一种多阶段交互式群体评价方法

针对传统的群体评价方法多是静态且无交互的不足,探讨了一种多阶段交互式的群体评价方法.在给出几个假设条件之后,对多阶段交互群体评价的过程进行了描述;然后从"纵向"和"横向"2个角度出发,分别给出了群体意见的稳定性指标和一致性指标,以此探讨交互终止的条件;在群体交互加权算子(DOWA算子 和DOWGA 算子)的基础上,对各轮交互结果进行了集结.最后给出了一个算例.     

基于复杂网络和语言信息的交互式大规模群体评价方法

针对现有基于语言信息的交互式群体评价方法大多仅适用于中小规模群体的情况,提出一种新的基于复杂网络和语言信息的交互式大规模群体评价方法。首先,将评价者视为网络节点,并依据节点之间的距离构建复杂网络;其次,设计节点紧密度和子群紧密度,并确定节点权重和子群权重;再次,定义群体稳定性指标和群体满意度指标,并以此来判断交互终止和确定阶段权重;最后,在节点密度算子和节点加权算子的基础上,分别对单轮群体意见和多轮评价结果进行集结。文末通过一个实际例子验证了所提方法的有效性与合理性。实例分析表明,该方法能够较为全面、准确地集结交互式大规模群体评价意见,且其结果的满意度亦较为理想。     

基于属性分布信息的大规模群体评价方法及应用

针对大规模群体评价中如何实现群体意见的有效集结,如何体现群体共识度对评价活动的影响等问题,本文提出了一种基于属性分布信息的群体评价方法。首先,利用群体评价信息构建各属性的分布,以体现群体对属性的共识程度,并结合属性取值区间,采用分布型区间数对群体评价信息进行描述;在定义分布型区间数运算规则的基础上,提出了属性权重也为分布型区间数的加权集结算子;然后,设计了基于分布型区间综合评价值的方案排序方法;最后,利用Matlab软件,给出了应用算例,结果表明方法具有可操作性和有效性。     

基于交互密度算子的交互式群体评价信息集结方法及其应用

交互式群体评价的一个难点问题是评价信息的集结问题,而国内较少有文献从信息集结算子的角度进行探讨,针对这种不足,同时考虑到信息分布密度是交互式群体评价信息集结的一个重要特征,本文提出了一种基于交互密度算子的交互式群体评价信息集结方法。提出了交互密度算术加权算子(IDWA)与交互密度几何加权算子(IDWGA)两种新的算子,并对新算子的相关性质进行了分析,同时介绍了IDWA和IDWGA算子加权向量(即密度权向量)的确定方法。最后将该方法进行了运用。文章对交互式评价信息集结问题提供了一种新的研究思路。     

基于社交网络分析的区间二元语义群决策方法研究

通过基于Steiner点的区间二元语义集结方法,将评价信息通过相关转化规则量化为对应的二维坐标系中的坐标点集,运用植物模拟生长算法获取对应区间点集的Steiner点(专家群体最优结集点,即群体共识点),按照逆映射关系还原为二元语义集结信息,从而提出一种基于社交网络分析和专家自信偏好关系的区间二元语义群决策问题的新方法。结合专家自信程度系数和社交网络结构中的影响力调整专家主观权重,结合专家相对重要系数与群体相似度系数获取客观权重,最终确定专家综合权重,并对方案进行择优排序。通过算例分析说明方法的可行性和有效性。     

基于两类残缺偏好信息的交互式群决策方法研究

提出不同残缺偏好信息的交互式群决策方法。利用矩阵元素之间的可达性关系,给出区间数判断矩阵残缺元素的确定方法。定义了不同偏好信息的群体满意度,基于群体判断与决策个体判断之问的偏离程度,与决策者进行交互,使得决策者的意见尽可能协调一致。根据修正意见求解得到方案排序,并通过算例说明方法的有效性。     

区间信息下的主客方协作式群体评价方法及其应用

目前关于主客方协作式评价问题的研究相对较少且主要是基于点值评价信息的,考虑到评价环境的复杂性与不确定性,本文将点值信息向区间信息方向拓展,探讨了一种新的区间信息下的主客方协作式群体评价方法。本文首先探讨了一种能够较好融合评价信息"质与量"的区间诱导密度加权合成算子-IIDWA;然后以主方信息完备度及客方信息诚信度为诱导分量分别对主客方评价信息进行聚类分组,并从规模和属性两个角度出发分别确定相应的密度加权向量;最后在主客方协作规则下,利用IIDWA算子对主客方区间信息分别进行二维集结,以得出最终综合评价结果。文章最后给出了一个应用算例,算例表明了方法的可行性与有效性。     

一种主客方交互式群体评价方法及其应用

传统的群体评价方法均不考虑被评价对象的参与,针对此缺陷提出了一种新的群体评价方法——主客方交互式群体评价方法。首先对主客方交互式评价的过程进行描述;然后给出交互过程中基于优先排序概率的单轮评价结果呈现方式;其次,给出群体评价的稳定性、满意性指标,以此探讨交互终止的条件;最后,定义了2个主客方交互加权算子,以此对各轮交互结果进行集结,得出最终的群体评价结论。     

基于经验相关矩阵的区间主成分分析

给出了针对区间数据样本的主成分分析方法.为此,首先研究了区间数据样本的经验描述统计量,其中包括单变量的均值与方差、双变量的协方差与相关系数.然后,基于经验相关矩阵,给出了区间主成分分析的算法,该算法最终得到区间数表达形式的主成分取值.最后给出算例,分析表明文中方法实施简单,克服了区间主成分分析现有方法的缺点.     

