共查询到19条相似文献,搜索用时 93 毫秒
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针对属性值为随机变量、清晰数和模糊数三种信息形式的多属性决策问题,提出了一种决策分析方法.在本文中,首先给出了混合占优准则的描述及相关分析,并提出了混合占优度的定义及其计算公式;然后,依据混合占优准则判断并确定两两方案之间比较的占优关系,进而计算得到两两方案之间比较的混合占优度,并构建相应的混合占优度矩阵,在此基础上,运用PROMETHEE Ⅱ方法得到方案的排序结果.最后,通过一个算例说明了本文给出方法的可行性和有效性. 相似文献
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一种具有不同形式效用值的群决策方法 总被引:4,自引:0,他引:4
研究了具有实数值、区间数和语言短语等三种形式效用值信息的群决策问题.首先给出了具有不同形式效用值的群决策问题的描述;然后给出了具有三种形式效用值的群决策方法的计算步骤.在该方法中,将不同形式的效用值均转化为区间数形式的效用值,通过加权法则得到每个方案的区间数群体综合效用值,并依据群体综合效用值进行方案的排序.最后通过给出一个算例说明了本给出的方法. 相似文献
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卫贵武 《数学的实践与认识》2008,38(7)
针对属性权重信息不完全且属性取值为精确数,区间数和模糊数相结合的混合型多属性决策问题,提出了一种基于理想解的多属性决策的灰色关联分析方法.首先将三种不同形式的属性值均转化为区间数形式,然后依据灰色关联分析的思路,给出了解决该问题的计算步骤,其核心是构建并求解一个单目标最优化模型,得到每个方案与正、负理想方案的关联度,进而计算出每个方案对正理想方案的相对关联度,即可得到所有方案的排序结果.最后给出了一个数值例子,结果表明方法简单,有效和易于计算. 相似文献
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多属性决策时因掌握的信息有限,加之问题本身的复杂性、不确定性以及人类思维的模糊性,其属性的精确值往往难以获取,常用区间数形式表示针对多属性决策中各指标区间数不能直接进行大小比较的问题,提出一种基于集对分析联系数的区间数型多属性决策投影模型.模型用备择方案在理想方案上的投影进行集结,根据区间数的误差分布形式,沟通区间数与联系数的关系,根据a+bi型联系数大小比较法则,综合评价方案优劣.以某大厦基坑支护拟用的4种方案优化选择为例,说明方法的应用与模糊优化理论模型和灰色物元分析优化模型进行了对比,得到的结果一致. 相似文献
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针对属性值以区间数形式给出的多属性决策问题,提出了一种决策分析方法。在本文中,首先描述了属性值为区间数形式的多属性决策问题;然后通过引入决策者的风险偏好因子将区间数决策信息映射为实数值决策信息,并依据属性值与属性均值绝对偏差的大小确定了属性的权重,在此基础上依据所得权重给出了基于加权和法的方案排序方法,通过对风险偏好因子的不同取值还可进行方案排序的灵敏度分析。最后,通过一个算例说明了本文给出方法的可行性和有效性。 相似文献
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通过两个反例从不同角度指出相关文献给出的关于一般变换的二阶随机占优的判定准则是错误的;并通过区分变换的单调性,分别给出单调递增与单调递减两种情形下二阶随机占优关系的判定方法. 相似文献
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《应用数学与计算数学学报》2015,(3)
给出了一种求解一般二次整数背包问题(quadratic integer knapsack problem,QIKP)的新算法.该方法把占优的概念与分支定界思想结合,旨在寻求全局最优解.对QIKP给出了占优的定义,通过变量系数之间的关系,很容易找到占优组和极小占优组,从而删除可行域中那些非最优点.新的占优定义对凹的二次函数尤其有效.在理论证明的基础上,设计相应的算法,并进行了数值计算.结果显示,在随机产生的例子中,该算法是有效的,并且与传统的分支定界算法相比,得到了更好的最优解,最优值有了较大的提升. 相似文献
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Intuitionistic fuzzy numbers (IFNs) have already been applied to many fields, especially in multi-attribute decision making (MADM). Based on the basic operational laws and information aggregation methods of IFNs, MADM with intuitionistic fuzzy information has become more and more popular. In this paper, we investigate the MADM problems where the attribute values take the form of interval numbers and the weight information on the attributes are expressed as IFNs. We first propose a novel exponential operational law based on IFNs and interval numbers, and then study some of its desirable properties. Based on the exponential operational law, we put forward an intuitionistic fuzzy weighted exponential aggregation operator, and utilize it to develop a MADM method. Finally, we apply our method to solve the decision making problem under uncertainty. 相似文献
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An extended TODIM method for multiple attribute group decision‐making based on 2‐dimension uncertain linguistic Variable 下载免费PDF全文
The significant characteristic of the TODIM (an acronym in Portuguese of Interactive and Multiple Attribute Decision Making) method is that it can consider the bounded rationality of the decision makers. However, in the classical TODIM method, the rating of the attributes only can be used in the form of crisp numbers. Because 2‐dimension uncertain linguistic variables can easily express the fuzzy information, in this article, we extend the TODIM method to 2‐dimension uncertain linguistic information. First of all, the