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基于直觉模糊集的突发事件应急预案评估 总被引:6,自引:0,他引:6
提出了一种基于直觉模糊集理论的突发事件应急预案评价的新方法.首先,定义了直觉模糊集和两个直觉模糊集之间的距离;然后,建立了应急预案评价指标体系,给出了直觉模糊正理想点和负理想点的概念,提出了基于直觉模糊集和TOPS IS法的应急预案评估方法.最后通过实例说明了该方法的有效性. 相似文献
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模糊多属性决策的直觉模糊集方法 总被引:11,自引:1,他引:10
基于直觉模糊集理论,提出了一种新的TOPSIS方法来研究模糊多属性决策问题。首先,根据直觉模糊集的几何意义,定义了两个直觉模糊集之间的距离,且每个备选方案的评价值用直觉模糊值表示;然后,根据TOPSIS原理,通过计算备选方案到直觉模糊正理想解和负理想解的距离,来确定备选方案的综合评价指数,以此判断方案的优劣次序。最后,通过一个具体实例说明该方法的有效性和具体应用过程。 相似文献
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模糊数直觉模糊集是直觉模糊集和区间数直觉模糊集的拓展,本文提出了二型直觉模糊数概念,对基于二型直觉模糊信息的多属性决策进行了研究.以结构元理论为基础,给出了二型直觉模糊数的距离公式,然后定义了二型直觉模糊正、负理想点,进而给出了一种基于二型直觉模糊数的多属性决策的步骤.最后通过实例来证明其有效性. 相似文献
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结合三角形直觉模糊数加权集结算子和TOPSIS方法,构建了基于三角形直觉模糊数的突发事件应急预案评估群决策模型.通过对森林大火扑救应急预案方案最优选择这个决策问题的计算和分析,表明了所提模型和方法的有效性、合理性和可行性. 相似文献
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基于区间值直觉模糊集的TOPSIS多属性决策 总被引:1,自引:0,他引:1
基于区间值直觉模糊集,提出了一种新的TOPSIS模糊多属性决策方法。首先介绍区间直觉模糊集的概念,定义了两个区间值直觉模糊集之间的距离;然后根据TOPSIS方法的原理,定义了两个区间值直觉模糊集的接近系数,通过计算备选方案到区间值直觉模糊正理想解和负理想解的距离来确定接近系数,从而判断备选方案的优劣次序。最后,通过一个具体实例来说明这种方法的有效性和具体计算过程。 相似文献
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《数学的实践与认识》2018,(22)
如何使MTO企业更有效地进行订单的评价和优选.针对MTO企业对订单重要性判定问题,建立了基于直觉模糊集和TOPSIS法的订单重要性综合评价模型.首先构建订单重要性评价指标体系,然后使用熵权法确定评价指标的权重,最后用直觉模糊集和TOPSIS的方法对订单重要性进行评价和选择.通过算例分析的应用验证了方法用于研究订单重要性优选的可行性.基于直觉模糊集和TOPSIS算法实现了订单重要性的评价与选择,以便于企业对订单进行评价和优选,同时为库存管理提供科学依据. 相似文献
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在煤矿突发事故初期,时间的紧迫性和环境的复杂性导致应急救援决策中的评估信息存在不确定性,传统基于确数的决策方法难以适用,对此本文提出了一种基于直觉模糊软集(IFSSs)的煤矿应急救援决策方法。首先对现有IFSSs熵公理化定义中的不合理之处进行修正,进而据此构造新的IFSSs熵计算公式,并通过与既有IFSSs熵公式的对比算例表现了新公式的合理性和有效性。然后基于新熵公式给出属性综合权重的确定方法,再利用推广的TOPSIS方法对预案进行排序以确定最优煤矿应急救援预案。最后将本文提出的方法应用于某煤矿应急救援实例。结果表明,基于IFSSs的煤矿应急救援决策方法能充分利用和有效处理不确定性的信息,具有更好的决策分辨效果,可以为煤矿突发事故的应急救援提供决策支持。 相似文献
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网络舆情突发事件由于短时间内信息收集不完备,具有明显的不确定性和社会危害性,各相关应急部门可能会按照自身利益偏好而提前制定多个应急备选方案来应对网络舆情危机.为及时高效地辅助决策者在不确定环境下从中选择实施最优方案,设计了基于直觉模糊集决策方法和Topsis法相结合的网络舆情突发事件应急方案评估决策模型,首先构建应急方案对各评估指标的直觉模糊集评估矩阵,接着利用改进的直觉模糊熵来确定各评估指标的客观权重,进而通过加权集结计算得到各应急备选方案的相对贴近度,并根据相对贴近度的大小对各应急备选方案进行优劣排序.最后通过一个具体算例验证了模型的有效性和可行性. 相似文献
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基于GOWA算子的直觉模糊多属性决策方法 总被引:1,自引:0,他引:1
针对直觉模糊环境下的多属性决策问题,提出了一种基于广义有序加权平均(GOWA)算子的决策方法。首先构造了直觉模糊集相对隶属度和相对非隶属度计算公式,使得决策方案的定性、定量指标的属性评价值和权重都可以用直觉模糊集进行统一描述,然后提出能集结直觉模糊集的GOWA算子,进而建立了直觉模糊多属性决策问题的GOWA决策方法。最后利用一个实例对文中模型与方法进行了验证、说明。 相似文献
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ZHENG ShiJun 《分析论及其应用》2004,20(3)
Schr(o)dinger operator is a central subject in the mathematical study of quantum mechanics.Consider the Schrodinger operator H = -△ V on R, where △ = d2/dx2 and the potential function V is real valued. In Fourier analysis, it is well-known that a square integrable function admits an expansion with exponentials as eigenfunctions of -△. A natural conjecture is that an L2 function admits a similar expansion in terms of "eigenfunctions" of H, a perturbation of the Laplacian (see [7], Ch. Ⅺ and the notes), under certain condition on V. 相似文献
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We study a class of self-similar processes with stationary increments belonging to higher order Wiener chaoses which are similar to Hermite processes. We obtain an almost sure wavelet-like expansion of these processes. This allows us to compute the pointwise and local Hölder regularity of sample paths and to analyse their behaviour at infinity. We also provide some results on the Hausdorff dimension of the range and graphs of multidimensional anisotropic self-similar processes with stationary increments defined by multiple Wiener–Itô integrals. 相似文献
