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JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A 2002, Vol. 28 Issue (2) :198-201    DOI:
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A Method to Simplify Fuzzy Logic System Structure Based on Rule Sensitivity
SUN Duo-qing, HUO Wei*
Beijing University of Aeronautics and Astronautics, School of Science

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Abstract A method to simplify fuzzy logic system (FLS) structure was presented based on rule sensitivity. With introducing the concept of rule sensitivity, a new function was constructed and added into objective function to get a penalty function.In this way, a new performance index was obtained. Then, fuzzy logic system parameters were modified by optimizing the performance index. On the above basis, as many as possible sensitivities can be approximated to zero, while keeping outputs of the fuzzy logic system approximate to the desire ones. Finally, the fuzzy logic system was simplified by eliminating those rules with approximately zero sensitivities. The efficiency of the method was verified by simulation results.
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Keywordsfuzzy systems   sensitivity   performance indexes\@     
Received 2000-07-06;
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SUN Duo-qing, HUO Wei.A Method to Simplify Fuzzy Logic System Structure Based on Rule Sensitivity[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2002,V28(2): 198-201
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http://bhxb.buaa.edu.cn//EN/     or     http://bhxb.buaa.edu.cn//EN/Y2002/V28/I2/198
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