Further development of multiple centrality correctors for interior point methods

  • Authors:
  • Marco Colombo;Jacek Gondzio

  • Affiliations:
  • School of Mathematics, The University of Edinburgh, Edinburgh, UK EH9 3JZ;School of Mathematics, The University of Edinburgh, Edinburgh, UK EH9 3JZ

  • Venue:
  • Computational Optimization and Applications
  • Year:
  • 2008

Quantified Score

Hi-index 0.00

Visualization

Abstract

This paper addresses the role of centrality in the implementation of interior point methods. We provide theoretical arguments to justify the use of a symmetric neighbourhood, and translate them into computational practice leading to a new insight into the role of re-centering in the implementation of interior point methods. Second-order correctors, such as Mehrotra's predictor---corrector, can occasionally fail: we derive a remedy to such difficulties from a new interpretation of multiple centrality correctors. Through extensive numerical experience we show that the proposed centrality correcting scheme leads to noteworthy savings over second-order predictor---corrector technique and previous implementations of multiple centrality correctors.