直觉模糊集的Choquet积分相关测度及其决策应用

Qu给出的直觉模糊集的Choquet积分相关系数的计算公式与相关系数的性质相矛盾.为此,通过一个实例说明Qu定义的直觉模糊Choquet积分相关系数定义存在的问题,并结合相关系数的性质证明,分析问题出现的原因;然后,针对存在的问题,以直觉模糊集的Choquet积分相关指标为基础,给出新的直觉模糊集的Choquet积分信息能量的概念,定义新的直觉模糊集的Choquet积分相关系数,并讨论相关系数的性质;最后,利用新定义的直觉模糊集的Choquet积分相关测度,推导出方案与正理想方案之间的Choquet积分相关系数计算公式,据此提出一种直觉模糊多属性决策方法,并通过实例分析以及方法对比,说明所提出方法的可行性和有效性.     

基于线性判别分析的Choquet积分的符号模糊测度提取

在解决分类问题时,建立在Choquet积分上的分类器以其非线性和不可加性的特点,扮演着越来越重要的角色。由于Choquet积分中的符号模糊测度可以描述各特征对结果的影响,因此Choquet积分在解决数据分类及融合 问题方面具有显著的优势。但是,关于Choquet积分符号模糊测度值的求解,学术界一直缺乏有效的方法。目前最常用的方法是遗传算法,但是遗传算法在解决符号模糊测度值的优化问题时存在算法较为复杂、耗时较长等缺陷。由于符号模糊测度值在Choquet积分分类器中是决定性的重要参数,因此设计出一种有效的符号模糊测度提取方法十分必要。文中提出基于线性判别分析的Choquet积分符号模糊测度的提取方法,推导出在分类问题下Choquet积分的符号模糊测度值的解析式表达,其能够有效、快速地得出关键性参数。分别在人工数据集及基准实际数据集上进行测试与验证,实验结果表明所提方法能有效解决Choquet积分分类器中符号模糊测度的优化问题。     

基于Choquet积分的多属性灰靶群决策方法

针对属性间具有关联性且属性值为区间灰数的多属性群决策问题,提出一种基于Choquet 积分的多属性灰靶群决策方法.根据模糊测度和Choquet积分的性质,定义关于区间灰数的Choquet积分信息集成算子,并证明其相关性质;通过灰靶决策方法,对方案集的综合靶心距进行排序.仿真实例验证了所提出方法的合理性.     

基于小波系数模糊积分的图像融合算法研究

提出一种新的基于Choquet模糊积分的图像融合方法。首先利用小波系数的区域特征获取模糊积分的信度函数,其次根据局部窗口内的模糊边缘评价函数自适应地构造模糊密度,最后由Choquet模糊积分确定融合后的小波系数,从而得到融合图像。将此方法应用于微光与红外图像融合处理中,实验结果表明,Choquet模糊积分法可以使得最终的融合图像在空间细节信息的增强和光谱信息的保持两方面的综合性能得到提高。     

基于马田系统的区间Choquet 模糊积分多属性决策方法

为了扩展马田系统在模糊积分多属性决策领域中的应用, 引入区间样本描述统计量, 将传统的实数型马田系统改进为区间型马田系统, 并在此基础上提出一种基于区间数据的模糊测度计算方法. 为了便于集成区间属性值,定义区间Choquet 模糊积分算子. 实例分析表明, 所提方法能够解决属性值为区间数据的模糊积分多属性决策问题, 验证了该方法的可行性.

     

基于Choquet 积分的模糊数直觉模糊数多属性决策方法

根据模糊数直觉模糊数的运算法则,提出了基于模糊测度和Choquet积分的模糊数直觉模糊数的信息集成算子,并证明了该算子的相关性质.运用该算子研究了属性间具有关联性的、属性值为模糊数直觉模糊数的多属性决策方法,最后通过实例分析表明了所提出方法的有效性.     

准则关联的直觉模糊多准则决策方法

针对准则值为直觉三角模糊数,准则间相互关联的多准则决策问题,提出基于Choquet分的决策方法．该方法首先利用偏好函数定义方案在各准则下的优序关系,若模糊测度已知,则直接利用Choquet积分进行求解;若准则集上的模糊测度未知,则利用部分决策信息和最小方差法建立二次规划模型,求解模糊测度,再利用Choquet分进行决策．最后通过实例表明了该方法的有效性和可行性．     

多决策树的模糊积分融合在银行信贷管理系统中的应用

为了提高基于数据挖掘的商业银行信贷管理系统的信贷风险评估水平,将多决策树的Choquet模糊积分融合(MTCFF)模型应用到银行信贷管理系统中。基本思想是采用决策树在已知类型的客户数据上进行挖掘,按照决策树剪枝程度不同形成不同的决策树并产生规则,利用所生成的不同决策树的规则,对未知类型的客户数据进行分类,然后让Choquet模糊积分对多棵决策树的分类结果进行融合,形成最优判断。采用UCI数据库中German客户信用卡数据集进行验证,实验证明Choquet模糊积分的非线性融合效果优于单棵决策树的分类效果,也优于其他线性融合方法,并且Choquet模糊积分要优于Sugeno模糊积分。     

多决策树的模糊积分融合在银行信贷管理系统中的应用

为了提高基于数据挖掘的商业银行信贷管理系统的信贷风险评估水平,将多决策树的Choquet模糊积分融合(MTCFF)模型应用到银行信贷管理系统中。基本思想是采用决策树在已知类型的客户数据上进行挖掘,按照决策树剪枝程度不同形成不同的决策树并产生规则,利用所生成的不同决策树的规则,对未知类型的客户数据进行分类,然后让Choquet模糊积分对多棵决策树的分类结果进行融合,形成最优判断。采用UCI数据库中German客户信用卡数据集进行验证,实验证明Choquet模糊积分的非线性融合效果优于单棵决策树的分类效果,也优于其他线性融合方法,并且Choquet模糊积分要优于Sugeno模糊积分。     

