A Fuzzy Coherent Hierarchical Location-Allocation Model for Congested Systems

A fuzzy queuing coherent hierarchical location-allocation model is developed for congested systems. the parameters of the model are approximately evaluated and stated as fuzzy-numbers. the coverage of demand nodes is also considered in an approximate manner and is stated by the degree of membership. using the queuing theory and fuzzy conditions, a coherent hierarchical model is developed for the maximal covering location problem (mclp). an example problem is solved and presented, along with results. conclusions and future extensions are also included.