Fuzzy interval linguistic sets with applications in multi-attribute group decision making

Uncertain and hesitant information, widely existing in the real-world qualitative decision making problems, brings great challenges to decision makers. Hesitant fuzzy linguistic term sets(HFLTSs), an effective linguistic computational tool in modeling and eliciting such information, have hence aroused many scholars’ interests and some extensions have been introduced recently.However, these methods are based on the discrete linguistic term framework with the limited expression domain, which actually depict qualitative information using several single values. Therefore,it is hard to ensure the integrity of the semantics representation and the accuracy of the computation results. To deal with this problem, a semantics basis framework called complete linguistic term set(CLTS) is designed, which adopts a separation structure of linguistic scale and expression domain, enriching semantics representation of decision makers. On this basis the concept of fuzzy interval linguistic sets(FILSs) is put forward that employs the interval linguistic term with probability to increase the flexibility of eliciting and representing uncertain and hesitant qualitative information. For practical applications, a fuzzy interval linguistic technique for order preference by similarity to ideal solution(FILTOPSIS) method is developed to deal with multi-attribute group decision making(MAGDM) problems. Through the cases of movie and enterprise resource planning(ERP) system selection, the effectiveness and validity of the proposed method are illustrated.

Dynamic hesitant fuzzy linguistic group decision-making from a reliability perspective

A dynamic hesitant fuzzy linguistic group decisionmaking(DHFLGDM) problem is studied from the perspective of information reliability based on the theory of hesitant fuzzy linguistic term sets(HFLTSs). First, an approach is applied to transform the dynamic HFLTSs(DHFLTSs) into a set of proportional linguistic terms to eliminate the time dimension. Second, expert reliability is measured by considering both group similarity and degree of certainty, and an optimization method is employed to quantify the linguistic terms by maximizing the group similarity. Third, through computing the attribute stability as well as its reliability, a combination rule which considers both reliability and weight is proposed to aggregate the information, and then the aggregated grade values and degree of stability are used to make a selection. Finally,the application and feasibility of the proposed method are verified through a case study and method comparison.

An Evidence-Based CoCoSo Framework with Double Hierarchy Linguistic Data for Viable Selection of Hydrogen Storage Methods

Hydrogen is the new age alternative energy source to combat energy demand and climate change.Storage of hydrogen is vital for a nation’s growth.Works of literature provide different methods for storing the produced hydrogen,and the rational selection of a viable method is crucial for promoting sustainability and green practices.Typically,hydrogen storage is associated with diverse sustainable and circular economy(SCE)criteria.As a result,the authors consider the situation a multi-criteria decision-making(MCDM)problem.Studies infer that previous models for hydrogen storage method(HSM)selection(i)do not consider preferences in the natural language form;(ii)weights of experts are not methodically determined;(iii)hesitation of experts during criteria weight assessment is not effectively explored;and(iv)three-stage solution of a suitable selection of HSM is unexplored.Driven by these gaps,in this paper,authors put forward a new integrated framework,which considers double hierarchy linguistic information for rating,criteria importance through inter-criteria correlation(CRITIC)for expert weight calculation,evidence-based Bayesian method for criteria weight estimation,and combined compromise solution(CoCoSo)for ranking HSMs.The applicability of the developed framework is testified by using a case example of HSM selection in India.Sensitivity and comparative analysis reveal the merits and limitations of the developed framework.

Warhead power assessment based on double hierarchy hesitant fuzzy linguistic term sets theory and gained and lost dominance score method

Warhead power assessment of the anti-ship missile plays a vital role in determining the optimal design of missile, thus having important strategic research significance. However, in the assessment process, expert’s judgement will directly affect the assessment accuracy. In addition,there are many criteria involved in the missile design alternatives. Some criteria with poor performance may be compensated by other criteria with excellent performance, and then it is impossible to find the truly optimal alternative. Aimed at solving these problems, this paper proposes a synthetical assessment process based on fuzzy hesitant linguistic term set and the Gained and Lost Dominance Score(GLDS) method. In order to improve the assessment accuracy of experts and solve the problem that experts generate different opinions, combined with the advantages of fuzzy hesitant sets and linguistic term sets, the double hierarchy hesitant fuzzy linguistic term sets are used in this paper to improve the accuracy of expert’s judgement. In order to effectively combine expert’s experience with the data of criteria, the evidence theory and entropy weight method are used to transfer the expert’s judgement to the weight. In order to avoid selecting defective alternative of missile design, the GLDS is used to fuse expert information and criteria information. Sensitivity analysis shows that the assessment process has sensitivity to some extent. However, when the fluctuation of expert’s assessment makes the fluctuation of θ in the range of-5% to 5%, the impact on the results is not quite conspicuous. The analysis of calculation result and comparative analysis show that the assessment process proposed in this paper is accurate enough, has great advantage in selecting the current and potential optimal alternative of missile design, and avoids the alternatives with low criteria performance that cannot be compensated by other criteria being selected.

