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Iterated Local Search: Framework and Applications

In: Handbook of Metaheuristics

Author

Listed:
  • Helena R. Lourenço

    (Universitat Pompeu Fabra)

  • Olivier C. Martin

    (Université Paris-Sud)

  • Thomas Stützle

    (IRIDIA, Université Libre de Bruxelles (ULB))

Abstract

The key idea underlying iterated local search is to focus the search not on the full space of all candidate solutions but on the solutions that are returned by some underlying algorithm, typically a local search heuristic. The resulting search behavior can be characterized as iteratively building a chain of solutions of this embedded algorithm. The result is also a conceptually simple metaheuristic that nevertheless has led to state-of-the-art algorithms for many computationally hard problems. In fact, very good performance is often already obtained by rather straightforward implementations of the metaheuristic. In addition, the modular architecture of iterated local search makes it very suitable for an algorithm engineering approach where, progressively, the algorithms’ performance can be further optimized. Our purpose here is to give an accessible description of the underlying principles of iterated local search and a discussion of the main aspects that need to be taken into account for a successful application of it. In addition, we review the most important applications of this method and discuss its relationship to other metaheuristics.

Suggested Citation

  • Helena R. Lourenço & Olivier C. Martin & Thomas Stützle, 2010. "Iterated Local Search: Framework and Applications," International Series in Operations Research & Management Science, in: Michel Gendreau & Jean-Yves Potvin (ed.), Handbook of Metaheuristics, chapter 0, pages 363-397, Springer.
    • Handle: RePEc:spr:isochp:978-1-4419-1665-5_12
    DOI: 10.1007/978-1-4419-1665-5_12
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