The Maximum Availability Location Problem (MALP) seeks to locate m servers so that the maximum number of calls for an emergency service has a server available within a predefined critical distance S,with reliability alpha . In this paper MALP is extended for the case where the busy fractions are calculated individually, for each server. This is achieved through the use of the Hypercube Model, embedded into a single vertex substitution heuristic. Computational results are given for networks of up to 150 vertices available in the literature.
probabilistic location; maximum availability location problem; hypercube model
