VLSN search algorithms for partitioning problems using matching neighbourhoods


ÖNCAN T. , Kabadi S. N. , Nair K. P. K. , Punnen A. P.

JOURNAL OF THE OPERATIONAL RESEARCH SOCIETY, vol.59, no.3, pp.388-398, 2008 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 59 Issue: 3
  • Publication Date: 2008
  • Doi Number: 10.1057/palgrave.jors.2602356
  • Title of Journal : JOURNAL OF THE OPERATIONAL RESEARCH SOCIETY
  • Page Numbers: pp.388-398

Abstract

In this paper, we propose a general paradigm to design very large-scale neighbourhood search algorithms for generic partitioning-type problems. We identify neighbourhoods of exponential size, called matching neighbourhoods, comprised of the union of a class of exponential neighbourhoods. It is shown that these individual components of the matching neighbourhood can be searched in polynomial time, whereas searching the matching neighbourhood is NP-hard. Matching neighbourhood subsumes a well-known class of exponential neighbourhoods called cyclic-exchange neighbourhoods. Our VLSN algorithm is implemented for two special cases of the partitioning problem; the covering assignment problem and the single source transportation problem. Encouraging experimental results are also reported.