属于不同集合的定性信任度的序比较及应用

Comparison of Qualitative Belief Degrees Belonging to Different Sets and Its Application

在定性不确定推理中 ,定性信任度集并不是惟一的 Akdag等人提出的不同定性信任度集中元素之间的序比较方法存在缺陷 ,与定性运算并不协调 ,这将会导致不确定性的定性表达和操作上的矛盾 提出了新的属于不同集的定性信任度的序比较方法 ,并定义了不同定性信任度集中元素之间的定性混合运算 这种序比较方法不仅更加符合直观 ,而且与定性运算保持一致 。

The set of qualitative belief degrees adopted in qualitative uncertain reasoning is not unique It is found that the approach to comparison of qualitative belief degrees belonging to different sets proposed by Akdag et al has a serious deficiency in consistency with qualitative operation The inconsistency may result in confusion in representation and reasoning about uncertainty Proposed in this paper is a new approach to the comparison of qualitative belief degrees belonging to different sets The qualitative mixed operations of the elements of different sets of qualitative belief degrees are defined The approach is more reasonable in intuitive and consistent with qualitative operation, and in favor of qualitative manipulation of uncertainty under different sets of qualitative belief degrees