Conceptual graphs and fuzzy logic are two logical formalisms that emphasize the target of natural language, each of which is focused on one of the two mentioned desired features of a logic for handling natural language. Conceptual graphs, based on semantic networks and Peirce's existential graphs, combine the visual advantage of graphical languages and the expressive power of logic.

Tru Hoang Cao (2010) Conceptual Graphs and Fuzzy Logic: A Fusion for Representing and Reasoning with Linguistic Information. p. 1 - About