查询词典 random dependence

We give several sufficient conditions of NA and NSD properties of random variables, compare the closeness of distribution functions of order statistics between NA and independent rv's, investigate properties of NSD defined by supermodular functions, study the dependence structure of stationary Markov process and order statistics and their spacings from two samples, establish stochastic comparisons of order statistics of heterogeneous rv's in the hazard rate and the reversed hazard rate orders, and give the first analytic proof of the closure property of the up shifted likelihood ratio order under convolution.

给出判定一组随机变量NA性质的几个充分条件，并给出NA和独立随机变量的次序统计量之间"贴近性"的比较，系统地研究基于特殊函数类所定义的NSD负相依概念，给出一些判别NSD性质的结构定理和一些有用概率不等式。系统研究平稳马氏过程的相依结构。研究两样本次序统计量及其问题隔的相依结构。在失效率、反向失效率序和似然序意义下给出非齐次随机变量次序统计量的比较。给出上漂移似然序卷积封闭性的第一个解析证明。

To describe the asymptotic behavior of certain time series or random fields,many ways of modeling the weak dependence have already been work out.

为了描述某些时间序列和随机场的渐近行为，许多作者引入了随机变量的相依性概念，其中最流行的就是混合概念。

This article's emphasis studies the random variable using the copula function to describe tail dependence.

本文的重点就是应用copula函数来研究随机变量的尾部相关性的问题。

In this paper, we obtain a new result in view of the definition of the dependence of two dimensional discrete random variable, and give applications about it.

在二维离散型随机变量独立性定义的基础上，得到二维离散型随机变量独立的一个新的判断定理，并给出相关的应用。

Therefore using the degree of relativity or the linear correlation describe dependence of correlation during the random variable is not comprehensive.

因此仅用相关程度来描述随机变量间的相关关系都是不全面的。

The innovations of this paper are as follows:First, the paper has realized to study on the dependence relations between random variables based on copulas, an instrument which is used in this paper as an innovation, in terms of determining the nature and quantification, resorting to the descriptions of dependence properties and association strength and, by way of which, broke through the limitation of study with only depending on independence and linear dependence.

本文的创新点集中体现在三个方面：首先，以Copula为基础，通过对股票市场间的相关关系的强弱描述，从定性和定量两方面来实现对尾部相关性的研究，从而突(来源：7b9bA2bBC论文网www.abclunwen.com)破了目前依赖于独立和线性相关，这仅有的两类相依关系的局限。

According to the statistical meaning of random loading actions, the reliability model of a gear under frequent random loading actions is developed with the theory of order statistic. And the dependence of gear reliability on the frequency of loading actions is studied.

根据随机载荷作用的统计学意义，运用顺序统计量理论建立了随机载荷多次作用时的齿轮可靠性模型，并研究了齿轮可靠度随载荷作用次数的变化规律。

The vertex set denotes random variables at different times, and the directed edges denote causal dependence between the variables.

定义了线性条件互信息图，图中的结点表示时间序列不同时刻的随机变量，结点间的边表示随机变量之间存在的因果相依关系。

The method improves detection accuracy by setting window of dependence between states and increases the self-adjustability and becomes lustier by changing the probability into the fuzzy random variable value.

该方法通过运用状态转移依赖滑窗的设置提高了系统的检测精度，通过将状态的随机转移转变为模糊随机转移，提高了系统的鲁棒性和自适应性。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。