加权平均法解决证据理论中的失效问题  

Weighted Averaging Approach to Conflict Evidence in D-S Evidence Theory

作　　者：张军[1] 涂国平[1] 

机构地区：[1]南昌大学理学院管理科学与工程系,江西南昌330031

出　　处：《微计算机信息》2007年第33期202-203,225,共3页Control & Automation

基　　金：国家自然科学基金资助课题(70361002)

摘　　要：D-S证据理论是一种重要的处理不确定性问题的方法。但是,证据合成规则在处理冲突证据时产生的失效问题,影响了证据理论的应用。针对证据失效问题,国内外的各种改进方法主要分为对融合公式的改进和对融合模型的改进两个方向。本文在Murphy规则和邓勇方法的基础上提出了一种新的对证据本身进行加权平均,然后融合的方法来解决冲突问题。D-S evidence theory is an important method in dealing with uncertainty problems. But the invalidation problem, which occurs when the combination rule is used to deal with highly conflict evidence, has limited its applications. The various improving methods at home and abroad in view of the invalidation problem fall mainly into two categories： either to modify the fusion formula or to improve the fusion model. In this paper, a new method, which resolves the conflict problem through a fusion of the weighted average of evidence, is put forward based on Murphy＇s rule.

关 键 词：D-S证据理论 合成规则 失效问题 冲突 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]