Efficient Approximation Algorithms for Multi-label Map Labeling

  • Authors:
  • Binhai Zhu;Chung Keung Poon

  • Affiliations:
  • -;-

  • Venue:
  • ISAAC '99 Proceedings of the 10th International Symposium on Algorithms and Computation
  • Year:
  • 1999

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Abstract

In this paper we study two practical variations of the map labeling problem: Given a set S of n distinct sites in the plane, one needs to place at each site: (1) a pair of uniform and non-intersecting squares of maximum possible size, (2) a pair of uniform and nonintersecting circles of maximum possible size. Almost nothing has been done before in this aspect, i.e., multi-label map labeling. We obtain constant-factor approximation algorithms for these problems. We also study bicriteria approximation schemes based on polynomial time approximation schemes (PTAS) for these problems.