Journal of Heuristics

, Volume 7, Issue 2, pp 131–144

Maximally Disjoint Solutions of the Set Covering Problem

Authors

  • Peter L. Hammer
    • RUTCOR, Rutgers University
  • David J. RaderJr.
    • Department of MathematicsRose-Hulman Institute of Technology
Article

DOI: 10.1023/A:1009687403254

Cite this article as:
Hammer, P.L. & Rader, D.J. Journal of Heuristics (2001) 7: 131. doi:10.1023/A:1009687403254

Abstract

This paper is concerned with finding two solutions of a set covering problem that have a minimum number of variables in common. We show that this problem is NP-complete, even in the case where we are only interested in completely disjoint solutions. We describe three heuristic methods based on the standard greedy algorithm for set covering problems. Two of these algorithms find the solutions sequentially, while the third finds them simultaneously. A local search method for reducing the overlap of the two given solutions is then described. This method involves the solution of a reduced set covering problem. Finally, extensive computational tests are given demonstrating the nature of these algorithms. These tests are carried out both on randomly generated problems and on problems found in the literature.

set coveringdisjoint solutionsGRASP algorithm

Copyright information

© Kluwer Academic Publishers 2001