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基于三角形模糊化的非线性T-S模糊系统对p-可积函数的逼近性 被引量:3
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作者 张国英 王贵君 《浙江大学学报(理学版)》 CAS CSCD 北大核心 2015年第5期537-541,共5页
通过给定p-可积函数,引入了分片线性函数(PLF)的解析表达式.基于三角形模糊化、乘积推理机和中心平均解模糊化构造了一类新的非线性T-S模糊系统,在p-积分模下证得非线性T-S模糊系统对此分片线性函数具有逼近性,进而得到该系统对p-可积... 通过给定p-可积函数,引入了分片线性函数(PLF)的解析表达式.基于三角形模糊化、乘积推理机和中心平均解模糊化构造了一类新的非线性T-S模糊系统,在p-积分模下证得非线性T-S模糊系统对此分片线性函数具有逼近性,进而得到该系统对p-可积函数亦具逼近性能. 展开更多
关键词 分片线性函数 三角形模糊化 非线性T-S模糊系统 p-可积函数 逼近性
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基于三角形和高斯模糊化的Mamdani模糊系统表示 被引量:7
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作者 高建思 王贵君 《模糊系统与数学》 北大核心 2018年第2期25-31,共7页
模糊化是将模糊系统中输入变量的确定值转换为相应模糊集合的过程,它在模糊系统建模和模糊控制领域有着重要的作用。本文在前件模糊集取为三角形模糊数条件下,利用函数极值方法求解后件模糊集的隶属函数,进而给出基于三角形模糊化和高... 模糊化是将模糊系统中输入变量的确定值转换为相应模糊集合的过程,它在模糊系统建模和模糊控制领域有着重要的作用。本文在前件模糊集取为三角形模糊数条件下,利用函数极值方法求解后件模糊集的隶属函数,进而给出基于三角形模糊化和高斯模糊化的两种Mamdani模糊系统表示。 展开更多
关键词 三角形模糊化 高斯模糊化 乘积推理机 中心平均解模糊化 Mamdani模糊系统
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Novel method for hybrid multiple attribute decision making based on TODIM method 被引量:1
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作者 Fang Wang Hua Li 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2015年第5期1023-1031,共9页
The TODIM(an acronym in Portuguese for interactive and multiple attribute decision making) method is a valuable tool to solve the multiple attribute decision making(MADM) problems considering the behavior of the decis... The TODIM(an acronym in Portuguese for interactive and multiple attribute decision making) method is a valuable tool to solve the multiple attribute decision making(MADM) problems considering the behavior of the decision maker(DM), while it cannot be used to handle the problem with unknown weight information on attributes. In this paper, a novel method based on the classical TODIM method is proposed to solve the hybrid MADM problems with unknown weight information on attributes,in which attribute values are represented in four different formats:crisp numbers, interval numbers, triangular fuzzy numbers and trapezoidal fuzzy numbers. Firstly, the positive-ideal alternative and negative-ideal alternative are determined, and the gain and loss matrices are constructed by calculating the gain and loss of each alternative relatived to the ideal alternatives concerning each attribute based on different distance calculation formulas, which may avoid the information missing or information distortion in the process of unifying multiform attribute values into a certain representation form. Secondly, an optimization model based on the maximizing deviation(MD) method, by which the attribute weights can be determined, is established for the TODIM method. Further, the calculation steps to solve the hybrid MADM problems are given. Finally, two numerical examples are presented to illustrate the usefulness of the proposed method, and the results show that the DM's psychological behavior, attribute weights and the transformed information would highly affect the ranking orders of alternatives. 展开更多
关键词 hybrid multiple attribute decision making TODIM RANKING
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