Results 31 to 40 of about 52,118 (271)

Least-Squares Estimators of Drift Parameter for Discretely Observed Fractional Ornstein–Uhlenbeck Processes

Mathematics, 2020
We introduce three new estimators of the drift parameter of a fractional Ornstein–Uhlenbeck process. These estimators are based on modifications of the least-squares procedure utilizing the explicit formula for the process and covariance structure of a ...
Pavel Kříž, Leszek Szała
doaj   +1 more source

On Accuracy of Calibration Estimators Supported by Auxiliary Variables from Past Periods Based on Simulation Analyses

Acta Universitatis Lodziensis. Folia Oeconomica, 2017
In sample surveys there is often a need to estimate not only population characteristics, but subpopulation characteristics as well. We consider the problem of estimating the total value in domains (subpopulations).
Tomasz Stachurski, Tomasz Żądło
doaj   +1 more source

Calibration estimation in dual-frame surveys [PDF]

Statistical Methods & Applications, 2015
33 ...
RANALLI, Maria Giovanna, Arcos, Antonio, Rueda, María Del Mar, TEODORO, ANNALISA   +3 more
openaire   +5 more sources

Effect of Calibration for Tissue Differentiation Between Healthy and Neoplasm Lung Using Minimally Invasive Electrical Impedance Spectroscopy

IEEE Access, 2022
This study proposes a calibration method and analyses the effect of this calibration in lung measures, using minimally invasive electrical impedance spectroscopy with the 3-electrode method, for tissue differentiation between healthy and neoplasm lung ...
Georgina Company-Se, Lexa Nescolarde, Virginia Pajares, Alfons Torrego, Pere J. Riu, Javier Rosell, Ramon Bragos   +6 more
doaj   +1 more source

Regularization independent of the noise level: an analysis of quasi-optimality

, 2007
The quasi-optimality criterion chooses the regularization parameter in inverse problems without taking into account the noise level. This rule works remarkably well in practice, although Bakushinskii has shown that there are always counterexamples with ...
Bauer F, Cont R, Egger H, Engl H, Frank Bauer, Kaipio J, Markus Reiß, Tikhonov A, Tikhonov A, Wasserman L   +9 more
core   +2 more sources

Regression calibration for Cox regression under heteroscedastic measurement error - Determining risk factors of cardiovascular diseases from error-prone nutritional replication data [PDF]

, 2003
For instance nutritional data are often subject to severe measurement error, and an adequate adjustment of the estimators is indispensable to avoid deceptive conclusions.
Augustin, Thomas, Döring, A., Rummel, D.   +2 more
core   +2 more sources

Estimating radiocarbon calibration curves

Bayesian Analysis, 2008
In addition to being crucial to the establishment of archaeological chronologies, radiocarbon dating is vital to the establishment of time lines for many Holocene and late Pleistocene palaeoclimatic studies and palaeoenvironmental re- constructions. The calibration curves necessary to map radiocarbon to calendar ages were originally estimated using ...
Blackwell, P. G., Buck, C. E.
openaire   +2 more sources

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

Axioms
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   +1 more source

Combining Viral Genetics and Statistical Modeling to Improve HIV-1 Time-of-infection Estimation towards Enhanced Vaccine Efficacy Assessment

Viruses, 2019
Knowledge of the time of HIV-1 infection and the multiplicity of viruses that establish HIV-1 infection is crucial for the in-depth analysis of clinical prevention efficacy trial outcomes.
Raabya Rossenkhan, Morgane Rolland, Jan P.L. Labuschagne, Roux-Cil Ferreira, Craig A. Magaret, Lindsay N. Carpp, Frederick A. Matsen IV, Yunda Huang, Erika E. Rudnicki, Yuanyuan Zhang, Nonkululeko Ndabambi, Murray Logan, Ted Holzman, Melissa-Rose Abrahams, Colin Anthony, Sodsai Tovanabutra, Christopher Warth, Gordon Botha, David Matten, Sorachai Nitayaphan, Hannah Kibuuka, Fred K. Sawe, Denis Chopera, Leigh Anne Eller, Simon Travers, Merlin L. Robb, Carolyn Williamson, Peter B. Gilbert, Paul T. Edlefsen   +28 more
doaj   +1 more source

Calibration Error Estimation Using Fuzzy Binning

, 2023
11 pages, 4 figures, Accepted at NAFIPS ...
Bihani, Geetanjali, Rayz, Julia Taylor
openaire   +2 more sources