共查询到20条相似文献,搜索用时 765 毫秒
1.
不完全信息群体多属性决策的过滤函数法 总被引:3,自引:0,他引:3
对于不完全信息群体多属性决策问题,本文通过构造适当的过滤函数,充分利用高质量的信息和过滤掉低质量的信息,使效用信息的集结过程充分体现群体的意愿.在引进一致优、严格优和弱优等偏好指标的基础上,利用它们建立起方案集上合理的全序关系,从而构造了一个交互式的群体多属性决策方法. 相似文献
2.
本文先建立了一个具有TTT序关系的两个非负随机变量之间距离的概率度量,然后构造了一个非参数检验方法以判断严格的TTT序关系,利用L-统计理论获得了检验统计量的渐近分布,数值模拟的结果也表明该方法的性能是令人满意的. 相似文献
3.
一个全椭圆积分的上界估计 总被引:4,自引:0,他引:4
本文利用分析方法,通过构造辅助函数并研究其特性,证明了一个不等式,从而得到全椭圆积分的上界估计,改进了有关文献的结果.本文方法具有一般性. 相似文献
4.
5.
本文通过利用极大熵函数构造同伦映射,建立了求解无约束线性l1模问题的熵函数延拓算法,证明了方法的收敛性,并给出了数值算例. 相似文献
6.
7.
本文采用压力稳定化方法近似模拟不可压缩条件,进而构造了发展型非周期NavierStokes方程的全离散Legendre谱逼近计算格式,严格分析了格式的广义稳定性与收敛性.本文建立的逼近结果也适用其它非周期问题. 相似文献
8.
A.Mehaute和F.Utreras(1994)给出了一种平面函数型保凸插值构造光滑曲线的方法(以下简称为M-U方法).本文在利用其方法本质的基础上,给出了一种平面上参数型保凸插值构造光滑曲线的方法,同Mehaute和Utreras的方法一样,这里的方法也有局部性.另外这种方法还可以构造平面上的封闭曲线. 相似文献
9.
本文通过建立复Grassmann流形G2,n中调和曲面的Gauss丛的基本公式,在适当的拓扑条件下给出了G2,n中可兼共形调和曲面的构造定理.推广和改进了Burstall和Wood的低亏格曲面的结果. 相似文献
10.
本文借助一种新的求基转轴运算建立了带非线性不等式约束最优化问题的一个新的广义既约梯度法.算法不引入任何松驰变量,以致扩大问题的规模,也不需对约束函数和变量的界预先估计.另一重要特点是方法不再使用隐函数理论确定搜索方向,而是由简单的显式给出.因此方法计算量小,结构简单,便于应用.对于非K—T点x,我们构造的方向为可行下降的.本文证明了算法具有全局收敛性. 相似文献
11.
Jogi Henna 《Annals of the Institute of Statistical Mathematics》2005,57(4):655-664
An estimator of the number of components of a finite mixture ofk-dimensional distributions is given on the basis of a one-dimensional independent random sample obtained by a transformation
of ak-dimensional independent random sample. A consistency of the estimator is shown. Some simulation results are given in a case
of finite mixtures of two-dimensional normal distributions. 相似文献
12.
In this paper we determine the minimum and maximum values of the sum of squares of degrees of bipartite graphs with a given number of vertices and edges. 相似文献
13.
N/Kbe a Galois extension of number fields with finite Galois group G.We describe a new approach for constructing invariants of the G-module structure of the K groups of the ring of integers of N in the Grothendieck group of finitely generated projective Z[G]modules. In various cases we can relate these classes, and their function field counterparts, to the root number class of Fröhlich and Cassou-Noguès. 相似文献
14.
Piotr Je¸drzejewicz 《代数通讯》2013,41(4):1500-1508
Let A be a UFD of characteristic p > 0, let 𝒵 be a set of some eigenvectors of a derivation of A. We prove, under some additional assumptions, a necessary and sufficient condition for 𝒵 to be a p-basis of the minimal ring of constants containing 𝒵. The main preparatory result is the unique decomposition theorem with respect to a factor from a given subalgebra containing Ap. 相似文献
15.
有资格限制的指派问题的求解方法 总被引:3,自引:0,他引:3
在实际的指派工作中,常会遇到某个人有没有资格去承担某项工作的问题,因此,本建立了有资格限制的指派问题的数学模型。在此数学模型中,将效益矩阵转化为判定矩阵,由此给出了判定此种指派问题是否有解的方法;在有解的情况下,进一步将效益矩阵转化为求解矩阵,从而将有资格限制的指派问题化为传统的指派问题来求解。最后给出了一个数值例子来说明这样的处理方法是有效的。 相似文献
16.
17.
Nguyêñ Quoôć Thǎ;ńg 《代数通讯》2013,41(3):1097-1110
We present a unified approach to compute the number of connected components in the group of real points of adjoint almost simple real algebraic groups. 相似文献
18.
We study the nilpotency of the sums of all coefficients of some sorts of products of polynomials over reversible, IFP, and NI rings, and introduce an SCN ring as a generalization. We characterize SCN rings in relation with related ring properties, and also provide several useful properties and ring extensions of SCN rings. 相似文献
19.
Janusz Sokó? 《Journal of Mathematical Analysis and Applications》2008,344(2):869-875
We consider the classes of analytic functions introduced recently by K.I. Noor which are defined by conditions joining ideas of close-to-convex and of bounded boundary rotation functions. We investigate coefficients estimates and radii of convexity. 相似文献
20.
Rodney Y. Sharp 《Proceedings of the American Mathematical Society》2003,131(10):3009-3017
It is a well-known result of M. Brodmann that if is an ideal of a commutative Noetherian ring , then the set of associated primes of the -th power of is constant for all large . This paper is concerned with the following question: given a prime ideal of which is known to be in for all large integers , can one identify a term of the sequence beyond which will subsequently be an ever-present? This paper presents some results about convergence of sequences of sets of associated primes of graded components of finitely generated graded modules over a standard positively graded commutative Noetherian ring; those results are then applied to the above question.