This article formulates an optimal location problem for multiple service facilities which provide with some part of all the services. Two facilities which provide with high degree overlapping services have mutually expulsive relation each other. However, the relation shifts to mutually complement as the services provided by the facilities diversify and the degree of overlapping facility function decreases. It is found that the balanced condition of the two brings about non-uniform optimal configuration of facilities generally. It is notable that the high degree overlapping facilities should be located so that the configuration has a vibrated systematic pattern.
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