基于累积前景理论和Choquet积分的直觉梯形模糊多属性决策

针对属性值为直觉梯形模糊数且属性存在关联性的风险决策问题, 提出一种基于累积前景理论和Choquet积分的直觉梯形模糊多属性决策方法。根据直觉梯形模糊数距离公式定义了直觉梯形模糊信息的前景价值函数, 通过价值函数和决策权重函数计算方案单属性前景值, 并运用Choquet积分融合属性间存在关联性的前景价值信息获得方案综合前景值, 根据综合前景值的大小实现方案的排序和优选。风险投资实例分析说明了该方法的可行性。     

Fuzzy failure modes and effects analysis by using fuzzy TOPSIS-based fuzzy AHP

Failure mode and effects analysis (FMEA) is a widely used engineering technique for designing, identifying and eliminating known and/or potential failures, problems, errors and so on from system, design, process, and/or service before they reach the customer (Stamatis, 1995). In a typical FMEA, for each failure modes, three risk factors; severity (S), occurrence (O), and detectability (D) are evaluated and a risk priority number (RPN) is obtained by multiplying these factors. There are significant efforts which have been made in FMEA literature to overcome the shortcomings of the crisp RPN calculation. In this study a fuzzy approach, allowing experts to use linguistic variables for determining S, O, and D, is considered for FMEA by applying fuzzy ‘technique for order preference by similarity to ideal solution’ (TOPSIS) integrated with fuzzy ‘analytical hierarchy process’ (AHP). The hypothetical case study demonstrated the applicability of the model in FMEA under fuzzy environment.     

An alternative characterization of fuzzy complement functional

In this short note we propose a novel fuzzy complement functional. This functional is different from other functionals known in the literature. However, it turns out to be an alternative characterization of the well-known negation function. We sincerely thank the anonymous reviewer whose insightful suggestions have significantly improved the paper.     

基于模糊算法的数据库查询工具的设计

利用SQL进行数据库查询,可以完成复杂条件的数据查询,但是,它只能表示和处理精确数据,无法表达自然语言中的模糊。针对具体人员信息数据库,提出了基于人员年龄、身高与体重的模糊单词、模糊隶属函数、模糊算子的表达式,并提出了模糊SQL语句的自动生成方法。提出并实现的基于模糊算法的人员信息数据库查询工龄,已经应用于暂住人口IC卡管理信息系统,并对其它相关模糊数据库查询具有有较好的参考意义。     

Node connectivity and arc connectivity of a fuzzy graph

The fuzzy graph approach is more powerful in cluster analysis than the usual graph - theoretic approach due to its ability to handle the strengths of arcs effectively. The concept of node-strength sequence is introduced and is studied in a complete fuzzy graph. Two new connectivity parameters in fuzzy graphs namely, fuzzy node connectivity (κ) and fuzzy arc connectivity (κ^′) are introduced and obtained the fuzzy analogue of Whitney’s theorem. Fuzzy node cut, fuzzy arc cut and fuzzy bond are defined. Fuzzy bond is a special type of a fuzzy bridge. It is proved that at least one of the end nodes of a fuzzy bond is a fuzzy cutnode. It is shown that κ=κ^′ for a fuzzy tree and it is the minimum of the strengths of its strong arcs. The relationships of the new parameters with already existing vertex and edge connectivity parameters are studied and is shown that the value of all these parameters are equal in a compete fuzzy graph. Also a new clustering technique based on fuzzy arc connectivity is introduced.     

An introduction to vague complemented ordered sets

The purpose of this paper is to introduce a theory of fuzzily defined complement operations on nonempty sets equipped with fuzzily defined ordering relations. Many-valued equivalence relation-based fuzzy ordering relations (also called vague ordering relations) provide a powerful and a comprehensive mathematical modelling of fuzzily defined partial ordering relations. For this reason, starting with a nonempty set X equipped with a many-valued equivalence relation and a vague ordering relation, a fuzzily defined complement operation (called a vague complement operation) on X will be formulated by means of the underling many-valued equivalence relation and vague ordering relation. Because of the fact that the practical implementations of vague complement operations basically depend on their representation properties, a considerable part of this paper is devoted to the representations of vague complement operations. In addition to this, the present paper provides various nontrivial examples for vague complements, and introduces a many-valued logical interpretation of quantum logic as a real application of vague complements.     

模糊控制的实践与认识——介绍简易推理法

本文在Ｍａｍｄａｎｉ法的基础上，介绍简易推理法的使用。     

A generalized model of fuzzy rough sets

The consideration of approximation problem of fuzzy sets in fuzzy information systems results in theory of fuzzy rough sets. This paper focuses on models of generalized fuzzy rough sets, a generalized model of fuzzy rough sets based on general fuzzy relations are studied, properties and algebraic characterization of the model are revealed, and relationships between this model and related models are also discussed.     

Fuzzy systems

In this paper we consider systems whose performance depends on probability distributions and some of the parameters in these probability distributions are to be estimated from data. We argue that all such systems become fuzzy systems whose performance will depend on fuzzy probability distributions and whose measures of performance can be described by fuzzy numbers. Many crisp systems will become fuzzy systems under this procedure.     

液位模糊控制系统设计的应用

采用S7—300可编程序控制器设计了一个模糊控制器，将控制器的模糊输出反模糊化后作为实际输出控制调节阀的开度，使中位水箱的液位达到给定值，直接利用控制经验知识使得控制品质达到良好要求。