搜索结果: 1-15 共查到“variance components”相关记录16条 . 查询时间(0.065 秒)
Variance components,heritability estimates,and breeding values for performance test traits in Old Kladruber horses
harness horse genetic parameters performance test genetic resource
2016/9/1
The Old Kladruber horse is an important Czech genetic resource. In the current study, two categories of traits were evaluated – the first, a numerical score for Type and Gender Expression and the seco...
Variance Components and Genetic Parameters Estimated for Fat and Protein Content in Individual Months of Lactation: The Case of Tsigai Sheep
Sheep Milk Composition Test Day Model Variance Ratios Heritability Genetic Correlations
2016/5/19
The objective of this study was to assess variance components and genetic parameters for fat and protein content in Tsigai sheep using multivariate animal models in which fat and protein content in in...
VARIANCE COMPONENTS AND GENERALIZED SOBOL' INDICES
VARIANCE COMPONENTS GENERALIZED SOBOL' INDICES
2015/8/21
This paper introduces generalized Sobol' indices, compares strategies for their estimation, and makes a systematic search for ecient estimators. Of particular interest are contrasts,
sums of squares...
Variance Components and Genetic Parameters for Milk Production and Lactation Pattern in an Ethiopian Multibreed Dairy Cattle Population
Genetic Parameters Milk Yield Multibreed Tropics
2016/5/12
The objective of this study was to estimate variance components and genetic parameters for lactation milk yield (LY), lactation length (LL), average milk yield per day (YD), initial milk yield (IY), p...
Genetic (Co)variance Components for Body Weight and Body Measurements in Makooei Sheep
Body Weight Body Measurement Sheep Animal Model REML Heritability
2016/5/6
The aim of this paper was to estimate genetic parameters for body weight and five body measurements for an experimental population of Iranian Makooei sheep maintained at the Makooei Sheep Breeding Sta...
Fixed Effects and Variance Components Estimation in Three-Level Meta-Analysis
multilevel models meta-analysis random effects
2012/10/30
Meta-analytic methods have been widely applied to education, medicine, and the social sciences. Much of meta-analytic data are hierarchically structured since effect size estimates are nested within s...
Reconsidering the asymptotic null distribution of likelihood ratio tests for genetic linkage in multivariate variance components models
asymptotic null distribution likelihood ratio test mixing probabilities multivariate linkage
2010/4/30
Accurate knowledge of the null distribution of hypothesis tests is important for valid application of the tests. In previous papers and software, the asymptotic null distribution of likelihood ratio t...
A Multivariate Variance Components Model for Analysis of Covariance in Designed Experiments
Adjusted mean blocking factor conditionalmodel orthogonal design randomized blocks design.itute of Mathematical Statistics
2010/3/9
Traditional methods for covariate adjustment of treatment
means in designed experiments are inherently conditional on the ob-
served covariate values. In order to develop a coherent general method-
...
Estimating functions of variance components is
considered. The problem is to find an estimator, the variance of
which changes as little as possible when the kurtosis of the
underlying distribution ...
Admissibility of limits of the unique locally best linear estimators with application to variance components models
Admissibility of limits the unique locally best linear estimators
2009/9/23
The paper gives a sufkient condition for the limit of
a sequence of the unique best linear estimators to be admissible. For
commutative variance components models a complete characterization
of hrn...
Variance components admissible estimation from some unbalanced data: formulae for the nested design (1)
Variance components admissible estimation unbalanced data
2009/9/23
Variance components admissible estimation from some unbalanced data: formulae for the nested design (1)。
The minimal complete class for the vector of variance components
The minimal complete class the vector of variance components
2009/9/23
The minimal complete class for the vector of variance components。
Admissible estimators of variance components in normal mixed models
Admissible estimators variance components normal mixed models
2009/9/23
A sulficient condition for an invariant quadratic
estimator of a linear function of the vector of variance components to
be admissible under the mean square &or among all translation
invariant esti...
A Default Conjugate Prior for Variance Components in Generalized Linear Mixed Models(Comment on Article by Browne and Draper)
Choice of prior hierarchical models noninformative priors random effects
2009/9/21
For a scalar random-eect variance, Browne and Draper (2005) have found that the uniform prior works well. It would be valuable to know more about the vector case, in which a second-stage prior on the ...
用R法估计方差组分的原理、方法和应用Theory, Method and Application of Method R on Estimation of (Co)Variance Components
R法 方差组分 Method R (co)variance components
2007/12/5
综述了R法估计方差组分的原理、方法和应用，目的是使该方法能够得到合理应用。R法是通过计算全数据集对亚数据集随机效应的回归因子（R）来估计方差组分的。利用一种基于一个变换矩阵的多变量迭代算法，结合先决条件的共扼梯度法求解混合模型方程组使R法的计算效率大为改善。R法的主要优点是计算成本低，同时可以得到方差组分估值的抽样误差和近似置信区间。其缺点是对于同样的数据，R法较其他方法的抽样误差大，而且在小样本...