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Symmetric I* Restriction Method of Fuzzy Inference
Mathematics and Computer Science
Volume 4, Issue 6, November 2019, Pages: 130-137
Received: Nov. 12, 2019; Accepted: Dec. 11, 2019; Published: Dec. 24, 2019
Authors
Yiming Tang, School of Computer and Information, Hefei University of Technology, Hefei, China; Anhui Province Key Laboratory of Affective Computing & Advanced Intelligent Machine, Hefei University of Technology, Hefei, China; Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Canada
Guangqing Bao, School of Computer and Information, Hefei University of Technology, Hefei, China; Anhui Province Key Laboratory of Affective Computing & Advanced Intelligent Machine, Hefei University of Technology, Hefei, China
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Abstract
As one of important parts of fuzzy logic, fuzzy inference plays a vital role in the fields of fuzzy control, artificial intelligence, affective computing, image processing and so forth. Two key problems of fuzzy inference are FMP (fuzzy modus ponens) and FMT (fuzzy modus tollens). How to get the ideal solution for FMP and FMT is a difficult problem in the area of fuzzy logic. Aiming at such problem, from the idea of symmetric implicational reasoning, triple I* method and restriction theory, we put forward and investigate the α-symmetric I* restriction method, and then generalize it to the α(x,y)-symmetric I* restriction method. To begin with, the α-symmetric I* restriction principle and the α(x,y)-symmetric I* restriction principle are established. Furthermore, the equivalent condition to let a basic restriction solution exist is given. Then the unified solutions of the α-symmetric I* restriction method and the α(x,y)-symmetric I* restriction method are achieved for R-implications and (S, N)-implications. Besides, some special cases of optimal solutions are shown. Finally, the corresponding conclusions are provided when the two methods degenerate into the α-triple I* restriction method and α(x,y)-triple I* restriction method. These research results would be an important improvement for the fields of fuzzy inference, fuzzy logic and related applications.
Keywords
Fuzzy Inference, Fuzzy Implication, Triple I Method, Symmetric Implicational Method
Yiming Tang, Guangqing Bao, Symmetric I* Restriction Method of Fuzzy Inference, Mathematics and Computer Science. Vol. 4, No. 6, 2019, pp. 130-137. doi: 10.11648/j.mcs.20190406.14
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