Results 1 to 10 of about 619,717 (297)

Calibration-Based Mean Estimators under Stratified Median Ranked Set Sampling

open access: yesMathematics, 2023
Using auxiliary information, the calibration approach modifies the original design weights to enhance the mean estimates. This paper initially proposes two families of estimators based on an adaptation of the estimators presented by recent researchers ...
Usman Shahzad   +4 more
doaj   +4 more sources

Estimating Population Proportions by Means of Calibration Estimators [PDF]

open access: yesRevista Colombiana de Estadística, 2015
This paper considers the problem of estimating the population proportion of a categorical variable using the calibration framework. Different situations are explored according to the level of auxiliary information available and the theoretical properties
SERGIO MARTÍNEZ   +3 more
doaj   +6 more sources

Calibration Estimators with Different Types of Distance Measures Under Stratified Sampling in the Presence of Measurement Error

open access: yesAxioms
The calibration method is used in stratified random sampling in the presence of measurement error to achieve optimum strata weights for better precision.
Sat Gupta, Pidugu Trisandhya
doaj   +4 more sources

Innovative memory-type calibration estimators for better survey accuracy in stratified sampling [PDF]

open access: yesScientific Reports
Calibration methods play a vital role in improving the accuracy of parameter estimates by effectively integrating information from various data sources.
Kanwal Shafiq Minhas   +5 more
doaj   +2 more sources

Two models for linear comparative calibration [PDF]

open access: yesInternational Journal of Metrology and Quality Engineering, 2012
We consider the comparative calibration problem in the case when linear relationship is assumed between two considered measuring devices with possibly different units and precisions.
Wimmer G., Witkovský V.
doaj   +1 more source

A comparison of biomarker based incidence estimators. [PDF]

open access: yesPLoS ONE, 2009
BACKGROUND: Cross-sectional surveys utilizing biomarkers that test for recent infection provide a convenient and cost effective way to estimate HIV incidence. In particular, the BED assay has been developed for this purpose.
Thomas A McWalter, Alex Welte
doaj   +1 more source

Estimation of Coefficient of Variation Using Calibrated Estimators in Double Stratified Random Sampling

open access: yesMathematics, 2023
One of the most useful indicators of relative dispersion is the coefficient of variation. The characteristics of the coefficient of variation have contributed to its widespread use in most scientific and academic disciplines, with real life applications.
Usman Shahzad   +5 more
doaj   +1 more source

Classification of Event-Related Potentials with Regularized Spatiotemporal LCMV Beamforming

open access: yesApplied Sciences, 2022
The usability of EEG-based visual brain–computer interfaces (BCIs) based on event-related potentials (ERPs) benefits from reducing the calibration time before BCI operation. Linear decoding models, such as the spatiotemporal beamformer model, yield state-
Arne Van Den Kerchove   +3 more
doaj   +1 more source

Calibration Estimators of the Population Parameters Using Stratified Random Sample [PDF]

open access: yesالمجلة المصرية للسکـان وتنظيم الأسرة, 2004
One of the fundamental questions in sampling is how to use the complete auxiliary information in the estimating stag effectively. In sample surveys, recent advanced literature on estimation using auxiliary information can be classified into three main ...
Mounira Hussein
doaj   +1 more source

Statistical Inference for the Heteroscedastic Partially Linear Varying-Coefficient Errors-in-Variables Model with Missing Censoring Indicators

open access: yesDiscrete Dynamics in Nature and Society, 2021
In this paper, we focus on heteroscedastic partially linear varying-coefficient errors-in-variables models under right-censored data with censoring indicators missing at random.
Yuye Zou, Chengxin Wu
doaj   +1 more source

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