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One of the most fundamental problems in theoretical biology is to explain the mechanisms by which patterns and forms are created in the'living world. In his seminal paper "The Chemical Basis of Morphogenesis", Turing showed that a system of coupled reaction-diffusion equations can be used to describe patterns and forms in biological systems. However, the first experimental evidence to the Turing patterns was observed by De Kepper and her associates(1990) on the CIMA reaction in an open unstirred reactor, almost 40 years after Turing's prediction. Lengyel and Epstein characterized this famous experiment using a system of reaction-diffusion equations. The Lengyel-Epstein model is in the form as follows 相似文献
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It is considered the class of Riemann surfaces with dimT1 = 0, where T1 is a subclass of exact harmonic forms which is one of the factors in the orthogonal decomposition of the spaceΩH of harmonic forms of the surface, namely The surfaces in the class OHD and the class of planar surfaces satisfy dimT1 = 0. A.Pfluger posed the question whether there might exist other surfaces outside those two classes. Here it is shown that in the case of finite genus g, we should look for a surface S with dimT1 = 0 among the surfaces of the form Sg\K , where Sg is a closed surface of genus g and K a compact set of positive harmonic measure with perfect components and very irregular boundary. 相似文献
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Pankaj Mathur 《分析论及其应用》2006,22(2)
In this paper, we study the explicit representation and convergence of (0, 1; 0)-interpolation on infinite interval, which means to determine a polynomial of degree ≤ 3n - 2 when the function values are prescribed at two set of points namely the zeros of Hn(x) and H′n(x) and the first derivatives at the zeros of H′n(x). 相似文献
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《高校应用数学学报(英文版)》2014,29(4)
正Applied Mathematics-A Journal of Chinese Universities,Series B(Appl.Math.J.Chinese Univ.,Ser.B)is a comprehensive applied mathematics journal jointly sponsored by Zhejiang University,China Society for Industrial and Applied Mathematics,and Springer-Verlag.It is a quarterly journal with 相似文献
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《数学研究及应用》2014,(6)
正Journal overview:Journal of Mathematical Research with Applications(JMRA),formerly Journal of Mathematical Research and Exposition(JMRE)created in 1981,one of the transactions of China Society for Industrial and Applied Mathematics,is a home for original research papers of the highest quality in all areas of mathematics with applications.The target audience comprises:pure and applied mathematicians,graduate students in broad fields of sciences and technology,scientists and engineers interested in mathematics. 相似文献
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A cumulative-capacitated transportation problem is studied. The supply nodes and demand nodes are each chains. Shipments from a supply node to a demand node are possible only if the pair lies in a sublattice, or equivalently, in a staircase disjoint union of rectangles, of the product of the two chains. There are (lattice) superadditive upper bounds on the cumulative flows in all leading subrectangles of each rectangle. It is shown that there is a greatest cumulative flow formed by the natural generalization of the South-West Corner Rule that respects cumulative-flow capacities; it has maximum reward when the rewards are (lattice) superadditive; it is integer if the supplies, demands and capacities are integer; and it can be calculated myopically in linear time. The result is specialized to earlier work of Hoeffding (1940), Fréchet (1951), Lorentz (1953), Hoffman (1963) and Barnes and Hoffman (1985). Applications are given to extreme constrained bivariate distributions, optimal distribution with limited one-way product substitution and, generalizing results of Derman and Klein (1958), optimal sales with age-dependent rewards and capacities.To our friend, Philip Wolfe, with admiration and affection, on the occasion of his 65th birthday.Research was supported respectively by the IBM T.J. Watson and IBM Almaden Research Centers and is a minor revision of the IBM Research Report [6]. 相似文献