Interval-Valued Dual Hesitant Fuzzy Hamacher Aggregation Operators for Multiple Attribute Decision Making

As an generalization of hesitant fuzzy set, interval-valued hesitant fuzzy set and dual hesitant fuzzy set, interval-valued dual hesitant fuzzy set has been proposed and applied in multiple attribute decision making. Hamacher t-norm and t-conorm is an generalization of algebraic and Einstein t-norms and t-conorms. In order to combine interval-valued dual hesitant fuzzy aggregation operators with Hamacher t-norm and t-conorm. We first introduced some new Hamacher operation rules for interval-valued dual hesitant fuzzy elements. Then, several interval-valued dual hesitant fuzzy Hamacher aggregation operators are presented, some desirable properties and their special cases are studied. Further, a new multiple attribute decision making method with these operators is given,and an numerical example is provided to demonstrate that the developed approach is both valid and practical.

基于FDHHFLTS-BN的海底管道泄漏失效风险定量分析

为预防海底油气管道泄漏失效事故,提出基于自由双层次犹豫模糊语言术语集(FDHHFLTS)和贝叶斯网络(BN)的FDHHFLTS-BN风险分析方法,用于分析海底油气管道泄漏失效事故概率及事故的关键风险因素。将故障树模型转换为BN结构,由专家根据FDHHFLTS评估基本事件发生可能性;采用最佳最差法(BWM)确定专家权重,结合相似性聚合方法(SAM)聚合专家意见;依据构建的BN模型,正向推理得到事故发生概率,反向推理得到后验概率,并进行敏感性分析。将该方法应用于实例分析,结果表明:分析段海底管道泄漏事故的概率值为P=6.20×10^(-3);焊缝施工缺陷、材料施工缺陷和渔具作用等为事故发生的关键因素;与传统方法对比分析结果证明,所提方法在确定海底管道风险方面具有一定的优势。

基于多粒度犹豫模糊语言术语集的TOPSIS决策方法研究

为了解决在实际决策时,由于知识背景不同决策者采用不同粒度语言术语集来表达而导致决策结果不准确的问题,本文提出了一种基于多粒度犹豫模糊语言术语集的逼近理想解排序(technique for order preference by similarity to ideal solution,TOPSIS)决策方法。首先选用各术语集中的最大粒度作为标准粒度,通过转换算法将每个决策者的语言术语集转换到同一标准粒度下进行集结,得出相应的隶属度语言术语集;然后结合TOPSIS方法,计算每个备选方案与正、负理想点距离,以相对贴近度的大小排序实现最优方案的选择;最后,通过一个实例,验证该方法的可行性和优越性。本文所提方法可应用于最优方案的选择问题中,提升决策结果准确度。

数据驱动的犹豫模糊语言信息策略优先权排序方法

数据挖掘使得决策者获取信息更为方便有效。本文在冲突分析图模型理论框架下,首先基于数据对冲突策略进行挖掘,实现了冲突策略的合理构建。其次,考虑到现实冲突中决策者对某策略的选择更多表现为一种被选择的可能性,将犹豫模糊语言信息和冲突分析图模型理论进行有效交叉融合,采用犹豫模糊语言信息进行评估,并基于粗糙集思想对犹豫模糊语义评价信息进行集结以代表这种可能性;进一步地,提出一种新的基于犹豫模糊语言信息的冲突分析图模型策略优先权排序法。最后,对沭河跨境水污染进行建模分析,对沭河水污染治理提出建议,并且就状态排序结果对比了新旧两种方法,结果验证本文提出方法的合理性。

WPLTS多属性群决策问题的点坐标解法

为了解决加权概率语言术语集(WPLTS)多属性群决策问题,将该问题转换为加权概率犹豫模糊集(WPHFS)多属性群决策问题,并从点坐标的角度出发建立了解决WPHFS多属性群决策问题的一种算法.首先,将WPHFS中的隶属度、概率、专家权重以点坐标形式刻画,在此基础上提出了加权概率犹豫模糊元(WPHFE)的相关运算;其次,分别建立了计算决策专家综合权重以及属性综合权重的计算模型;最后,采用Maclaurin对称平均算子集结WPHFE以获取每个方案的综合属性值.决策结果表明,WPLTS多属性群决策算法不仅可行,而且可以从多个角度来客观地分析方案的排序问题,为精准地确定最优方案提供了一种有效路径.

