Abstract
In this paper, we propose a regularization projection method for solving a bilevel variational inequality problem in a Hilbert space. We first describe how to incorporate the regularization technique and the modified subgradient extragradient—like method, and then establish the strong convergence of the resulting algorithm under some suitable conditions. The new algorithm requires to compute only one projection on feasible set, and it can be easily implemented without the prior knowledge of Lipschitz and strongly monotone constants of operators. The obtained results in the paper improve and extend some related results in the literature. Several numerical results are reported to illustrate the computational performance of the proposed algorithm.








Similar content being viewed by others
Explore related subjects
Discover the latest articles and news from researchers in related subjects, suggested using machine learning.References
Alber, Ya I., Ryazantseva, I.: Nonlinear Ill-Posed Problems of Monotone Type. Springer, Dordrecht (2006)
Anh, P.K., Buong, N., Hieu, D.V.: Parallel methods for regularizing systems of equations involving accretive operators. Appl. Anal. 93, 2136–2157 (2014)
Antipin, A.S.: On a method for convex programs using a symmetrical modification of the Lagrange function. Ekonomika i Mat. Metody 12, 1164–1173 (1976)
Bakushinskii, A.B.: Methods for the solution of monotone variational inequalities that are based on the principle of iterative regularization. Zh. Vychisl. Mat. Mat. Fiz. 17, 1350–1362 (1977)
Censor, Y., Gibali, A., Reich, S.: The subgradient extragradient method for solving variational inequalities in Hilbert space. J. Optim. Theory Appl. 148, 318–335 (2011)
Censor, Y., Gibali, A., Reich, S.: Strong convergence of subgradient extragradient methods for the variational inequality problem in Hilbert space. Optim. Meth. Softw. 26, 827–845 (2011)
Censor, Y., Gibali, A., Reich, S.: Extensions of Korpelevich’s extragradient method for the variational inequality problem in Euclidean space. Optimization 61, 1119–1132 (2012)
Dempe, S.: Annotated bibliography on bilevel programming and mathematical programs with equilibrium constraints. Optimization 52, 333–359 (2003)
Dempe, S.: Foundations of Bilevel Programming. Kluwer Academic Publishers, Berlin (2002)
Dempe, S., Kalashnikov, V., Pérez-Valdés, G.A., Kalashnykova, N.: Bilevel Programming Problems. Springer, Berlin (2015)
Duc, P.M., Muu, L.D.: A splitting algorithm for a class of bilevel equilibrium problems involving nonexpansive mappings. Optimization 65, 1855–1866 (2016)
Facchinei, F., Pang, J.S.: Finite—Dimensional Variational Inequalities and Complementarity Problems. Springer, Berlin (2003)
Gibali, A., Shehu, Y.: An efficient iterative method for finding common fixed point and variational inequalities in Hilbert spaces. Optimization 68, 13–32 (2019)
Gibali, A., Hieu, D.V.: A new inertial double-projection method for solving variational inequalities. J. Fixed Point Theory Appl. 21, 97 (2019)
Goebel, K., Reich, S.: Uniform Convexity, Hyperbolic Geometry, and Nonexpansive Mappings. Marcel Dekker, New York, Basel (1984)
Hartman, P., Stampacchia, G.: On some non-linear elliptic diferential-functional equations. Acta Math. 115, 271–310 (1966)
Hieu, D.V., Thong, D.V.: New extragradient-like algorithms for strongly pseudomonotone variational inequalities. J. Glob. Optim. 70, 385–399 (2018)
Hieu, D.V., Anh, P.K., Muu, L.D.: Modified hybrid projection methods for finding common solutions to variational inequality problems. Comput. Optim. Appl. 66, 75–96 (2017)
Hieu, D.V., Anh, P.K., Muu, L.D.: Modified extragradient-like algorithms with new stepsizes for variational inequalities. Comput. Optim. Appl. 73, 913–932 (2019)
Hieu, D.V., Cho, Y.J., Xiao, Y.-B.: Golden ratio algorithms with new stepsize rules for variational inequalities. Math. Meth. Appl. Sci. (2019). https://doi.org/10.1002/mma.5703
