关键词: D-S证据组合规则, Pignistic概率距离, 虚假度, 修正系数

Abstract: To remedy the shortcomings in the recognition of evidence conflict by using conventional conflict coefficient, this method converts the Pignistic probability distance to the credibility of evidence. Then it combines credibility and false degree, which constructs a new correction coefficient to discount the basic belief assignment function. Finally, the basic belief assignment functions adjusted by correction coefficient are fused by D-S combination rule. Numerical example analysis results show that the improved evidence combination method has the possession of rapid convergence and good robustness, keeping the good nature of D-S combination rules.

Key words: D-S evidence theory, Pignistic probability distance, falsity, correction coefficient