基于HFLTS中融合专家权重的群决策模型

针对犹豫模糊语言术语集多属性群决策(HFLTSMAGDM)问题,从平面坐标的角度出发建立了一类决策模型.在犹豫模糊语言术语集(HFLTS)中添加决策专家权重,进而构建一种加权的犹豫模糊语言术语集(WHFLTS);将WHFLTS转换为加权的区间值犹豫模糊集(WIVHFS),并对WIVHFS中的区间数(IN)进行测度,把IN的测度结果与其对应的决策专家权重以平面点坐标形式进行描述,在此基础上建立了2个犹豫模糊元(HFE)的大小比较规则及度量2个HFE的距离模型;分别定义了计算属性的整体权重、个体权重以及综合权重的计算方法,在属性的不同权重类别下皆采用Maclaurin对称平均算子集结HFE以获取各方案的综合属性值.案例分析表明,将WHFLTS转换为加权的犹豫模糊集并以平面坐标形式书写而建立的决策算法是可行的,且决策模型具有很好的稳定性.

基于犹豫模糊语言决策信息的被执行人聚类算法

针对法院“执行难”现状,将模糊聚类分析方法应用于司法执行领域,聚类的数据类型拓展为犹豫模糊语言信息,构建了一套完整的被执行人隐匿财产行为评估体系。通过估测被执行人隐匿财产的量化概率,为执行法官确定查控重点提供了决策支持。对当前的犹豫模糊语言距离测度存在的局限性进行了分析,给出了犹豫模糊语言犹豫度的定义和新的犹豫模糊语言距离计算方法。采用离差最大化思想确定最优属性权重,提出了一种基于离差最大化的犹豫模糊语言凝聚式层次聚类算法。犹豫模糊语言决策信息环境下的被执行人聚类分析算例验证了评估体系和聚类算法的有效性。

基于云模型的船舶建造项目后评价

为提高船舶建造项目后评价中专家评价信息融合结果的准确性,建立一种基于云模型的船舶建造项目综合效果评价方法。采用偏差熵模型计算专家的一致性判断矩阵,再通过模糊层次分析法(fuzzy analytic hierarchy process,FAHP)确定指标权重;基于犹豫模糊语言术语集和云模型特征参数,量化评价信息的模糊性和不确定性,建立船舶建造项目综合效果评价云模型,通过云模型计算得到云图即可评价船舶建造项目的综合效果。分析表明:偏差熵模型可用于计算专家对一致性意见的贡献度,提高指标权重计算的准确性;基于犹豫模糊语言术语集的云模型评价方法能兼顾评价信息的模糊性和不确定性,减少专家经验差异对评价结果的影响,适用于船舶建造项目的综合效果评价。

Prioritizing real estate enterprises based on credit risk assessment:an integrated multi‑criteria group decision support framework

Credit risk assessment involves conducting a fair review and evaluation of an assessed subject’s solvency and creditworthiness.In the context of real estate enterprises,credit risk assessment provides a basis for banks and other financial institutions to choose suitable investment objects.Additionally,it encourages real estate enterprises to abide by market norms and provide reliable information for the standardized management of the real estate industry.However,Chinese real estate companies are hesitant to disclose their actual operating data due to privacy concerns,making subjective evalu-ation approaches inevitable,occupying important roles in accomplishing Chinese real estate enterprise credit risk assessment tasks.To improve the normative and reliability of credit risk assessment for Chinese real estate enterprises,this study proposes an integrated multi-criteria group decision-making approach.First,a credit risk assessment index for Chinese real estate enterprises is established.Then,the proposed framework combines proportional hesitant fuzzy linguistic term sets and preference ranking organization method for enrichment evaluation II methods.This approach is suitable for processing large amounts of data with high uncertainty,which is often the case in credit risk assessment tasks of Chinese real estate enterprises involving massive subjec-tive evaluation information.Finally,the proposed model is validated through a case study accompanied by sensitivity and comparative analyses to verify its rationality and feasibility.This study contributes to the research on credit assessment for Chinese real estate enterprises and provides a revised paradigm for real estate enterprise credit risk assessment.

