对冲突证据合成的一种改进方法

An Improved Method for Conflict Evidence Synthesis

D-S证据理论作为研究处理不确定性推理的有效工具和方法,其应用领域相当广泛.但当所给证据高度冲突时,利用D-S合成规则可能得到有悖常理的结果.针对这一问题,基于按比例分配的思想提出了一种新的证据合成方法,即将冲突因子按冲突证据在所给已知证据中所占比例分配给识别框架中的焦元.通过实例分析和实验结果表明,新合成方法简洁,合成结果比较符合直观,说明该方法能较好解决冲突证据合成问题.

D-S evidence theory, as the research effective tools and methods of dealing with uncertainty reasoning, its application field is quite extensive. When given highly conflict evidence, the use of D-S synthetic rules can be perverse results. In order to solve this problem, this paper presents a new synthetic method of evidence, and the forthcoming conflict factor is assigned to the focal element in the recognition framework by the proportion of the evidence in the given evidence in the conflict evidence. The example analysis and experimental results show that the new synthetic method is intuitive, and can well solve the problem of conflict evidence synthesis.