Regrouping service sites: a genetic approach using a voronoi diagram

  • Authors:
  • Jeong-Yeon Seo;Sang-Min Park;Seoung Soo Lee;Deok-Soo Kim

  • Affiliations:
  • Department of Industrial Engineering, Hanyang University, Seoul, South Korea;Voronoi Diagram Research Center, Hanyang University, Seoul, South Korea;CAESIT, Konkuk University, Seoul, South Korea;Department of Industrial Engineering, Hanyang University, Seoul, South Korea

  • Venue:
  • ICCSA'05 Proceedings of the 2005 international conference on Computational Science and Its Applications - Volume Part IV
  • Year:
  • 2005

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Abstract

In this paper, we consider the problem of regrouping service sites into a smaller number of service sites called centers. Each service site is represented as a point in the plane and has service demand. We aim to group the sites so that each group has balanced service demand and the sum of distances between sites and their corresponding center is minimized. By using Voronoi diagrams, we obtain topological information among the sites and based on this, we define a mutation operator of a genetic algorithm. The experimental results show improvements in running time as well as cost optimization. We also provide a variety of empirical results by changing the relative importance of the two criteria, which involve service demand and distances, respectively.