Fuzzy logic and the goals of artificial intelligence

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Fuzzy logic and the goals of artificial intelligence

  1. 1. "FUZZYSets, Fuzzy Logic and the Goals of Artificial Intelligence" Anca RalescuLaboratory for International Fuzzy Engineering, Siber Hegner Building 3F1, 89- 1 Yamashita-cho, Naka-ku Yokohama 231, Japan and Computer Science Department, University of Cincinnati, Cincinnati, Ohio 4522 1, U.S.A. The central issues in the study of intelligent systems We discuss the tradeoff in accuracy versus flexibilityinclude those of knowledge representation, leaning and and we argue that when immediate, practical results are ofreasoning. The treatment of these issues becomes more primary concem the usual desire for accuracy and formalcomplex when uncertainty and imprecision must be taken treatment decreases.into account. In this lecture we investigate some of the goals ofartificial intelligence and the limitations of the purelysymbolic approach. Altemative approaches including neural networks,probabilistic methods, and fuzzy techniques have beensought and experimented with. The lecture will focus onthe relevance of fuzzy logic to the treatment of knowledgerepresentation, learning and inference. We propose that, rather than oppose diverse theories ina fruitless confrontation, their integration can result in amore powerful approach to the study of intelligent systems. The use of fuzzy sets for knowledge representation, andof fuzzy logic for inference under uncertainty (with orwithout a probabilistic method as the problem in hand mayrequire) is illustrated. The advantage of combining fuzzyand neural network techniques is also discussed. We pointout that a collection of new computing methods, globallyknown as soft computing, may indeed lead us closer to thegoals of artificial intelligence. From a converse point of view, starting from the goalsof intelligent systems we submit that the current fuzzymethodology must also be augmented. The underlying idea of OUT discussion is that fuzzy setstheory, fuzzy logic and associated techniques provide anexcellent tool for interfacing the real world ofmeasurments, and the conceptual world embodied bylanguage. 136 $03.000 1993 IEEE 0-81864260-2/93

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