Facility location with hierarchical facility costs

  • Authors:
  • Zoya Svitkina;Éva Tardos

  • Affiliations:
  • Cornell University, Upson Hall, Ithaca, NY;Cornell University, Upson Hall, Ithaca, NY

  • Venue:
  • SODA '06 Proceedings of the seventeenth annual ACM-SIAM symposium on Discrete algorithm
  • Year:
  • 2006

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Abstract

We consider the facility location problem with hierarchical facility costs, and give a (4.236 + ε)-approximation algorithm using local search. The hierarchical facility location problem models multilevel service installation costs. Shmoys, Swamy and Levi [13] gave an approximation algorithm for a two-level version of the problem. Here we consider a multilevel problem, and give a constant factor approximation algorithm, independent of the number of levels, for the case of identical costs on all facilities.