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 approa...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.展开更多
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 soluti...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。展开更多
由于社会网络分析可以反映决策者在大群体决策(large group decision making,LGDM)共识问题中的社会关系,因此研究基于社会网络的LGDM共识问题具有现实意义。本文通过考虑决策者之间的社会网络关系,提出了一种交互式共识模型:首先,根据...由于社会网络分析可以反映决策者在大群体决策(large group decision making,LGDM)共识问题中的社会关系,因此研究基于社会网络的LGDM共识问题具有现实意义。本文通过考虑决策者之间的社会网络关系,提出了一种交互式共识模型:首先,根据决策者之间的社会关系,采用Louvain方法对网络进行聚类,以降低大规模社会网络的复杂性;然后,基于可能性分布的犹豫模糊元素来表示每个子群的偏好,根据社会网络分析的中心性,计算决策者和子群权重;随后,给出三个层次的共识测量和反馈机制,来加速共识的达成过程。该模型在一致性调整过程中,整个社会网络也随之更新,允许子群分类的改变,而且考虑决策者的交互使结果更容易被接受。最后,通过案例分析验证方法的可行性,并通过与现有方法的比较,说明了方法的优越性。展开更多
基金supported by the National Natural Science Foundation of China(71171112 71502073+2 种基金 71601002)the Scientific Innovation Research of College Graduates in Jiangsu Province(KYZZ150094)the Anhui Provincial Natural Science Foundation(1708085MG168)
文摘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.
文摘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。
文摘由于社会网络分析可以反映决策者在大群体决策(large group decision making,LGDM)共识问题中的社会关系,因此研究基于社会网络的LGDM共识问题具有现实意义。本文通过考虑决策者之间的社会网络关系,提出了一种交互式共识模型:首先,根据决策者之间的社会关系,采用Louvain方法对网络进行聚类,以降低大规模社会网络的复杂性;然后,基于可能性分布的犹豫模糊元素来表示每个子群的偏好,根据社会网络分析的中心性,计算决策者和子群权重;随后,给出三个层次的共识测量和反馈机制,来加速共识的达成过程。该模型在一致性调整过程中,整个社会网络也随之更新,允许子群分类的改变,而且考虑决策者的交互使结果更容易被接受。最后,通过案例分析验证方法的可行性,并通过与现有方法的比较,说明了方法的优越性。
