模糊群体决策的多方案评价方法

针对多方案评估中因素评价难于精确表示的问题,提出了一种基于模糊语言变量和OWA(OrderedWeightedAveraging)集结算子的群体评价模型与方法,给出各因素的方案两两对比偏好语言评价值,并通过对多决策者、子因素、主因素的三次集结和对模型中α值的恰当选取,可得到方案集的优序排列。该方法可行、有效,可为群体决策提供新的途径。

Evaluation Method of Multiple Alternatives Based on Fuzzy Group Decision Making

It is believed that many attributes are difficult to be described by accurate numbers in evalution of multiple alternatives.With the focus on this problem,this paper proposes a model and method of group evaluation on the basis of fuzzy semantic variables and neat OWA(Ordered Weighted Averaging)operator.This paper also presents a set of preference semantic values between alternatives with respect to each attribute.As a result,optimal ranking order of the alternative set is achieved by selecting the proper a value and aggregating multiple decision makers,sub attributes and main attributes.The method proposed in this paper is feasible and efficient,and presents a new way to the group decision making.