D-S证据理论中的证据组合

Evidence Combination Methods in D-S Evidence Theory

Dem pster证据组合规则在 D- S证据理论中将几组相互独立的证据融合 ,得到一组新的证据。Dempster证据组合规则在 D- S证据理论中起着十分重要的作用。在对 Dempster证据组合规则进行分析的基础上 ,提出了一组更加一般化的证据组合规则 ,即证据的逻辑运算及基于相似性加权的证据组合规则。

Dempster's rule is used to combine probabilistically independent sets of evidence to improve the reliability or dependability of evidence information associated with different data sources. Dempster's rule plays a very important role in D S evidence theory. Through analysis the property of the dempster's rule, we proposd some logic operation on sets of evidence, which is a much more generalized methods for combining probabilistically independent sets of evidence. A weighted dempster's rule of combination handling sets of evidence from various sources with different priority is also given, based on analysis of conjunctive combination defined by the min operation weighted by degree of consistency.