On the Global Convergence of the BFGS Method for Nonconvex Unconstrained Optimization Problems

  • Authors:
  • Dong-Hui Li;Masao Fukushima

  • Affiliations:
  • -;-

  • Venue:
  • SIAM Journal on Optimization
  • Year:
  • 2000

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Abstract

This paper is concerned with the open problem of whether the BFGS method with inexact line search converges globally when applied to nonconvex unconstrained optimization problems. We propose a cautious BFGS update and prove that the method with either a Wolfe-type or an Armijo-type line search converges globally if the function to be minimized has Lipschitz continuous gradients.