Approximation with a fixed number of solutions of some biobjective maximization problems

  • Authors:
  • Cristina Bazgan;Laurent Gourvès;Jérôme Monnot

  • Affiliations:
  • LAMSADE, Université Paris-Dauphine, Paris Cedex 16, France and CNRS, UMR 7243, France and Institut Universitaire de France, France;LAMSADE, Université Paris-Dauphine, Paris Cedex 16, France and CNRS, UMR 7243, France;LAMSADE, Université Paris-Dauphine, Paris Cedex 16, France and CNRS, UMR 7243, France

  • Venue:
  • WAOA'11 Proceedings of the 9th international conference on Approximation and Online Algorithms
  • Year:
  • 2011

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Abstract

We investigate the problem of approximating the Pareto set of biobjective optimization problems with a given number of solutions. This task is relevant for two reasons: (i) Pareto sets are often computationally hard so approximation is a necessary tradeoff to allow polynomial time algorithms; (ii) limiting explicitly the size of the approximation allows the decision maker to control the expected accuracy of approximation and prevents him to be overwhelmed with too many alternatives. Our purpose is to exploit general properties that many well studied problems satisfy. We derive existence and constructive approximation results for the biobjective versions of Max Bisection, Max Partition, Max Set Splitting and Max Matching.