直觉不确定语言集成算子及在群决策中的应用

直觉不确定语言数是直觉模糊数和不确定语言变量值的拓展. 针对直觉不确定语言信息的集成问题, 定义了直觉不确定语言数运算法则和大小比较方法, 提出了直觉不确定语言的加权算术平均算子(IULWAA)、直觉不确定语言的有序加权平均算子(IULOWA)以及直觉不确定语言的混合加权平均算子(IULHA)及这些算子的性质. 在此基础上, 提出一种属性权重确知且属性值以直觉不确定语言数形式给出的多属性群决策方法. 最后通过实例分析证明了该方法的有效性.     

直觉正态模糊优先集结算子及其在群决策中的应用

直觉正态模糊数是对直觉模糊数和正态模糊数的拓展.针对直觉正态模糊信息的集成问题,定义了直觉正态模糊数的运算法则、期望值和大小比较方法,提出了准则间具有优先关系的直觉正态模糊优先加权平均算子(INFPWA)、直觉正态模糊优先加权几何平均算子(INFPWG)、直觉正态模糊有序加权平均算子(INFPOWA)及这些算子的性质.在此基础上,针对专家和准则间具有优先关系并且准则值为直觉正态模糊数的多准则决策问题,提出一种基于直觉正态模糊优先集结算子的群决策方法.最后通过算例分析验证了该方法的有效性和可行性.     

基于直觉正态模糊集结算子的多准则决策方法

定义了直觉正态模糊数及其运算法则、Euclidean距离、直觉正态模糊加权算术平均算子和直觉正态模糊加权几何平均算子. 针对准则值为直觉正态模糊数而权重信息不完全的多准则决策问题, 提出了一种基于直觉正态模糊集结算子的决策方法. 该方法首先利用各方案之间的距离和最小化思想建立优化模型求得最优权重, 然后利用集结算子对各准则进行集结, 从而得到各方案的综合评价值, 最后通过比较它们跟正负理想方案间的相对贴近度的大小, 得到方案集的排序. 实例表明该方法的有效性和可行性.     

Entropy-based procedures for intuitionistic fuzzy multiple attribute decision making

The class of multiple attribute decision making (MADM) problems is studied, where the attribute values are intuitionistic fuzzy numbers, and the information about attribute weights is completely unknown. A score function is first used to calculate the score of each attribute value and a score matrix is constructed, and then it is transformed into a normalized score matrix. Based on the normalized score matrix, an entropy-based procedure is proposed to derive attribute weights. Furthermore, the additive weighted averaging operator is utilized to fuse all the normalized scores into the overall scores of alternatives, by which the ranking of all the given alternatives is obtained. This paper is concluded by extending the above results to interval-valued intuitionistic fuzzy set theory, and an illustrative example is also provided.     

Extension of the TOPSIS method based on prospect theory and trapezoidal intuitionistic fuzzy numbers for group decision making

Considering the decision maker＇s risk psychological factors and information ambiguity under uncertainty, a novel TOPSIS based on prospect theory （PT） and trapezoidal intuitionistic fuzzy numbers （YrIFNs） for group decision making is investigated, in which the criteria values and the criteria weights take the form of TrIFNs, and weights of decision makers are unknown. Firstly, distance measures for TrIFNs are used to induce value function under trapezoidal intuitionistic fuzzy environment. Secondly, the concepts of distance measures and trapezoidal intuitionistie fuzzy weighted averaging operator are employed to induce the weights of decision makers and thus the decision makers＇ options can be aggregated. Then the PT-based separation measures and relative closeness coefficient are defined and an algorithm for ranking alternatives under trapezoidal intuitionistic fuzzy environment is proposed. Finally, a numerical example further illustrates the practicality and effectiveness of the proposed TOPSIS method.     

