梯形直觉模糊数排序方法及在多属性决策中应用

A Ranking Method of Trapezoidal Intuitionistic Fuzzy Numbers and the Application to Decision Making

基于梯形直觉模糊数的值和模糊度两个特征,一类梯形直觉模糊数的排序方法被研究.首先,给出了梯形直觉模糊数的定义、运算法则和截集.其次,定义了梯形直觉模糊数关于隶属度和非隶属度的值和模糊度,以及值的指标和模糊度的指标.最后,给出了梯形直觉模糊数的排序方法,并将其应用到属性值为梯形直觉模糊数的多属性决策问题中.

The ranking of trapezoidal intuitionistic fuzzy numbers （TIFNs）was solved by the value and ambiguity based ranking method developed in this paper.Firstly,the concept of TIFNs was introduced,and arithmetic operations and cut sets over TIFNs were investigated.Then,the values and ambiguities of the membership degree and the non-membership degree for TIFNs were defined as well as the value-index and ambiguity-index.Finally,a value and ambiguity based ranking method was developed and applied to solve multiattribute decision making problems in which the ratings of alternatives on attributes were expressed using TIFNs.A numerical example was examined to demonstrate the implementation process and applicability of the method proposed.