Acta mathematica scientia,Series A ›› 2025, Vol. 45 ›› Issue (5): 1698-1710.

Previous Articles     Next Articles

An Inertial Three-Term Conjugate Gradient Projection Method Based on BFGS Update

Pengjie Liu(),Hu Shao*(),Jiayi Li(),Duanduan Dong()   

  1. School of Mathematics, Jiangsu Center for Applied Mathematics, China University of Mining and Technology, Jiangsu Xuzhou 221116
  • Received:2024-04-12 Revised:2024-12-20 Online:2025-10-26 Published:2025-10-14
  • Supported by:
    Fundamental Research Funds for the Central Universities(2025QN1147)

Abstract:

Based on the BFGS update, in this paper, we present a class of improved three-term search directions. Then, by combining the inertial strategy and hyperplane projection approach, an inertial three-term conjugate gradient projection method is proposed for solving unconstrained nonlinear monotone equations. The proposed inertial algorithm exhibits the following features: (i) its search direction always possesses sufficient descent and trust region properties, independent of any line search; (ii) the inertial strategy generates iterative points by utilizing information from three iterations; (iii) the method achieves global convergence results without assuming the underlying mapping to satisfy Lipschitz continuity. Preliminary numerical experiments verify the effectiveness of the proposed method.

Key words: nonlinear monotone equations, three-term conjugate gradient method, inertial strategy, BFGS Update, global convergence

CLC Number: 

  • O221.2
Trendmd