摘要： D-S证据理论是一种有效处理不确定信息的方法,在数据融合等领域得到了广泛应用。经典D-S证据理论在融合冲突较大的信息时通常会得到有悖于常理的结论。为此,引入证据矛盾系数的概念,提出一种能有效利用冲突信息的证据权重计算方法,采用D-S证据理论组合规则进行数据融合。算例分析结果表明,相比同类方法,提出方法收敛速度更快,融合结果更准确,能克服经典D-S证据理论的不足,提高融合结果的可信度。
关键词:
D-S证据理论,
冲突证据,
矛盾系数,
数据融合,
证据可信度
Abstract: D-S evidence theory is an effective method dealing with the dubious information and is widely used in the field of data fusion.There generates a wrong conclusion when using classical D-S evidence theory to handle the highly conflict evidence information.This paper introduces the concept of contradiction ratio between conflict evidences,uses the conflict information effectively and presents a new determine method for evidence weight.After that,it uses D-S evidence theory combination rules for data processing.The fusion results show the efficiency of the proposed method and provide a new way for D-S evidence theory algorithm improving.
Key words:
D-S evidence theory,
conflict evidence,
contradiction ratio,
data fusion,
evidence credibility ratio
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