Dempster组合规则适用性分析

摘要

针对传统冲突系数识别证据冲突存在漏识、误识和冲突系数值会累加增大等问题,采用pignistic变换后得到的概率赋值函数之间的距离,结合传统冲突量化标准,研究了Dempster组合规则适用性判断方法.通过与Liu判断Dempster组合规则适用性方法的对比结果表明,本方法对Dempster组合规则适用判断有较好的适用性与合理性.%Aiming at the open issues that the classical conflict coefficient in D-S evidence theory cannot correctly recognize the evidence conflict and the conflict increases with the number of information sources,adopting the distance among probability assignment functions transformed by pignistic and integrating classical conflict quantification standard, the applicability of Dempster's combination rule was analyzed. The results of the numerical examples and the comparison with the method made by Weiru Liu demonstrate that the proposed method provides a good applicable and reasonable indicator on the applicability of Dempster's combination rule.