对方案有偏好的区间直觉模糊多属性决策方法

针对属性权重信息未知或属性权重信息不完全且属性值和对方案的偏好值均为区间直觉模糊数多属性决策问题,基于偏差极小化的思想,给出了相应的决策分析方法。首先引入了区间直觉模糊数的一些运算法则、区间直觉模糊数的得分函数和精确函数。然后分别对权重信息未知或权重信息不完全且属性值和对方案的偏好值均为区间直觉模糊数多属性决策方法进行了研究,给出了基于最小偏差的目标规划模型,从而获得相应的属性权重,基于区间直觉模糊数加权平均(IIFWA)算子对区间直觉模糊信息进行集结,进而根据得分函数和精确函数对方案进行排序。最后,进行了实例分析,说明了该方法的实用性和有效性。     

Aggregation operators on intuitionistic trapezoidal fuzzy number and its application to multi-criteria decision making problems

Intuitionistic trapezoidal fuzzy numbers and their operational laws are defined. Based on these op-erational laws, some aggregation operators, including intuitionistic trapezoidal fuzzy weighted arithmetic averaging operator and weighted geometric averaging operator are proposed. Expected values, score function, and accuracy function of intuitionitsic trapezoidal fuzzy numbers are defined. Based on these, a kind of intuitionistic trapezoidal fuzzy multi-criteria decision making method is proposed. By using these aggregation operators, criteria values are aggregated and integrated intuitionistic trapezoidal fuzzy numbers of alternatives are attained. By comparing score function and accuracy function values of integrated fuzzy numbers, a ranking of the whole alternative set can be attained. An example is given to show the feasibility and availability of the method.     

Interval-valued intuitionistic fuzzy aggregation operators

The notion of the interval-valued intuitionistic fuzzy set (IVIFS) is a generalization of that of the Atanassov’s intuitionistic fuzzy set. The fundamental characteristic of IVIFS is that the values of its membership function and non-membership function are intervals rather than exact numbers. There are various averaging operators defined for IVIFSs. These operators are not monotone with respect to the total order of IVIFS, which is undesirable. This paper shows how such averaging operators can be represented by using additive generators of the product triangular norm, which simplifies and extends the existing constructions. Moreover, two new aggregation operators based on the ukasiewicz triangular norm are proposed, which are monotone with respect to the total order of IVIFS. Finally, an application of the interval-valued intuitionistic fuzzy weighted averaging operator is given to multiple criteria decision making.     

直觉模糊偏好信息下的多属性决策途径

研究了属性值为直觉模糊数且决策者对方案有偏好的模糊多属性决策问题.针对方案偏好信息以直觉判断矩阵形式给出且属性权重信息不能确知的情形,定义了加型一致性直觉判断矩阵、积型一致性直觉判断矩阵以及直觉模糊决策矩阵的得分矩阵等新概念.基于得分矩阵和直觉判断矩阵,分别利用两种转换函数建立一些简洁的线性规划模型.通过求解这些模型获得属性的权重,进而给出了一种基于直觉模糊偏好信息的多属性决策途径.最后通过实例对该决策途径的详细过程及有效性进行了说明.     

区间直觉模糊幂加权算子的动态多属性决策

为了解决集结算子处理动态多属性决策问题时,现有的区间直觉模糊(interval valued intuitionistic fuzzy, IVIF)加权平均算子未考虑集结数据之间的相互关系、决策结果精度不高的不足,利用幂加权几何平均(power weighted geometric average,PWGA)算子的非线性特性将集结数据之间相互关系联系起来,提出了IVIF PWGA算子的动态多属性决策方法。首先,将实数形式的PWGA算子扩展到区间直觉模糊集(IVIF set,IVIFS),利用数学归纳法证明了数据融合后的综合集结值是区间直觉模糊数(interval valued intuitionistic fuzzy number, IVIFN)的结论。然后,定义了IVIF条件下,处理动态多属性决策问题的PWGA算子。通过动态PWGA算子集结多个时间点的单一集结值得到综合集结值,根据综合集结值的得分函数和精确函数,对各方案排序。最后,通过实例说明了该算法的有效性。     

