Abstract:It is a great challenge to model Takagi-Sugeno(T-S) fuzzy systems on high dimensional data due to the problem of “the curse of dimensionality”. To this end, a novel T-S fuzzy system modeling method called WOMP-GS-FIS is proposed. The proposed method considers feature selection and group sparse coding simultaneously. Specifically, feature selection is performed by a novel Weighted Orthogonal Matching Pursuit (WOMP) method, based on which the fuzzy rule antecedent part is extracted and the dictionary of the fuzzy system is generated. Then, a group sparse optimization problem based on the group sparse regularization is formulated to obtain the optimal consequent parameters. In this way, the major fuzzy rules are selected by utilizing the group information that existing in the T-S fuzzy systems. The experimental results show that the proposed method can not only simplify the rule,s structure, but also reduce the number of fuzzy rules under the premise of good generalization performance, so as to solve the poor interpretation problem of fuzzy rules on high dimensional data effectively.
林得富,王骏,蒋亦樟,王士同. 面向高维数据的Takagi-Sugeno模糊系统建模新方法[J]. 电子与信息学报, 2018, 40(6): 1404-1411.
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