Modified extragradient methods for solving variational inequalities

  • Authors:
  • Abdellah Bnouhachem;M. H. Xu;Xiao-Ling Fu;Sheng Zhaohan

  • Affiliations:
  • School of Management Science and Engineering, Nanjing University, Nanjing, 210093, PR China and Ibn Zohr University, ENSA, BP 32/S, Agadir, Morocco;Department of Information Science, Jiangsu Polytechnic University, Chanzhou, Jiangsu Province, 213016, PR China;Department of Mathematics, Nanjing University, Nanjing, 210093, PR China;School of Management Science and Engineering, Nanjing University, Nanjing, 210093, PR China

  • Venue:
  • Computers & Mathematics with Applications
  • Year:
  • 2009

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Abstract

In this paper, we propose two methods for solving variational inequalities. In the first method, we modified the extragradient method by using a new step size while the second method can be viewed as an extension of the first one by performing an additional projection step at each iteration and another optimal step length is employed to reach substantial progress in each iteration. Under certain conditions, the global convergence of two methods is proved. Preliminary numerical experiments are included to illustrate the efficiency of the proposed methods.