definition, characteristics, expectation, comparative method and distance of 2‐dimension uncertain linguistic information are introduced, and the steps of the classical TODIM method for Multiple attribute decision making (MADM) problems are presented. Second, on the basis of the classical TODIM method, the extended TODIM method is proposed to deal with MADM problems in which the attribute values are in the form of 2‐dimension uncertain linguistic variables, and detailed decision steps are given. Its significant characteristic is that it can fully consider the bounded rationality of the decision makers, which is a real action in real decision making. Finally, a numerical example is provided to verify the developed approach and its practicality and effectiveness. © 2014 Wiley Periodicals, Inc. Complexity 21: 20–30, 2016 相似文献
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With respect to multiple attribute decision making (MADM) problems in which the attribute value takes the form of intuitionistic trapezoidal fuzzy number, and the attribute weight is unknown, a new decision making analysis methods are developed. Firstly, some operational laws and expected values of intuitionistic trapezoidal fuzzy numbers, and distance between two intuitionistic trapezoidal fuzzy numbers, are introduced. Then information entropy method is used to determine the attribute weight, and the grey relational projection method combined grey relational analysis method and projection method is proposed, and to rank the alternatives are done by the relative closeness to PIS which combines grey relational projection values from the positive ideal solution and negative ideal solution to each alternative. Finally, an illustrative example is given to verify the developed approach and to demonstrate its practicality and effectiveness. 相似文献
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概率语言术语集(PLTS)包含了语言术语信息及其相应的概率信息,使得原始决策信息得到充分利用,大大提高了语言术语多属性决策的科学性.文章研究了一种基于概率语言术语集类Pearson综合相关系数的TOPSIS多属性决策方法.首先考虑了PLTSs的3个特征因素:均值、方差和长度,然后基于传统Pearson相关系数的思想,提出了一种新的概率语言术语集类Pearson综合相关系数,其特征是可从完整性、分布情况和犹豫性3个方面描述PLTSs,且取值大小介于区间[-1,1],从而可度量变量之间的正负相关关系,改进了现有方法存在的缺陷.为融合属性指标的不同权重,提出了概率语言术语集加权类Pearson综合相关系数,其考虑了属性权重的重要性,拓宽了适用范围.进一步地,构建了基于类Pearson综合相关系数的概率语言术语相对贴近度指标,并在此基础上提出了一种基于类Pearson综合相关系数的概率语言术语TOPSIS多属性方法.最后,通过数值算例和比较分析,说明该方法的有效性和适用性. 相似文献
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An interactive procedure for linguistic multiple attribute decision making with incomplete weight information 总被引:6,自引:0,他引:6
Zeshui Xu 《Fuzzy Optimization and Decision Making》2007,6(1):17-27
In this paper, we consider the multiple attribute decision making (MADM) problems, in which the information about attribute
weights is partly known and the attribute values are expressed in linguistic labels. We first define the concepts of linguistic
positive ideal point, linguistic negative ideal point, and satisfactory degree of alternative. Based on these concepts, we
then establish some linear programming models, through which the decision maker interacts with the analyst. Furthermore, we
establish a practical interactive procedure for solving the MADM problems considered in this paper. The interactive process
can be realized by giving and revising the satisfactory degrees of alternatives till an optimum satisfactory solution is achieved.
Finally, a practical example is given to illustrate the developed procedure. 相似文献
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在装备技术方案选择中,为获取和表达决策者的偏好,实现对方案的选择,提出了基于支持向量机的多属性决策方法。首先,分析了多属性决策支持向量机方法的原理。其次,提出了基于属性效用函数估计的学习样本构造方法,从决策问题本身抽取学习样本。最后给出了一个算例。 相似文献