一种新的证据组合规则

A New Combination Rule of Evidence

通过对证据组合问题进行深入的理论分析,提出一种新的基于局部冲突、局部分配和一致性部分进行合取规则的证据组合方法,同时利用证据的可信度来修正证据结构.在确定证据的可信度时,给出一种通用的计算模型.与很多改进的组合方法相比,该方法不仅适用于冲突情况,而且也适用于证据间比较一致的情况.数值仿真表明,所提出方法能加快收敛速度,同时降低决策风险.

Based on thorough theoretic analysis on the problem of evidential combination, a new combination rule was proposed by distributing local conflict to local focal elements and conjunctively operating on the coincident basic belief assignments. The reliability of evidence, computed by a new generic model, is used to correct the belief functions. Compared with the existing combination rules, the newly proposed rule is applied to both cases of conflicting and coincidence. And the numerical simulation shows that the rule can accelerate convergence and reduce the decision risk.