摘要
D-S证据组合规则在处理高冲突度信息时,会得出与直觉相反的结论,出现冲突的证据组合,这一直是D-S理论研究的热点。现有改进的组合规则大部分不满足结合律原则,导致不同的组合顺序会得到不同的组合结果。针对这一问题,给出了一种新的满足结合律原则的证据组合推理规则。首先建立了基于Ign(.)函数极小化的证据折扣优化模型,然后利用最优折扣对证据进行修正,得到证据修正模型,最后利用新的证据合成规则对修正后的证据进行组合。算例验证结果表明,新的组合推理规则在处理冲突方面的性能得到明显改进。
Abstract： The combination rule of conflict evidences has been one of the important issues in Dempster-Sha-fer theory since it may conclude an error result in dealing with high conflict information. In order to deal with the problems that much of modified combination rules do not satisfy the associative law, a new combination rule that satisfies the associative taw is proposed. An optimized model of evidence discount rate based on the minimized Ign（ ＊ ） function is built firstly, then the modified evidences are obtained by pretreated mass functions with discount rate . Finally the modified evidences are combined by the new combination rule. The numerical ex ample shows that the new combination rule has good performance in dealing with conflict and improves the reliability and rationality.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2009年第5期1158-1161,共4页
Systems Engineering and Electronics
基金
国家自然科学基金资助课题(60773209)
