证据合成的一般框架及高度冲突证据合成方法

针对D-S证据理论在合成高度冲突证据时会得到有悖常理的无效结果的问题,提出了有效解决冲突须同时修正证据源和合成规则的原则,并给出了证据合成的一般框架;在此框架下,提出了一种新的证据合成方法。该方法首先对证据源进行两级可靠性度量处理,然后再按照合成规则进行合成,最后采用基于Pignistic概率距离计算的权重把冲突系数分配给各焦元,实现对合成结果的合理修正。实验结果表明:该方法能有效地解决高度冲突证据的合成问题,与其他合成方法相比,该方法合成效果更好。

General framework for evidence combination and its approach to highly conflicting evidence fusion

Counterintuitive and invalid conclusions are produced by the D-S theory of evidence with highly conflicting evidence.This paper gives a principle for effective problem solving when both evidence sources and combination rules have to be improved together,with a general framework for evidence fusion.First,two-level reliability measurements are applied to deal with evidence sources.After that,the improved evidence sources are fused by the combination rules.Finally,the conflicting coefficient is apportioned to ...