模糊现象是一种普遍存在的现象,以前人们总是回避它,但是由于现代化科技所面对的系统日益复杂,模糊性总是伴随着复杂性出现。模糊作为一个概念提出为时不长,二十世纪六十年代加利福尼亚大学查德教授发表《模糊集》论文,提出了模糊理论,随之出现“模糊数学”、“模糊语言”等学 Obscure phenomenon is a ubiquitous phenomenon. In the past, people always avoided it. However, due to the increasingly complex systems faced by modern science and technology, ambiguity always accompanies with complexity. As a concept, vagueness has not been proposed for a long time. In the 1960s, Prof. Richard Chad of the University of California published a paper on “Fuzzy Sets” and proposed a fuzzy theory. As a result, “fuzzy mathematics” and “fuzzy language” appeared.