Hassan Mishmast Nehi

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The quadratic assignment problem (QAP) belongs to the class of NP-Hard problems and also is one of the hardest problems in this class. Today, regarding current hardware, solving the large size instances of this problem, using exact methods, is not possible in reasonable amount of time. In this way many heuristic (Meta-heuristic) and approximation methods(More)
In this paper, we review previous methods for solving interval linear programming (ILP) problems. In most of these methods such as BWC, ILP, TSM, and SOM-2 methods, part of solution space is absolutely infeasible and non-optimal. To eliminate infeasible part of solution space, several methods such as MILP, and ITSM are proposed. The solution space of these(More)
TOPSIS method is a most useful tool for solving MADM problems, also, Choquet integral method is another powerful method which, is able to manage interaction criteria. In this paper, we combine both methods to use from their benefits. First, we will introduce a new method for computing the distance between IT2FSs. Then, we proposed a hybrid method based on(More)
In many real life problems, system parameters or model coefficients may be considered as interval type-2 fuzzy numbers (IT2FNs). In recent decades, intensive research efforts have focused on solving interval type-2 fuzzy linear programming (IT2FLP) problems. In this paper, first, the concept of general interval type-2 triangular fuzzy numbers (GIT2TFNs)(More)