一种改进的证据理论合成规则

A New Method of Combining Evidence

随着证据理论在信息融合领域中的广泛应用,对冲突证据的处理成为证据理论和应用研究热点。提出了一种基于证据重要度和聚焦度的新的合成规则,首先根据各个证据的重要度对冲突证据进行修正,再对冲突进行细化并考虑证据焦元的基数对D-S合成法则的影响,将冲突信息提取后加入组合规则中。通过实验比较和分析,结果说明该方法不仅能够处理一般性冲突问题,也能处理"一票否决"和"鲁棒性"问题。

The problem of conflicting evidence which normally existed in the application of the theory of evidence is studied fully. A new method of combining evidence is presented based on reliability and focus. First,conflict evidence is modified according to the importance of the evidence, then refines the conflict considering the effect of evidence of focal elements base on the synthesis of D-S rules. The results of dealing some conflict evidence examples with this new method show it’s reasonable. It solves three kinds of problems appeared in conflict evidences combination process：common conflicting problem,deny for one vote and robust problem.