Recently, a new method of optimizing the design of public service facilities considering the locations and service level based on GIS is one of the evident areas of important points in the design of public service facility system. In this study, this research is concerned with the development of decision method of location number of public educational facilities with a minimum student travel distance (with an optimal service level). We have developed a 3-step facility system design based on GIS, multi-attribute decision analysis, and stochastic set-covering method in the view of: 1) optimal decision of school types using analytic hierarchy process as a multi-attribute structured analysis method, 2) finding the optimal number of school and those locations with minimum student travel distance using set-covering problem, and 3) these procedures are shown on GIS-based visual outputs. The computer program is developed and demonstrated to show the computational results. It is known that the proposed method is very effective on a set of test problems of real world.
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