方案有不确定偏好的区间数相对熵群决策方法

研究了属性值是区间数并且已知方案偏好信息的多属性群决策问题。建立了每个方案客观偏好值与主观偏好值偏差的相对熵测度矩阵;基于客观信息和方案偏好信息的相对熵建立了属性权重模型;建立了一个新的区间数比较的可能度公式,基于可能度公式给出了方案排序方法,算例说明方法可行性。     

基于反映象相关矩阵的评价指标筛选方法研究

评价指标间信息重叠高会扭曲评价结果，而已有研究主要基于一个指标与部分指标间相关性降低指标集的信息重叠，指标剔除多且信息重叠降低得慢，极易导致评价信息过度损失。为此，本文首先引入取样适切性量数(MSA)表示一个评价指标与其余全部指标间信息重叠水平，引入KMO检验统计量表示一组评价指标整体信息重叠水平。在此基础上，依次剔除MSA值最大指标，直至剩余指标KMO值不高为止，快速降低评价指标集整体信息重叠。之后，通过剔除偏相关水平高的任两个指标中MSA值较大的一个指标，避免个别指标间信息重叠水平较高。最后，与目前应用最广泛的信息重叠指标筛选方法对比表明：本文方法降低指标集信息重叠效率更高，评价信息损失更少；既不会误删信息重叠水平低的评价指标，亦不会误保留信息重叠水平高的评价指标。     

Evaluation of the results of multi-attribute group decision-making with linguistic information

Multi-attribute group decision-making (MAGDM) has received increasing attentions in both engineering and economy fields. Correspondingly, many valuable methods have been developed to solve various MAGDM problems, but relatively, very few research results focus on the evaluation of the effect of MAGDM. In this paper, based on the existing MAGDM methods with linguistic information, three key evaluation indices, consistency, closeness and uniformity, are proposed to measure the results of MAGDM from different aspects. By comparing the individual overall preference values with the collective ones, the three indices cannot only provide a reference for judging the decision-making effect of each decision maker, but also reflect the effect of group decision-making to a certain extent. The practicality and effectiveness of the proposed method are shown by two heuristic examples. Furthermore, the proposed method will be helpful for setting and adjusting the weights of both attributes and decision makers, as well as for selecting and comparing various aggregation operators and methods in dynamic or interactive group decision-making.     

How to Design Rating Schemes of Risk Matrices: A Sequential Updating Approach

Risk matrices have been widely used as a risk evaluation tool in many fields due to their simplicity and intuitive nature. Designing a rating scheme, i.e., determining the number of ratings used in a risk matrix and assigning different ratings to different cells, is an essential part of risk matrix construction. However, most of the related literature has focused on applying a risk matrix to various fields, instead of researching how to design risk matrices. Based on the analysis of several current rules, we propose a new approach, namely, the sequential updating approach (SUA), to design the rating scheme of a risk matrix in a reliable way. In this article, we propose three principles and a rating algorithm based on these principles. The three principles, namely, adjusted weak consistency, consistent internality, and continuous screening, characterize a good rating scheme. The resulting rating scheme has been proven to be unique. A global rating algorithm is then proposed to create the design that satisfies the three principles. We then explore the performance of the SUA. An illustrative application is first given to explain the feasibility of our approach. The sensitivity analysis shows that our method captures a resolution‐reliability tradeoff for decisionmakers in choosing an appropriate rating scheme for a risk matrix. Finally, we compare the designs based on the SUA and Cox's axioms, highlighting the advantages of the SUA.     

Water resources management under multi-parameter interactions: A factorial multi-stage stochastic programming approach

The paper proposes a factorial multi-stage stochastic programming (FMSP) approach to support water resources management under uncertainty. This approach was developed based on the conventional inexact multi-stage stochastic programming method. Five alternative inexact multi-stage stochastic programming algorithms in addition to the conventional algorithm were introduced and bundled to offer multiple decision options that reflect decision makers' perspectives and the complexities in system uncertainties. More importantly, factorial analysis, a multivariate inference method, was introduced into the modeling framework to analyze the potential interrelationships among a variety of uncertain parameters and their impacts on system performance. The proposed approach was applied to a water resources management case. The desired water-allocation schemes were obtained to assist in maximizing the total net benefit of the system. Multiple uncertain parameters and their interactions were examined, and those that had significant influences on system performance were identified. For example, the medium flow in the third planning period was the system objective's most influential factor. Any variation of this factor would significantly influence the acquisition of the total net benefit in the community. The significant interactions were also identified, such as the interaction between the agricultural sector's penalty and the medium flow in the third planning period. Through the analysis of multi-parameter interactions, the interrelationships among the uncertain parameters could be further revealed.     

基于交叉效率DEA与群体共识的区间乘性语言偏好关系群决策

针对区间乘性语言偏好关系群决策问题，提出了一种基于交叉效率DEA和群体共识的群决策方法。首先，提出乘性语言偏好关系导出函数的定义，并构建产出导向的DEA模型，证明了一致性乘性语言偏好关系的DEA效率得分与排序向量之间存在比例关系。在此基础上，建立基于理想值的交叉效率DEA模型，提出乘性语言偏好关系的通用排序方法。同时，基于群体共识建立目标规划模型来计算各语言偏好关系的权重系数。最后，利用Monte Carlo随机模拟的方法对群体语言偏好空间进行统计分析，得到群决策期望排序向量及其可信度。算例分析表明本文方法能够有效的避免信息损失，具有较强的适用性和较高的可信度。