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A new Semi-Lagrangean Relaxation for the p-median problem

Author

Listed:
  • Butsch, Alex

    (Institute for Operations Research, Karlsruhe Institute of Technology)

  • Jörnsten, Kurt

    (Dept. of Business and Management Science, Norwegian School of Economics)

  • Kalcsics, Jörg

    (Institute for Operations Research, Karlsruhe Institute of Technology)

Abstract

Recently Beltran-Royo et.al presented a Semi-Lagrangean relaxation for the classical p-median location problem. The results obtained using the Semi-Lagrangean relaxation approach were quite impressive. In this paper we use a reformulation of the p-median problem in order to start from a formulation more suitable for Semi-Lagrangean relaxation and analyse the new approach on examples from the OR library.

Suggested Citation

  • Butsch, Alex & Jörnsten, Kurt & Kalcsics, Jörg, 2015. "A new Semi-Lagrangean Relaxation for the p-median problem," Discussion Papers 2015/1, Norwegian School of Economics, Department of Business and Management Science.
    • Handle: RePEc:hhs:nhhfms:2015_001
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    File URL: http://hdl.handle.net/11250/274039
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    More about this item

    Keywords

    p-median Location; Lagrangean Relaxation; Mathematical Programming;
    All these keywords.

    JEL classification:

    • C60 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - General

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