基于新距离测度的直觉模糊VIKOR多属性决策方法

针对属性与决策者权重未知且方案属性值为直觉模糊数的多属性决策问题,并充分考虑直觉模糊环境下信息波动性与不具体性,提出了一种基于新的直觉模糊距离测度和多准则妥协解排序(VlseKriterijumska optimizacija I kompromisno resenje,VIKOR)法的多属性决策方法。首先拓展补充了直觉模糊距离测度的定义,在此基础上构建了新的直觉模糊距离公式以减少决策信息缺乏,利用直觉模糊熵确定属性与决策者权重,然后再运用新的直觉模糊距离计算VIKOR法中的群体效用和个体后悔度进而得到决策结果,最后,通过实际案例分析验证了该方法的合理性与有效性。     

基于模糊C-OWA算子的模糊多属性决策方法

将连续区间数据OWA(C-OWA)算子扩展到模糊环境,提出了一些新的模糊C-OWA(FC-OWA)算子,如加权FC-OWA(WFC-OWA)算子、悲观WFC-OWA(PWFC-OWA)算子和乐观WFC-OWA(OWFC-OWA)算子,并研究了它们的一些性质.基于PWFC-OWA算子和OWFC-OWA算子,提出了属性值和属性权重为梯形模糊数的多属性决策方法.最后通过算例说明了方法的可行性和有效性.     

基于一类新的直觉模糊熵的多属性决策方法研究

针对现有的直觉模糊熵只考虑了隶属度与非隶属度的偏差,而未考虑直觉模糊集自身包含的犹豫度信息的缺憾,本文提出了一类新的直觉模糊熵,它可以充分表达决策者的犹豫度信息.在此基础上,针对属性权重完全未知和属性权重信息部分已知的直觉模糊多属性决策问题,分别通过熵权法和利用最小化直觉模糊熵建立的最优化模型求解属性权重,给出了直觉模糊多属性决策的折中比值法.最后,通过应用实例说明了所提出方法的有效性和可行性.     

Generalized ordered weighted averaging operators based method for MADM in intuitionistic fuzzy set setting

Multiattribute decision making (MADM) problems, in which the weights and ratings of alternatives are expressed with intuitionistic fuzzy (IF) sets, are investigated. Firstly, the relative degrees of membership and the relative degrees of non-membership are formulated as IF sets, the weights and values of alternatives on both qualitative and quantitative attributes may be expressed as IF sets in a unified way. Then a MADM method based on generalized ordered weighted averaging operators is proposed. The proposed method is illustrated with a numerical example.     

Some new similarity measures for intuitionistic fuzzy values and their application in group decision making

We first propose a series of similarity measures for intuitionistic fuzzy values (IFVs) based on the intuitionistic fuzzy operators (Atanassov 1995). The parameters in the proposed similarity measures can control the degree of membership and the degree of non-membership of an IFV, which can reflect the decision maker’s risk preference. Moreover, we can obtain some known similarity measures when some fixed values are assigned to the parameters. Furthermore, we apply the similarity measures to aggregate IFVs and develop some aggregation operators, such as the intuitionistic fuzzy dependent averaging operator and the intuitionistic fuzzy dependent geometric operator, whose prominent characteristic is that the associated weights only depend on the aggregated intuitionistic fuzzy arguments and can relieve the influence of unfair arguments on the aggregated results. Based on these aggregation operators, we develop some group decision making methods, and finally extend our results to interval-valued intuitionistic fuzzy environment.     

