Results 1 to 10 of about 3,154 (94)

Applying Monte Carlo Method for Straight-Line Model Sensor Calibration [PDF]

open access: yesSensors
Sensors are used in measurement systems to enable estimation of physical parameters. Their calibration is an essential requirement and to perform the overall system/sensor calibration, its input is changed while the output is measured. Parameters from an
Pedro M. Ramos, Fernando M. Janeiro
doaj   +2 more sources

Bartlett and Bartlett-type corrections in heteroscedastic symmetric nonlinear regression models [PDF]

open access: yesAnais da Academia Brasileira de Ciências, 2022
This paper provides general expressions for Bartlett and Bartlett-type correction factors for the likelihood ratio and gradient statistics to test the dispersion parameter vector in heteroscedastic symmetric nonlinear models.
MARIANA C. ARAÚJO   +2 more
doaj   +1 more source

D-optimal designs of experiments for trigonometric regression on interval with heteroscedastic observations

open access: yesЖурнал Белорусского государственного университета: Математика, информатика, 2020
In article the problem of construction continuous (number of observations is not fixed) D-optimal designs of experiments for trigonometric regression in a case when variance of errors of observations depend on a point in which is made is investigated ...
Valery P. Kirlitsa
doaj   +1 more source

Correlation Based Ridge Parameters in Ridge Regression with Heteroscedastic Errors and Outliers [PDF]

open access: yesJournal of Statistical Theory and Applications (JSTA), 2015
This paper introduces some new estimators for estimating ridge parameter, based on correlation between response and regressor variables for ridge regression analysis.
A.V. Dorugade
doaj   +1 more source

Corrected score estimators in linear multivariate multiple regression models with heteroscedastic measurement errors [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2018
In this study, the knowledge of estimation theory based on the corrected score (CS) approach is extended in a linear multivariate multiple regression model with heteroscedastic measurement errors (HMEs) and an unknown HME variance.
Wannaporn Junthopas   +2 more
doaj   +1 more source

D-optimal experimental designs for linear multiple regression under heteroscedastic observations

open access: yesЖурнал Белорусского государственного университета: Математика, информатика, 2020
The problem of construction of «continuous» (number of observations is not fixed) and «exact» (number of observations is fixed) D-optimal experimental designs for linear multiple regression in the case when variance of errors of observations depends on ...
Valery P. Kirlitsa
doaj   +1 more source

Deformation Analysis Using B-Spline Surface with Correlated Terrestrial Laser Scanner Observations—A Bridge Under Load

open access: yesRemote Sensing, 2020
The choice of an appropriate metric is mandatory to perform deformation analysis between two point clouds (PC)—the distance has to be trustworthy and, simultaneously, robust against measurement noise, which may be correlated and heteroscedastic ...
Gaël Kermarrec   +2 more
doaj   +1 more source

Forecasting emergency department arrivals using INGARCH models

open access: yesHealth Economics Review, 2023
Background Forecasting patient arrivals to hospital emergency departments is critical to dealing with surges and to efficient planning, management and functioning of hospital emerency departments.
Juan C. Reboredo   +3 more
doaj   +1 more source

Autoregressive Models with Time-Dependent Coefficients—A Comparison between Several Approaches

open access: yesStats, 2022
Autoregressive-moving average (ARMA) models with time-dependent (td) coefficients and marginally heteroscedastic innovations provide a natural alternative to stationary ARMA models. Several theories have been developed in the last 25 years for parametric
Rajae Azrak, Guy Mélard
doaj   +1 more source

Monitoring Parameter Change for Time Series Models of Counts Based on Minimum Density Power Divergence Estimator

open access: yesEntropy, 2020
In this study, we consider an online monitoring procedure to detect a parameter change for integer-valued generalized autoregressive heteroscedastic (INGARCH) models whose conditional density of present observations over past information follows one ...
Sangyeol Lee, Dongwon Kim
doaj   +1 more source

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