基于不可信证据源与冲突重分配的证据合成方法

针对D-S证据理论在高冲突下失效的问题,在比较修正原始证据源和重新分配冲突两种方法的基础上,提出一种新的合成规则,新方法用可信度修正证据的同时,把全局冲突分为两部分,并依据"全局冲突在全局分配、局部冲突在局部分配"的原则对冲突进行细化分配。通过仿真分析,并与其他方法比较,新的合成方法能更好地融合冲突证据,收敛速度快,具有较强的抗干扰能力。

Combination Rules of Evidence Based on Incredible Evidence Sources and Conflict Redistribute

To solve the invalidation problem of Dempster-Shafer evidence combination rule with high conflict,a new method is proposed by comparing correcting original evidence sources and redistributing conflicts.With correcting original evidence sources by reliability,the new method separated the overall conflict into two parts and distributed conflicts based on the rules which distributes overall conflicts on the whole and part conflicts on the part.The simulation analysis shows that,compared with other methods,the new combination rules have good performances in fusing evidence conflicts and can accelerate convergence and enhance the anti-interference ability.