犹豫模糊语言距离测度及其在多属性决策中的应用

针对现有犹豫模糊语言距离测度存在不满足直递性、改变了原始决策信息、忽略了犹豫度差异等方面的问题,提出了一系列更为合理的新型犹豫模糊语言距离测度方法。首先,对现有犹豫模糊语言距离测度的局限性进行了枚举和分析。其次,给出了犹豫模糊语言犹豫度的定义,分别提出了犹豫模糊语言集的Euclidean距离、Hamming距离、Hamming-Hausdorff距离、Euclidean-Hausdorff距离以及它们的广义形式、加权形式和广义加权形式等一系列新型犹豫模糊语言距离测度,并对新型犹豫模糊语言距离测度的相关性质和定理进行了证明。在此基础上,提出了一种基于新型犹豫模糊语言距离测度和离差最大化的多属性决策方法。最后,通过具体算例和对比分析验证了新型犹豫模糊语言距离测度和多属性决策方法的可行性和有效性。

基于语言图犹豫模糊Hamy平均算子的多属性决策方法

将图犹豫模糊集与语言术语集结合,定义了语言图犹豫模糊集和语言图犹豫模糊数的运算,为比较语言图犹豫模糊数的大小,考虑了语言图犹豫模糊数中元素的离散程度对评估结果的影响,定义了得分函数和精确函数,提高了得分函数对语言图犹豫模糊数的区分能力。结合Hamy平均算子,定义了语言图犹豫模糊Hamy平均算子,研究了语言图犹豫模糊Hamy平均算子的性质,并提出了语言图犹豫模糊Hamy平均算子的多属性决策方法。最后,将其应用于建筑公司原料供应商的选择中,并与现有方法进行对比分析,验证了所提方法的有效性和可行性。

基于组合权重的犹豫模糊语言决策方法

犹豫模糊语言决策方法中的权重需要人为给出,具有较大主观性,导致决策结果不稳定。针对该问题,提出一种组合权重,用于解决犹豫模糊语言多属性决策中权重未知的问题,并克服因主观权重带来的不确定性。通过最大偏差方法分别获得犹豫模糊语言集中的犹豫模糊集与语言集的客观权重,对这2种客观权重进行组合并归一化,从而得到组合权重,并给出基于组合权重的逼近理想解排序法的决策方法与犹豫模糊语言组合加权几何算子决策方法。实例结果表明,2种方法的决策结果相同,验证了组合权重的可行性。

基于多目标属性权重优化的犹豫模糊语言TOPSIS决策方法

犹豫模糊语言术语集作为一种有效的信息表达形式,能够很好的反映出人们的定性且犹豫的决策信息。传统的距离测度会导致犹豫模糊语言信息的流失,因此,本文首先提出了一种新的犹豫模糊语言距离测度,并研究了该距离测度的性质。其次,针对属性权重完全未知的犹豫模糊语言多属性决策问题,考虑方案和属性两个层面,构建了多目标优化的属性权重确定模型。进而,基于多目标权重优化模型和犹豫模糊语言距离测度,提出了一种改进的犹豫模糊语言TOPSIS法。最后通过实例说明了所提出的TOPSIS法的实用性和有效性,并进行了灵敏度和比较分析。

犹豫模糊语言Heronian平均算子在多属性决策中的应用

针对输入变量之间的相互影响以及评价值为犹豫模糊语言信息的多属性决策问题,提出一种基于犹豫模糊语言Heronian平均算子的多属性决策方法。由于Heronian平均(HM)算子具有能够反映输入变量之间相互关联的良好特性,在犹豫模糊语言信息环境下,提出了两种新的集成算子,即犹豫模糊语言Heronian平均(HFLHM)算子和犹豫模糊语言几何Heronian平均(HFLGHM)算子,同时研究了它们的一些特性。考虑到输入变量具有不同的重要程度,还定义了犹豫模糊语言加权Heronian平均(HFLWHM)算子和犹豫模糊语言加权几何Heronian平均(HFLWGHM)算子。最后提出了基于HFLWHM算子和HFLWGHM算子的犹豫模糊语言多属性决策方法,并通过实例验证了这些算子的合理性和可行性。

基于语言值有序对三元组的多类型数据标准化方法

为了标准化处理多类型数据,基于语言值二元组,提出语言值有序对三元组表示模型,研究语言值有序对三元组及其性质,给出语言值有序对三元组之间的相似度.讨论语言值有序对三元组加权平均算子,构造模糊集、直觉模糊集、犹豫模糊集、语言真值直觉模糊集与语言值有序对三元组的标准化转化模型.结合语言值有序对三元组之间的相似度,将模糊集、直觉模糊集、犹豫模糊集、语言真值直觉模糊集的转化模型应用于模式识别中.最后,通过医院智能分诊的实例说明文中方法的合理性和有效性.

基于双重犹豫模糊语言的多属性决策方法

结合语言术语集和双重犹豫模糊集给出了双重犹豫模糊语言集的定义,并给出双重犹豫模糊语言数的运算法则和比较方法。针对属性值为双重犹豫模糊语言数的多属性决策问题,提出集结双重犹豫模糊语言信息的双重犹豫模糊语言加权平均算子以及基于此算子的多属性决策方法,并将所提的决策方法应用于选址建厂问题以说明其可行性和有效性。