Neighbourhood searches for the bounded diameter minimum spanning tree problem embedded in a VNS, EA, and ACO

  • Authors:
  • Martin Gruber;Jano van Hemert;Günther R. Raidl

  • Affiliations:
  • Vienna University of Technology, Vienna, Austria;University of Edinburgh, Edinburgh, UK;Vienna University of Technology, Vienna, Austria

  • Venue:
  • Proceedings of the 8th annual conference on Genetic and evolutionary computation
  • Year:
  • 2006

Quantified Score

Hi-index 0.00

Visualization

Abstract

We consider the Bounded Diameter Minimum Spanning Tree problem and describe four neighbourhood searches for it. They are used as local improvement strategies within a variable neighbourhood search (VNS), an evolutionary algorithm (EA) utilising a new encoding of solutions, and an ant colony optimisation (ACO). We compare the performance in terms of effectiveness between these three hybrid methods on a suite of popular benchmark instances, which contains instances too large to solve by current exact methods. Our results show that the EA and the ACO outperform the VNS on almost all used benchmark instances. Furthermore, the ACO yields most of the time better solutions than the EA in long-term runs, whereas the EA dominates when the computation time is strongly restricted.