摘要
针对评价群体成员权重未知且语言评价信息不完全的群组评价问题,提出了一种基于变权的证据推理解决方法.该方法将各评价群体成员的评价意见作为证据,将位置权向量引入到信度初始分配的建立中,定义了冲突度指数的概念作为证据赋权的诱导分量,结合"大多数"模糊量化算子确定权重,并应用Dempster规则进行证据合成.该方法从证据之间提取权重信息,体现了采纳多数人意见的群组评价思想.最后给出了一个应用实例.
An approaeh based on Dempster-Shafer （D-S） theory and variable weight is proposed for the group evaluation problem with incomplete linguistic evaluation information and ignorance of group members＇ weight. Regarding all the group members＇ evaluation information as evidenee, the ranked positional weighting vector is introduced into the process of calculating basic probability assignment. The concept of conflict degree exponent is proposed as the inducing variable of the evidence re-ordering and the fuzzy linguistic quantifier ＂most of＂ is used to make the weights. The Dempster rule is used to synthesize evidence. Digging the weight information among the evidence, the proposed approach embodies the evaluation principle of adopting most people＇s opinion. Finally, an application example is given to illustrate the approach proposed.
出处
《控制与决策》
EI
CSCD
北大核心
2009年第9期1351-1355,共5页
Control and Decision
基金
辽宁省财政科研基金项目(2007B002)
关键词
群组评价
语言评价信息
信息不完全
证据理论
位置权向量
Group evaluation
Linguistic evaluation information
Incomplete information
Dempster-Shafer theory
Ranked positional weighting vector
