中文摘要：

D-S证据理论可以有效地处理不确定信息,是有效的数据融合方法之一,但在证据高度冲突时,因其归一化过程会产生有悖常理的无效结果.针对此问题,大家提出了许多不同的改进方法,基本上可以分为两类：修改证据及修改组合规则.论文总结了国内外典型文献并进行系统条理的分析,收集各方研究方法并逐步深入压缩提炼形成了一套系统清晰的解决相关问题的思路.并通过实例,比较检验了几种改进方法的有效性.

英文摘要：

D-S evidence method is an effective method of processing imperfect information.h is widely used in data fusion systems.However,it involves counter-intuitive behavious when the high conflict information exists.Generally there are two modification ideas,the modification of evidence sources and the modification of combination rules.This paper reviews the improved methods in typical literatures both here and abroad.On the base of general analysis and summarization,this paper presents an effective idea to solve the related problems.The example proves that the modification methods can imorove the reliability and rationality of the fusion results.