Reduce and Assign: A Constraint Logic Programming and Local Search Integration Framework to Solve Combinatorial Search Problems

  • Nuno Gomes
  • Zita Vale
  • Carlos Ramos
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2833)

Abstract

Since the early 90’s that Constraint Logic Programming (CLP) has been used to solve Combinatorial Search Problems. Generally, CLP has a good performance with highly constrained problems, but it lacks a “global perspective” of the search space, making the search for the optimal solution more difficult when the problems becomes larger and less constrained. On the other hand, Local Search Methods explore the search space directly through an “intelligent” construction of solution neighbourhoods, turning these methods suitable for solving less constrained and large search spaces problems. The aim of this paper is to present a hybridisation framework that allows combining Local Search methods with Constraint Logic Programming. The first results demonstrate that while maintaining the CLP strengths it is possible to overcome their weaknesses and improve its search efficiency.

Keywords

Search Space Tabu Search Memetic Algorithm Maintenance Schedule Constraint Logic Program 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  • Nuno Gomes
    • 1
  • Zita Vale
    • 1
  • Carlos Ramos
    • 1
  1. 1.GECAD Knowledge Engineering and Decision Support Research GroupPolytechnic Institute of Porto / Institute of EngineeringPortugal

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