H. Bauschke and J.M. Borwein, “Legendre functions and the method of random Bregman projections,” J. Convex Anal., vol. 4, pp. 27-67, 1997.

    Google Scholar 

  6. L.M. Bregman, “The relaxation method for finding common points of convex sets and its application to the solution of convex programming,” USSR Comp. Math. and Math. Phys., vol. 7, pp. 200-217, 1967.

    Google Scholar 

  7. H. Brezis, Analyse Fonctionelle: Théorie et Applications, Masson: Paris, 1983.

    Google Scholar 

  8. F.E. Browder, “Nonlinear operators and nonlinear equations of evolution in banach spaces,” in Proceedings of Symposia in Pure Mathematics, vol. XVIII, Part 2, American Mathematical Society: Providence, Rhode Island, 1976.

    Google Scholar 

  9. R.S. Burachik, “Generalized proximal point methods for the variational inequality problem,” Ph.D. Thesis, Instituto de Matemática Pura e Aplicada, Rio de Janeiro, Brazil, 1995.

    Google Scholar 

  10. D. Butnariu, “The expected-projection methods: Its behavior and applications to linear operator equations and convex optimization,” J. Applied Analysis, vol. 1, no. 1, pp. 95-108, 1995.

    Google Scholar 

  11. D. Butnariu and Y. Censor, “Strong convergence of almost simultaneous projection methods in Hilbert spaces,” J. Comput. Appl. Math., vol. 53, pp. 33-42, 1994.

    Google Scholar 

  12. D. Butnariu, Y. Censor, and S. Reich, “Iterative averaging of entropic projections for solving stochastic convex feasibility problems,” Comput. Optim. Appl., vol. 8, pp. 21-38, 1997.

    Google Scholar 

  13. D. Butnariu and S.D. Flå m, “Strong convergence of expected projection methods in Hilbert spaces,” Numer. Funct. Anal. Optim., vol. 16, pp. 601-636, 1995.

    Google Scholar 

  14. D. Butnariu and A.N. Iusem, “Local moduli of convexity and their applications to finding almost common fixed points of mesurable families of operators,” in Recent Developments in Optimization and Nonlinear Analysis, Contemporary Mathematics, vol. 204, Y. Censor and S. Reich (Eds.), American Mathematical Society: Providence, Rhode Island, 1997, pp. 33-61.

    Google Scholar 

  15. D. Butnariu and A. Mehrez, “Convergence criteria for generalized gradient methods of solving locally Lipschitz feasibility problems,” Comput. Optim. Appl., vol. 1, pp. 307-326, 1992.

    Google Scholar 

  16. Y. Censor and A. Lent, “An iterative row action method for interval convex programming,” J. Optim. Theory Appl., vol. 34, no. 3, pp. 321-353, 1981.

    Google Scholar 

  17. Y. Censor and S. Zenios, Parallel Optimization: Theory, Algorithms and Applications, Oxford University Press, 1997.

  18. G. Cimmino, Calcolo approsimato per le soluzioni di sistemi di ecuazioni lineari, La Riserca Scientifica, Roma, XVI, Anno IX, vol. 2, pp. 326-333, 1938.

    Google Scholar 

  19. F.H. Clarke, Optimization and Nonsmooth Analysis, John Wiley and Sons: New York, 1983.

    Google Scholar 

  20. P.L. Combettes, “The convex feasibility problem in image recovery,” in Advances in Imaging and Electron Phiyisc, vol. 95, P. Hawkes (Ed.), Academic Press: New York, 1995, pp. 155-270.

    Google Scholar 

  21. A.R. De Pierro and A.N. Iusem, “A parallel projection method for finding a common point of a family of convex sets,” Pesquisa Operacional, vol. 5, pp. 243-253, 1985.

    Google Scholar 

  22. A.R. De Pierro and A.N. Iusem, “A relaxed version of Bregman's method for convex programming,” J. Optim. Theory Appl., vol. 51, pp. 421-440, 1986.

    Google Scholar 

  23. V.I. Isratescu, Strict Convexity and Complex Strict Convexity, Lecture Notes in Pure and Applied Mathematics, vol. 89, Marcel Dekker: New York, 1984.

    Google Scholar 

  24. A.N. Iusem and A.R. De Pierro, “Convergence results for an accelerated Cimmino algorithm,” Numer. Math., vol. 49, pp. 347-368, 1986.

    Google Scholar 

  25. W.J. Kammerer and M.Z. Nashed, “Iterative methods for best approximate solutions of linear integral equations of the first and second kind,” J. Math. Anal. Appl., vol. 40, pp. 547-573, 1972.

    Google Scholar 

  26. L.V.K. Kantorovich and G.P. Akilov, Functional Analysis, Pergamon Press: Oxford, 1982.

    Google Scholar 

  27. J. Mikusinski, The Bochner Integral, Academic Press: New York, 1978.

    Google Scholar 

  28. J. von Neumann, Functional Operators-Vol. II, The Geometry of Orthogonal Spaces, in Annals of Mathematics Studies, No. 22, Princeton University Press, 1950. (Reprint of mimeographed lecture notes distributed in 1933.)

  29. R.R. Phelps, Convex Functions, Monotone Operators and Differentiability, 2nd Edition, Springer Verlag: Berlin, 1993.

    Google Scholar 

  30. S. Reich, “A weak convergence theorem for the alternanting method with Bregman distances,” in Theory and Applications of Nonlinear Operators of Accretive and Monotone Types, A.G. Kartsatos (Ed.), Marcel Dekker: New York, 1996, pp. 313-318.

    Google Scholar 

  31. R.T. Rockafellar and R.J.-B. Wets, “Scenarios of policy aggregation in optimization under uncertainty,” Math. Oper. Res., vol. 16, pp. 119-147, 1991.

    Google Scholar 

  32. A.A. Vladimirov, Y.E. Nesterov, and Y.N. Chekanov, “Uniformly convex functionals,” Vestnik Moskovskaya Universiteta, Series Mathematika i Kybernetika, vol. 3, pp. 12-23, 1978, in Russian.

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Butnariu, D., Iusem, A.N. & Burachik, R.S. Iterative Methods of Solving Stochastic Convex Feasibility Problems and Applications. Computational Optimization and Applications 15, 269–307 (2000). https://doi.org/10.1023/A:1008795702124

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1023/A:1008795702124

Navigation