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复杂模糊分类系统的协同进化设计方法-控制理论与应用
24 1 Vol. 24 No. 1
2007 02 Control Theory Applications Feb. 2007 2007
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Design of complex fuzzy classification system based on cooperative
coevolutionary algorithm
ZHANG Yong, WU Xiao-bei, XIANG Zheng-rong, HU Wei-li
(College of Automation, Nanjing University of Science and Technology, Nanjing Jiangsu 210094, China)
Abstract: A novel approach to construct complex fuzzy classification system based on cooperative coevolutionary(Co-
evolution) algorithm is proposed in this paper. The approach is composed of three phases: 1) feature selection is accom-
plished by the Simba algorithm; 2) the initial fuzzy system is identified using the fuzzy clustering algorithm; 3) the structure
and parameters of the fuzzy system are optimized by the Co-evolution algorithm. The Co-evolution algorithm owns three
species including the number of fuzzy rules species, the premise structure species and the parameters species. Considering
both precision and interpretability, the fitness function is calculated on the cooperation of individuals from the three species.
The proposed approach had been applied to several benchmark problems, the results showed its validity.
Key words: fuzzy classification systems; feature selection; fuzzy clustering; co-evolution algorithm; interpretability
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