证据推理方法中不完备信息影响因素分析  

Analysis on influential factors to inadequate information using evidential reasoning approach

作　　者：常雷雷[1] 李孟军[1] 项成安[2] 

机构地区：[1]国防科技大学信息系统与管理学院,湖南长沙410073 [2]重庆通信学院基础部,重庆400035

出　　处：《国防科技大学学报》2013年第1期175-179,共5页Journal of National University of Defense Technology

基　　金：国家自然科学基金项目(71201168;71001104)

摘　　要：不确定条件下的不完备信息分析是多属性决策中的主要内容之一,Yang提出的证据推理方法可以较好地处理这类信息。研究了证据推理方法中不完备信息的影响因素,包括规则中的不完备信息,规则的权重以及规则的一致性,并以此为基础分析了评估结果中不完备信息的取值范围,得出了初步结论:评估结果中不完备信息的信度必然小于作为输入的规则中不完备信息中的较大者,但不一定大于其中的较小者。进一步分析了规则一致性的逻辑意义和几何意义,指出规则的一致性实际描述了规则之间的冲突程度。Inadequate information under uncertainty is indispensable to muhiattribute analysis, which can be well handled by the Evidential Reasoning Approach. The factors which bring about influence on the belief of the inadequacy irl the assessment results were studied, including the belief of the inadequacy in the rules as input, the weights and the consistency of the rules. The domain of the inadequacy in the assessment results was determined and a preliminary result was drawn ： the belief of the inadequate information in the assessment result can be less than the bigger one of the belief of inadequate information in the rules as input, but may not be more than the smaller one of the belief of inadequate information in the rules as input. The logical and geometry meaning of eonsistency of the rules was illustrated. The link between the consistency of the rules and the concept of ＂degree of conflict＂ was studied.

关 键 词：证据推理方法 不完备信息 冲突程度 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]