通信学报 ›› 2015, Vol. 36 ›› Issue (5): 98-103.doi: 10.11959/j.issn.1000-436x.2015104

• 学术论文 • 上一篇    下一篇

基于信任度和虚假度的证据组合方法

宋亚飞,王晓丹,雷蕾,薛爱军   

  1. 空军工程大学 防空反导学院,陕西 西安 710051
  • 出版日期:2015-05-20 发布日期:2015-07-17
  • 基金资助:
    国家自然科学基金资助项目;国家自然科学基金资助项目

Evidence combination based on the degree of credibility and falsity

ONGYa-fei S,ANGXiao-dan W,EILei L,UEAi-jun X   

  1. Air and Missile Defense College,Air Force Engineering University,Xi'an 710051,China
  • Online:2015-05-20 Published:2015-07-17
  • Supported by:
    The National Natural Science Foundation of China;The National Natural Science Foundation of China

摘要:

D-S证据理论在信息融合领域有着广泛的应用,但使用Dempster组合规则对高冲突证据进行合成时可能会得到反直观的结果,在应用中也存在“一票否决”的问题,为解决这些问题,提出一种改进的基于证据信任度和虚假度的证据加权组合方法。首先在证据相关系数的基础上定义了证据信任度,再结合证据虚假度的概念来确定各原始证据的权重,依此权重系数对各证据进行加权平均后利用Dempster组合规则对加权平均证据进行组合。数值算例表明,该组合方法可实现冲突证据的有效融合,与其他方法相比该方法具有更好的收敛性。

关键词: D-S证据理论, 证据组合, 证据冲突, 相关系数, 信任度, 虚假度

Abstract:

D-S evidence theory has been widely used in various fields of information fusion due to its efficiency in deal-ing with uncertain information.Unfortunately,combination of conflicting evidences by classical Dempster's rule may produce counter-intuitive results.To alleviate this problem,a new weighted average combination rule is proposed.Defi-nitions of correlation coefficient was first presented,followed by the introduction of falsity.Then the credibility of evi-dence is proposed.A new weighted coefficient is determined by credibility and falsity.To achieve convergence,the nor-malized weighted coefficient was suggested into the Dempster's combination rule to average the basic probability as-signment.Comparable numerical examples demonstrate that the proposed approach can combine conflicting evidences more effectively.Moreover,the proposed methodology can provide a faster identification of the observed object.

Key words: D-S evidence theory, evidence combination, evidence conflict, correlation coefficient, credibility, falsity

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