关键词: 概率逻辑, 主观概率逻辑, 不确定逻辑, 模糊逻辑

Abstract: The thinking method of  probabilistic logic, subjective probabilistic logic, uncertain logic and fuzzy logic are compared by an example. Own opinions is presented as follows：probabilistic logic based on date statistics is better than other logics. Uncertain logic is better than subjective probabilistic logic. When atom propositions with uncertainty are independent, uncertain logic and fuzzy logic is consistent. However, uncertain logic is better than fuzzy logic in dealing with relevant propositions with uncertainty. But, fuzzy logic is better than their logics in logic reasoning.

Key words: probabilistic logic, subjective probabilistic logic, uncertain logic, fuzzy logic