A NEW-TYPE OF FUZZY NEURAL-NETWORK-BASED ON A TRUTH SPACE APPROACH FOR AUTOMATIC ACQUISITION OF FUZZY RULES WITH LINGUISTIC HEDGES

被引:0
|
作者
HORIKAWA, S
FURUHASHI, T
UCHIKAWA, Y
机构
关键词
FUZZY NEURAL NETWORK; TRUTH SPACE APPROACH; AUTOMATIC ACQUISITION; LINGUISTIC HEDGES; BACKPROPAGATION ALGORITHM; FUZZY MODELING; FUZZY CONTROL;
D O I
暂无
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
Fuzzy reasoning methods are generally classified into two approaches: the direct approach and the truth space approach. Several researches on the relationships between these approaches have been reported. There has been, however; no research which discusses their utility. The authors have previously proposed four types of fuzzy neural networks (FNNs) called Type I, II, III, and IV. The FNNs can identify the fuzzy rules and tune the membership functions of fuzzy reasoning automatically, utilizing the learning capability of neural networks. Types III and IV; which ara based on the truth space approach, can acquire linguistic fuzzy rules with the fuzzy variables in the consequences labeled according to their linguistic truth values (LTVs). However, the expressions available for the linguistic labeling are limited since the LTVs are singletons. This paper presents a new type of FNN based on the truth space approach for automatic acquisition of the fuzzy rules with linguistic hedges. The new FNN, called Type V has the LTVs defined by fuzzy sets for fuzzy rules and can express the identified fuzzy rules linguistically using the fuzzy variables in the consequences with linguistic hedges. Two simulations are done for demonstrating the feasibility of the new method. The results show that the truth space approach makes the fuzzy rules easy to understand.
引用
收藏
页码:249 / 268
页数:20
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