An LQP-Based Decomposition Method for Solving a Class of Variational Inequalities

  • Authors:
  • Xiaoming Yuan;Min Li

  • Affiliations:
  • xmyuan@hkbu.edu.hk;limin@seu.edu.cn

  • Venue:
  • SIAM Journal on Optimization
  • Year:
  • 2011

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Abstract

The alternating direction method (ADM) is an influential decomposition method for solving a class of variational inequalities with block-separable structures. In the literature, the subproblems of the ADM are usually regularized by quadratic proximal terms to ensure a more stable and attractive numerical performance. In this paper, we propose to apply the logarithmic-quadratic proximal (LQP) terms to regularize the ADM subproblems, and thus develop an LQP-based decomposition method for solving a class of variational inequalities. Global convergence of the new method is proved under standard assumptions.