基于 ITFN 信息关联输入的改进群体 MULTIMOORA 决策方法

提出基于直觉梯形模糊数(intuitionistic trapezoidal fuzzy number, ITFN)极小、极大期望值的序关系判别准则, 并引入风险系数构建ITFN相对完善的带有决策者风险偏好的运算规则, 在此基础上定义直觉梯形模糊Bonferroni (intuitionistic trapezoidal fuzzy Bonferroni, ITFB)平均算子, 验证其相关性质. 针对决策者之间、属性之间分别存在关联关系且权重均未知的多属性群决策问题, 提出基于ITFN信息关联输入的改进群体MULTIMOORA决策方法. 首先, 构建直觉梯形模糊决策矩阵序列, 予以标准化处理, 并将其转化为极小期望决策矩阵序列; 其次, 综合利用基于熵权法和考虑决策者偏好关联的基于2-可加模糊测度与Choquet积分联合的主客观赋权法确定决策者权重及属性权重; 最后, 分别引入WITFB平均算子及ITFN的Hamming 距离以改进传统MULTIMOORA决策方法, 基于优势理论可对方案展开综合排序以确定最优方案. 通过算例分析验证本文方法的可行性及有效性.     

Intuitionistic fuzzy hierarchical clustering algorithms

Intuitionistic fuzzy set (IFS) is a set of 2-tuple arguments, each of which is characterized by a mem-bership degree and a nonmembership degree. The generalized form of IFS is interval-valued intuitionistic fuzzy set (IVIFS), whose components are intervals rather than exact numbers. IFSs and IVIFSs have been found to be very useful to describe vagueness and uncertainty. However, it seems that little attention has been focused on the clus-tering analysis of IFSs and IVIFSs. An intuitionistic fuzzy hierarchical algorithm is introduced for clustering IFSs, which is based on the traditional hierarchical clustering procedure, the intuitionistic fuzzy aggregation operator, and the basic distance measures between IFSs: the Hamming distance, normalized Hamming, weighted Hamming, the Euclidean distance, the normalized Euclidean distance, and the weighted Euclidean distance. Subsequently, the algorithm is extended for clustering IVIFSs. Finally the algorithm and its extended form are applied to the classifications of building materials and enterprises respectively.     

直觉模糊幂Heronian平均算子及其在多属性决策中的应用

针对需要同时捕获变量个体间的关联性和整体均衡性的信息融合问题,本文在直觉模糊环境下,将Heronian平均算子和幂平均算子相结合,提出了直觉模糊幂Heronian平均算子和直觉模糊加权幂Heronian平均算子.新算子利用Heronian平均算子的交叉运算来体现变量的关联性,同时引入支撑度系数来挖掘信息的相对贴近度,从而在信息融合过程中体现整体性.此外,还探讨了新算子的一些优良性质和特例,并给出一种多属性决策方法.最后,通过算例验证了该方法的可行性与有效性.     

基于混合型评价矩阵的多属性群决策方法

本文针对具有语言型、直觉模糊数和区间直觉模糊数三种评价信息的混合型多属性群决策问题, 提出一种基于属性权重和专家权重均未知的决策方法. 首先, 定义新的转换函数, 可将不同粒度的语言评价信息统一成区间直觉模糊数; 然后, 基于支持度确定未知属性权重, 并在综合考虑区间直觉模糊数熵值和相似度的基础上, 建立了一种新的专家权重确定模型; 在将混合型决策矩阵转换成区间直觉模糊决策矩阵后, 利用IIFWA算子依次集结个体决策矩阵, 从而得出方案集的排序. 最后, 应用在ERP选优问题中, 验证了方法的有效性.     

基于关联的三角模糊数直觉模糊集成算子及其应用

针对三角模糊数直觉模糊信息下属性间存在关联使得已有集结算子失效的问题, 引入模糊测度的概念, 在三角直觉模糊数的运算法则基础上构建了基于关联的加权平均集成算子, 即三角模糊数直觉模糊关联有序加权平均R-TIOWA算子、三角模糊数直觉模糊关联加权几何平均R-TIWGA算子和三角模糊数直觉模糊关联有序加权几何平均R-TIOWGA算子, 探讨了上述算子的若干性质．并在此基础上构建一种属性值为三角模糊数直觉模糊数的多属性群决策方法．实例分析验证了该方法的可行性和有效性．