随机样本

简单随机样本平方平均数的分布

On the distribution of root - mean - square value of simple random sample

总体分成阶层后由各阶层抽选出来的随机样本。

The population is divided into strata and a random sample is taken from each stratum .

针对粒子滤波容易出现粒子退化的问题，采用Kalman滤波进行重点采样，提高随机样本的精度，进而提高粒子滤波的解算精度。

Important sampling with Kalman filtering can optimize particles for degeneracy of the particle occurs in particle filter .

结果表明，在104份随机样本中，PCR扩增出的delta模块具有高度多态性。

The results showed that delta block had polymorphism in 104 samples without sibship of the Han people from Zhejiang province .

通过观察它们群体的分离和随机样本的工农艺性状表现及其RAPD标记的遗传多样性来评价组合优劣。

Their population separation , agronomic characters and the genetic diversity of RAPD were studied to value the cross combinations .

自举法是在1个容量为n的原始样本中重复抽取一系列容量也是n的随机样本，并保证每次抽样中每一样本观察值被抽取的概率都是1/n（复置抽样）。

Bootstrapping repeatedly draws random samples , each with size n , from the original sample of size n , and makes the probability 1 / n for each original variate in each sampling with replacement .

这种方法直接根据系统的可靠性网络，建立各最小路失效时间的随机样本，并获得系统的失效时间样本，经过N次仿真后进一步求出系统的指标。

The method sets up the random samples of the failure time of every minimal path and acquires the sample of the failure time of system according to the reliability network of system . The reliability index of system may be calculated through N simulations .

根据秦沈客运专线高速试验段轨检车资料，采用ARMA时间序列模型模拟了高速铁路轨道不平顺随机样本函数；

With the data obtained from track geometry inspection car on Qinhuangdao-Shenyang special line for passenger transport and ARMA time series model , the sample function of high-speed railway track random geometric irregularity are simulated .

本文讨论了基于一类有代表性的非概率测度Sugeno测度和一类重要的非实随机样本模糊样本的统计学习理论。

In this paper , we discuss some SLT problems based on a class of representative non-probability measure Sugeno measure and a class of important non-random samples fuzzy samples .

分别对自由布朗桥过程和有约束布朗桥过程，自由Langevin桥过程和有约束Langevin桥过程产生的随机样本进行研究，使用数值仿真方法分析了基本随机变量的统计特性。

The statistical characteristics of basic random variables constructed from free Brownian bridge process and bounded Brownian bridge process , and from free Langevin bridge process and bounded Langevin bridge process were investigated in detail from the numerical simulation , respectively .

非简单随机样本下导弹平均命中率的检验与估计

Test and Estimation of Missiles ′ Mean Hit Ratio Unsimple Random Samples

基于粗糙随机样本学习理论的关键定理

Key Theorem of Learning Theory Based on Rough Random Samples

基于复随机样本的结构风险最小化原则

Structural Risk Minimization Principle Based on Complex Random Samples

给出并证明了基于粗糙随机样本的学习理论的关键定理；

The key theorem of rough random learning theory is given and proved ;

统计结构中随机样本和的分布

Random Sampling Sum Distribution in Statistics Structure

本文讨论了模糊复随机样本的统计学习理论。

In this paper , statistical learning theory based on fuzzy complex random samples is discussed .

最后证明基于双重随机样本的统计学习理论的关键定理并讨论学习过程一致收敛速度的界。

This paper mainly investigates the bounds on the rate of uniform convergence of the fuzzy learning processes .

在第二阶段中，结果是来自伯努利分配与这次获胜率的一个随机样本。

In the second stage , the outcome is a random sample from a Bernoulli distribution with this winning probability .

而不重复抽样下的样本同分布但不独立，因而不是简单随机样本。

While samples under non-repetition sampling are identically distributed but not independent , so they are not simple random samples .

给出了常见的统计结构中随机样本和的分布的求解方法。

In this paper , the author arrives at the method keying to random sampling sum distribution in normal statistics structure .

对我国北方小豆地方品种资源群体中随机样本的农艺性状遗传参数进行了估计。

The genetic parameters of agronomic characters were estimated from random samples of local variety population of Adzuki bean from North China .

而这些案例不是随机样本，所以那些数据无法反映现实，无论那些数据是否对我们有利。

They are not a random sample , so those numbers do not represent reality whether or not those numbers serve our interests .

目前国内进行的调查大都采用复杂抽样方案，但在分析时却常常采用只适用于简单随机样本的一般方法。

The problem of using ordinary statistical methods basically for simple random samples in analyzing data from complex surveys for non simple random samples was discussed .

我反对将那些案例研究处理成数字，因为只有我们所掌握的这些案例是随机样本时，那些数字才有效。

I am against processing those case studies into numbers , because those numbers would only be valid if the case studies we have are a random sample .

粒子滤波是从概率统计的角度出发，使用一个具有相应权值的随机样本集合来表示需要的后验概率密度。

Particle filtering is from the probability and statistic point of view , using a collection of random samples with corresponding value to express the posterior probability density .

捕获再捕获与捕获移出研究是数理统计的一个重要方向，它研究如何利用随机样本估计有限群体的总体数目。

The field of capture-recapture and removal is an important direction of mathematical statistics , which studies the estimation of the sizes of finite populations from incomplete random samples .

为揭示二化螟幼虫空间格局特征并阐明经典格局分析的局限性与地统计分析的优越性，从2个原始样本出发，另构建了一系列格栅样本、随机样本和顺序样本并进行了比较研究。

Two original samples of Chilo suppressalis and their grid , random and sequence samples were analyzed by classical method and geostatistics to characterize the spatial distribution pattern of C.

然而，该理论是基于概率测度和实随机样本的，它难以处理现实世界中客观存在的非概率测度和非实随机样本统计学习问题。

However , the theory based on probability measure and fuzzy samples hardly handles statistical learning problems in real world such as non-probability measure and non-real random variables problems .

为解决决策网络计划中随机样本空间变化而产生的模型表达上的困难，提出经拓展能够描述多个样本空间的决策单元结构。

To solve the expression difficulties resulting from variety of random sample spaces in decision network planning , an expanded decision unit structure including several sample spaces was presented .

趋势研究是在不同时间内对研究总体的纵向研究，通常要从总体中取样，再测量随机样本。（随机取样）

A trend study is a longitudinal study in which a general population is studies over time . Usually , the population is sampled , and random samples are measured .