A branch-and-cut method for the obnoxious p-median problem

作者:Belotti Pietro*; Labbe Martine; Maffioli Francesco; Ndiaye Malick M
来源:4OR-A Quarterly Journal of Operations Research, 2007, 5(4): 299-314.
DOI:10.1007/s10288-006-0023-3

摘要

The obnoxious p-median (OpM) problem is the repulsive counterpart of the more known attractive p-median problem. Given a set I of cities and a set J of possible locations for obnoxious plants, a p-cardinality subset Q of J is sought, such that the sum of the distances between each city of I and the nearest obnoxious site in Q is maximised. We formulate OpM as a {0,1} linear programming problem and propose three families of valid inequalities whose separation problem is polynomial. We describe a branch-and-cut approach based on these inequalities and apply it to a set of instances found in the location literature. The computational results presented show the effectiveness of these inequalities for OpM.