Results 21 to 30 of about 536,991 (288)

Weighted-Average Least Squares (WALS): Confidence and Prediction Intervals [PDF]

open access: yesComputational Economics, 2021
AbstractWe consider inference for linear regression models estimated by weighted-average least squares (WALS), a frequentist model averaging approach with a Bayesian flavor. We propose a new simulation method that yields re-centered confidence and prediction intervals by exploiting the bias-corrected posterior mean as a frequentist estimator of a ...
De Luca G., Magnus J., Peracchi F.
openaire   +5 more sources

Communication efficient distributed weighted non-linear least squares estimation

open access: yesEURASIP Journal on Advances in Signal Processing, 2018
The paper addresses design and analysis of communication-efficient distributed algorithms for solving weighted non-linear least squares problems in multi-agent networks.
Anit Kumar Sahu   +3 more
doaj   +1 more source

Application of the Iterated Weighted Least-Squares Fit to counting experiments [PDF]

open access: yes, 2019
Least-squares fits are an important tool in many data analysis applications. In this paper, we review theoretical results, which are relevant for their application to data from counting experiments.
Dembinski, Hans   +2 more
core   +3 more sources

Estimating Detection Limits in Chromatography from Calibration Data: Ordinary Least Squares Regression vs. Weighted Least Squares

open access: yesSeparations, 2018
It is necessary to determine the limit of detection when validating any analytical method. For methods with a linear response, a simple and low labor-consuming procedure is to use the linear regression parameters obtained in the calibration to estimate ...
Juan M. Sanchez
doaj   +1 more source

Boosted optimal weighted least-squares [PDF]

open access: yesMathematics of Computation, 2022
This paper is concerned with the approximation of a function u u in a given subspace V m V_m of dimension m m from evaluations of the function at n n suitably chosen points. The aim is to construct an approximation of u u in V
Haberstich, Cécile   +2 more
openaire   +5 more sources

PERFORMING IMPROVED TWO-STEP CAMERA CALIBRATION WITH WEIGHTED TOTAL LEAST-SQUARES [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
In order to improve the Tsai's two-step camera calibration method, we present a camera model which accounts for major sources of lens distortion, namely: radial, decentering, and thin prism distortions.
J. Lu
doaj   +1 more source

Greedy Sensor Selection for Weighted Linear Least Squares Estimation Under Correlated Noise

open access: yesIEEE Access, 2022
Optimization of sensor selection has been studied to monitor complex and large-scale systems with data-driven linear reduced-order modeling. An algorithm for greedy sensor selection is presented under the assumption of correlated noise in the sensor ...
Keigo Yamada   +3 more
doaj   +1 more source

A Monte Carlo Comparison of Regression Estimators When the Error Distribution is Long-Tailed Symmetric [PDF]

open access: yes, 2009
The performances of the ordinary least squares (OLS), modified maximum likelihood (MML), least absolute deviations (LAD), Winsorized least squares (WIN), trimmed least squares (TLS), Theil’s (Theil) and weighted Theil’s (Weighted Theil) estimators are ...
Mutan, Oya Can, Şenoğlu, Birdal
core   +2 more sources

2-D iteratively reweighted least squares lattice algorithm and its application to defect detection in textured images [PDF]

open access: yes, 2006
In this paper, a 2-D iteratively reweighted least squares lattice algorithm, which is robust to the outliers, is introduced and is applied to defect detection problem in textured images.
Ercil, Aytul   +7 more
core   +2 more sources

Recursive weighted least squares estimation algorithm based on minimum model error principle

open access: yesDefence Technology, 2021
Kalman filter is commonly used in data filtering and parameters estimation of nonlinear system, such as projectile's trajectory estimation and control. While there is a drawback that the prior error covariance matrix and filter parameters are difficult ...
Xiaoyun Lei, Zhian Zhang
doaj   +1 more source

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