Fuzzy logic was developed by Lotfi A. Zadeh in the 1960s in order to provide mathematical rules and functions which permitted natural language queries. Fuzzy logic provides a means of calculating intermediate values between absolute true and absolute false with resulting values ranging between 0.0 and 1.0. With fuzzy logic, it is possible to calculate the degree to which an item is a member. For example, if the outside temperature is .80 of hot, it is " rather hot ".
In UReason products Fuzzy Logic and Fuzzy Linguistic Rules can be added in the graphical editing environment:
Linguistic (Fuzzy) rules can be constructed in a drag-and-drop fashion highlighting allowed rule syntax:
