一种基于不确定度的证据冲突识别方法

从高度冲突证据对D-S证据理论的应用约束出发,针对几种常用冲突度量方法存在的问题,定义了描述证据自身特征的不确定度,将证据冲突涵义从证据间不一致扩展到证据内外,给出基于不确定度的证据冲突多元度量,并为增强冲突的识别效果提出最大差异度的冲突处理方法.验证分析得出:本文给出的度量方法能够有效表征证据间的冲突程度,最大冲突差异度的处理实现了证据冲突识别的显著化,在证据冲突度量与识别中具有很好的普适性和有效性.

A Method of Evidence Conflict Identification Based on the Uncertainty Degree

This article defines the uncertainty degree of describing the features of evidence itself starting from the highly conflict evidence’s constraints on the application D - S evidence theory， and aiming at the existing problem of several common conflict measurement method. The connotation of evidence conflict is extended from inconsistency between the evidences to both inside and outside of evidence. Evidence conflict multi-measurement is given based on uncertainty， and the conflict processing method of maximum difference degree is put forward in order to enhance the effect of the conflict recognition. Validation analysis showed that the measurement method in this paper can effectively represent conflict degree between evidences; the processing of maximum conflict difference degree achieves significance of evidence conflict identification， which has good universality and effectiveness in evidence conflict recognition of complex systems.