Results 11 to 20 of about 415,967 (312)

Genetic heterogeneity of residual variance - estimation of variance components using double hierarchical generalized linear models

open access: yesGenetics Selection Evolution, 2010
Background The sensitivity to microenvironmental changes varies among animals and may be under genetic control. It is essential to take this element into account when aiming at breeding robust farm animals.
Fikse Freddy   +4 more
doaj   +2 more sources

Investigating the Effects of k and Area Size on Variance Estimation of Multiple Pixel Areas Using a k-NN Technique for Forest Parameters

open access: yesRemote Sensing, 2021
Combining auxiliary variables and field inventory data of forest parameters using the model-based approach is frequently used to produce synthetic estimates for small areas.
Dylan Walshe   +3 more
doaj   +1 more source

Single Imputation Methods and Confidence Intervals for the Gini Index

open access: yesMathematics, 2021
The problem of missing data is a common feature in any study, and a single imputation method is often applied to deal with this problem. The first contribution of this paper is to analyse the empirical performance of some traditional single imputation ...
Encarnación Álvarez-Verdejo   +2 more
doaj   +1 more source

Methods of variance component estimation

open access: yesCzech Journal of Animal Science, 2006
Estimation of variance components is a method often used in population genetics and applied in animal breeding. Even experienced population geneticists nowadays feel lost if confronted with the huge set of different methods of variance component ...
D. Rasch, O. Mašata
doaj   +1 more source

Research on the Necessity of Lie Group Strapdown Inertial Integrated Navigation Error Model Based on Euler Angle

open access: yesSensors, 2022
In response to the lack of specific demonstration and analysis of the research on the necessity of the Lie group strapdown inertial integrated navigation error model based on the Euler angle, two common integrated navigation systems, strapdown inertial ...
Leiyuan Qian   +3 more
doaj   +1 more source

Asymptotic variances of subspace estimates [PDF]

open access: yesProceedings of the 40th IEEE Conference on Decision and Control (Cat. No.01CH37228), 2002
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
CHIUSO, ALESSANDRO, PICCI, GIORGIO
openaire   +3 more sources

Variance Estimation Using Randomized Response Technique

open access: yesRevstat Statistical Journal, 2020
Variance estimation is a well-studied topic in survey sampling but not much work has been done in this area in the context of Randomized Response Technique (RRT) models.
Sat Gupta   +2 more
doaj   +1 more source

Maintaining Precision in Survey Estimates while Adjusting for Conditional Bias at the Subnational Level through Calibration Weighting

open access: yesSurvey Research Methods, 2017
Calibration weighting improves inference by adjusting for observed differences between the realized sample and the population. Unfortunately, a commonly-used linearization-based variance estimator often does not account for the increased efficiency ...
Bonnie E Shook-Sa   +7 more
doaj   +1 more source

Estimation of Error Variance in Regularized Regression Models via Adaptive Lasso

open access: yesMathematics, 2022
Estimation of error variance in a regression model is a fundamental problem in statistical modeling and inference. In high-dimensional linear models, variance estimation is a difficult problem, due to the issue of model selection.
Xin Wang, Lingchen Kong, Liqun Wang
doaj   +1 more source

Design-Based Approach for Analysing Survey Data in Veterinary Research

open access: yesVeterinary Sciences, 2021
Sample surveys are an essential approach used in veterinary research and investigation. A sample obtained from a well-designed sampling process along with robust data analysis can provide valuable insight into the attributes of the target population. Two
D. Aaron Yang, Richard A. Laven
doaj   +1 more source

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