An Exterior Newton Method for Strictly Convex Quadratic Programming

  • Authors:
  • Thomas F. Coleman;Jianguo Liu

  • Affiliations:
  • Department of Computer Science and Center for Applied Mathematics, Cornell University, Ithaca, NY 14853, USA;Department of Mathematics, University of North Texas, Denton, TX 76203, USA

  • Venue:
  • Computational Optimization and Applications
  • Year:
  • 2000

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Abstract

We propose an exterior Newton method for strictlyconvex quadratic programming (QP)problems. This method is based on a dual formulation:a sequence of points is generated which monotonicallydecreases the dual objective function.We show that the generated sequenceconverges globally and quadratically to the solution (if the QPis feasible and certain nondegeneracy assumptions are satisfied). Measures for detecting infeasibility are provided. The major computation in each iteration is to solve a KKT-likesystem. Therefore, given an effective symmetricsparse linear solver, the proposed method is suitable for large sparseproblems. Preliminary numerical results are reported.