Maximizing the number of obnoxious facilities to locate within a bounded region
This paper deals with the problem of locating a maximal cardinality set of obnoxious facilities within a bounded rectangle in the plane such that their pairwise L? L ? -distance as well as the L? L ? -distance to a set of already placed demand sites is above a given threshold. We employ techniques and methods from computational geometry to design an optimization algorithm and an efficient 1 2 -approximation algorithm for the problem, and employ the optimization algorithm to design a PTAS based on the shifting strategy [Hochbaum DS, Maass W. Approximation schemes for covering and packing problems in image processing and VLSI. Journal of the ACM 1985;32:1306]. As a byproduct we improve the algorithm for placing obnoxious facilities given by Katz et al. [Improved algorithms for placing undesirable facilities. Computers & Operations Research 2002;29:185972.].
abnoxious multifacility location approximate solution