History of Fuzzy Logic

Fuzzy logic was first proposed by Lotfi Zadeh in a 1965 paper for the journal Information and Control. In his paper, titled "Fuzzy Sets," Zadeh attempted to reflect the kind of data used in information processing and derived the elemental logical rules for this kind of set.

"More often than not, the classes of objects encountered in the real physical world do not have precisely defined criteria of membership," Zadeh explained. "Yet, the fact remains that such imprecisely defined 'classes' play an important role in human thinking, particularly in the domains of pattern recognition, communication of information, and abstraction."

Since then, fuzzy logic has been successfully applied in machine control systems, image processing, artificial intelligence, and other fields that rely on signals with ambiguous interpretation.