Hieu, D.V., Muu, L.D., Quy, P.K., Vy, L.V.: Explicit extragradient-like method with regularization for variational inequalities. Results Math. 74, 20 (2019)
Hieu, D.V., Quy, P.K.: An inertial modified algorithm for solving variational inequalities. RAIRO Oper. Res. (2019). https://doi.org/10.1051/ro/2018115
Hieu, D.V., Strodiot, J.J., Muu, L.D.: Strongly convergent algorithms by using new adaptive regularization parameter for equilibrium problems. J. Comput. Appl. Math. (2020). https://doi.org/10.1016/j.cam.2020.112844
Hieu, D.V., Strodiot, J.J., Muu, L.D.: An explicit extragradient algorithm for solving variational inequalities. J. Optim. Theory Appl. (2020). https://doi.org/10.1007/s10957-020-01661-6
Hieu, D.V., Thong, D.V.: A new projection method for a class of variational inequalities. Appl. Anal. 98, 2423–2439 (2019)
Khanh, P.D., Vuong, P.T.: Modified projection method for strongly pseudomonotone variational inequalities. J. Glob. Optim. 58, 341–350 (2014)
Kinderlehrer, D., Stampacchia, G.: An Introduction to Variational Inequalities and Their Applications. Academic Press, New York (1980)
Konnov, I.V.: Equilibrium Models and Variational Inequalities. Elsevier, Amsterdam (2007)
Korpelevich, G.M.: The extragradient method for finding saddle points and other problems. Ekonomikai Matematicheskie Metody 12, 747–756 (1976)
Maingé, P.-E.: A hybrid extragradient-viscosity method for monotone operators and fixed point problems. SIAM J. Control Optim. 47, 1499–1515 (2008)
Malitsky, Y.V.: Projected reflected gradient methods for monotone variational inequalities. SIAM J. Optim. 25, 502–520 (2015)
Malitsky, Y.V., Semenov, V.V.: An extragradient algorithm for monotone variational inequalities. Cybern. Syst. Anal. 50, 271–277 (2014)
Moudafi, A.: Proximal methods for a class of bilevel monotone equilibrium problems. J. Glob. Optim. 47, 287–292 (2010)
Mordukhovich, B.: Variational Analysis and Applications. Springer, Cham (2018)
Popov, L.D.: A modification of the Arrow–Hurwicz method for searching for saddle points. Mat. Zametki 28, 777–784 (1980)
Sun, D.: A projection and contraction method for the nonlinear complementarity problems and its extensions. Math. Numer. Sin. 16, 183–194 (1994)
Tinti, F.: Numerical solution for pseudomonotone variational inequality problems by extragradient methods. Var. Anal. Appl. 79, 1101–1128 (2004)
Thong, D.V., Triet, N.A., Li, X.H., Dong, Q.-L.: Strong convergence of extragradient methods for solving bilevel pseudo-montontone variational inequality problems. Numer. Algorithm (2019). https://doi.org/10.1007/s11075-019-00718-6
Xu, H.K.: Another control condition in an iterative method for nonexpansive mappings. Bull. Aust. Math. Soc. 65, 109–113 (2002)
Yamada, I.: The hybrid steepest descent method for the variational inequality problem over the intersection of fixed point sets of nonexpansive mappings. In: Butnariu, D., Censor, Y., Reich, S. (eds.) Inherently Parallel Algorithms for Feasibility and Optimization and Their Applications, pp. 473–504. Elsevier, Amsterdam (2001)
Acknowledgements
The authors would like to thank the Associate Editor and the anonymous referees for their valuable comments and suggestions which helped us very much in improving the original version of this paper. The first author is supported by Vietnam National Foundation for Science and Technology Development (NAFOSTED) under Grant No. 101.01-2020.06.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of interest
There are no conflicts of interest to this work.
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Van Hieu, D., Moudafi, A. Regularization projection method for solving bilevel variational inequality problem. Optim Lett 15, 205–229 (2021). https://doi.org/10.1007/s11590-020-01580-5
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11590-020-01580-5