在二值命题逻辑中引入了公式的Г蕴涵真度,证明了全体有限理论的蕴涵真度值在[0,1]中稠密。在Г蕴涵真度的基础上,定义了公式间的Г蕴涵相似度及伪距离。最后讨论了基于Г蕴涵真度的三种近似推理模式,得出了这三种近似推理模式之间是等价的结论。
The Г-implication truth degree of formulas in classical propositional logic has been proposed, and the implication truth degree of all finite theory is dense in [0, 1-]. Based on Г-implication truth degree, Г-implication similarity and pseudo metric between formulas have been introduced. At last, three models of approximate reasoning based on Г-implication truth degree has been investigated, and the equivalence among them is proved.