D-S证据理论在数据融合中失效问题的研究

Research on invalidation of D-S evidential theory in data fusion

D S方法作为一种重要的处理不确定性问题的数据融合方法,已经广泛应用于各种数据融合系统中。解决D S融合公式在处理冲突证据时的失效问题一直是研究的热点。国内外的各种改进方法主要分为对融合公式的改进和对融合模型的改进2个方向。对各种方法进行理论上和数据上的比较分析表明:修改模型的方式效果明显优于修改融合公式。

As one of the most important data fusion methods dealing with uncertainty problems,the D-S method has been used widely in various fusion systems.All the while,how to resolve the invalidation problem of D-S method at the time of coping with highly conflict evidences is a hotspot for researchers.There are two main streams in all those improving methods at home and abroad.One is to improve the D-S fusion formula and the other is to modify the fusion model.Comparisons in theory and through data show that the result of modifying model is much better than that of the fusion formula.