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This paper first deduces expected value formulas for fuzzy variables. After that, we present a new class of fuzzy two-stage location-allocation problems. To solve the two-stage location-allocation problem, this paper designs a hybrid algorithm which integrates the approximation method and particle swarm optimization (PSO) algorithm. Finally, an application example is considered to demonstrate the...
In this paper, we firstly discuss some properties with respect to the credibility constraints. After that, we construct a new class of fuzzy generalized assignment problem with credibility constraints, in which the cost and time are uncertain and assumed to be characterized by fuzzy variables with known possibility distributions. The problem is a very changeable combinational optimization and it is...
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