方差分量估计,variance component estimation
1)variance component estimation方差分量估计
1.A data processing method for the precision surveying of ballastless track high-speed railway is put forward:first, choosing the compatible points in the control network by quasi-stable adjustment, then, adjusting the control network with the adjustment model of indirect observation in which the Baarda gross errors detection and Helmertvariance component estimation are used.提出一种适合无碴轨道高速铁路精密工程测量的数据处理方法:先采用拟稳平差选择兼容的起算点,然后应用间接平差模型平差;在平差过程中,用Baarda粗差探测的方法逐个剔除粗差,再用Helmert方差分量估计方法合理地确定边、角的权比。
2.Thevariance component estimation to balance the stochastic models of the observations.应用方差分量估计来协调拟合推估模型中观测噪声和信号向量的随机模型,并分别从极大似然估计、MINQUE估计、赫尔默特方差分量估计三方面构建了拟合推估模型的方差分量解,最后利用新提出的理论与方法,对一幅实际的扫描地形图进行误差纠正,结果表明基于方差分量估计的拟合推估法能够提高扫描地形图的精度。
3.On the basis of Helmert s formula forvariance component estimation, a sequential algorithm for joint adjustment of various observations is put forward in this paper.在赫尔默特公式的基础上,推导了多类观测数据联合平差中方差分量估计的序贯算法,它区别于以前文献中使各类观测量所对应的验后单位权方差整体趋于一致的做法,而采用逐类(次)平差法,在每次平差后进行方差分量估计,依次使各类观测量的验后单位权方差趋于相等。
英文短句/例句
1.Variance Component Esti mation with Gross Errors or Systematic Errors含有粗差或系统误差的方差分量估计
2.Analysis of GPS Baseline Precision and Variance Component Estimation of GPS Control Network;GPS基线精度分析及控制网的方差分量估计研究
3.Variance Component Estimation of Helmert Type-Based Dynamic Kalman Filtering基于严密Helmert方差分量估计的动态Kalman滤波
4.Study of Helmert Variance Component Estimation in Tunnel Run-through Control Traverse DifferenceHelmert方差分量估计在隧道贯通中控制导线平差的研究
5.Estimating the Variability of Estimated Variance Components for Generalizability Theory基于概化理论的方差分量变异量估计
6.Bayesian estimation of non-information variance and covariance components in the nonlinear model非线性模型中无信息方差和协方差分量Bayes估计
7.The Estimators and Tests of Variance Components in Longitudinal Data Model;纵向数据模型方差分量的估计和检验
8.Estimates of Variance Components in Linear Mixed Models with Random Effects线性混合效应模型中方差分量的估计
9.Estimation of Variance Components in Multivariate Mixed Linear Models with Two Variance Components含有两个方差分量的多元混合效应模型方差分量矩阵的估计
10.New Estimation of Variance Components in Two-way Classification Model with Random Effects双向分类随机效应模型中方差分量的估计
11.The modification of intervals estimation of variance components in nested model随机套分类模型中方差分量区间估计的改进
12.Admissibility of Regression Coefficient in Variance Components Models(Ⅱ)方差分量模型中回归系数估计的可容许性(Ⅱ)
13.Estimation of the Variance for the Partial Sums of Some Mixing Random Variable Sequences;几类混合随机变量序列部分和的方差估计
14.On Empirical Bayes Estimation of Variance Components in Unbalanced Random Effects Models非平衡随机效应模型中方差分量的经验Bayes估计
15.The Minimax Invariant Quadratie Unbiased Estimation of Variance Componet方差分量的极小极大不变二次无偏估计
16.Recent Developments in Econometric Methods of Income Inequality Study;一种新的收入差距研究的计量方法——基于分布函数的半参数化估计
17.Bias of the Estimator Double Sampling for Multiple Linear Regression and Estimate of Mean Square Errors of this Estimator;双重多元线性回归估计量的偏差和均方误差的估计量
18.squared error asymptotically efficient estimator平方误差渐近有效估计量
相关短句/例句
variance components estimation方差分量估计
1.Adjusting triangulateration nets using characteristic roots method in Helmertvariance components estimation;边角网赫尔默特方差分量估计的特征根法
2.Influence ofvariance components estimation on the adjustment results of GPS network;方差分量估计对GPS网平差结果的影响
3.At the same time it studies on the estimation methods by means ofvariance components estimation and non-negative estimation on the variance-covariance matrix of dissimilar time and different area so as to assess the quality of baseline observation.指出根据观测数据对随机模型验后估计的意义,介绍随机模型验后估计的理论和方法及GPS基线网平差的数学模型,研究用方差分量估计与非负估计方法对不同时段不同分区的方差协方差矩阵进行估计,以评定基线观测值的质量,同时研究它对参数估计的影响,算例的计算结果表明,方差分量估计正确与否对GPS网平差结果的影响可达6mm。
3)variance component estimation of HelmertHelmert方差分量估计
1.The method,variance component estimation of Helmert type, is often used to solve the problem that the weight ratio of different kinds of observations or different precision observations is incorrect.Helmert方差分量估计是合理确定不同类观测值或不同种精度观测值权比的常用方法。
4)Helmert variance components estimationHelmert方差分量估计
1.Equivalence of rigorous formula to simplified formula of helmert variance components estimation;Helmert方差分量估计严密公式与简化公式等价性的证明
5)bayes estimation of variance componentsBayes方差分量估计
6)variance and covariance components estimation方差和协方差分量估计
延伸阅读
方差估计值分子式：CAS号：性质：由样本测定值计算的方差S2，称为样本方差，S2是总体方差σ2的无偏估计值。因此，S2又称为方差估计值或估计方差。S和σ分别为样品测定值的标准差和样本总体呈正态分布的标准差。
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