Results 21 to 30 of about 2,031,080 (289)

Chebyshev Approximations by Least Squares Method

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2020
We consider the problem of linear approximation in the form of the minimization problem of the weighted Chebyshev norm, and that in the form of the minimization problem of the weighted Euclidean norm of the residual vector.
V.I. Zorkaltsev, E. V. Gubiy
doaj   +1 more source

GALS – Gradient Analysis by Least Squares [PDF]

open access: yesAnnales Geophysicae, 2008
We present a method, GALS (Gradient Analysis by Least Squares) for estimating the gradient of a physical field from multi-spacecraft observations.
M. Hamrin   +4 more
doaj   +1 more source

Differentially Private Ordinary Least Squares

open access: yesThe Journal of Privacy and Confidentiality, 2019
Linear regression is one of the most prevalent techniques in machine learning; however, it is also common to use linear regression for its explanatory capabilities rather than label prediction.
Or Sheffet
doaj   +1 more source

Non-parametric and least squares Langley plot methods [PDF]

open access: yesAtmospheric Measurement Techniques, 2016
Langley plots are used to calibrate sun radiometers primarily for the measurement of the aerosol component of the atmosphere that attenuates (scatters and absorbs) incoming direct solar radiation.
P. W. Kiedron, J. J. Michalsky
doaj   +1 more source

Moving least squares via orthogonal polynomials [PDF]

open access: yes, 2009
A method for moving least squares interpolation and differentiation is presented in the framework of orthogonal polynomials on discrete points. This yields a robust and efficient method which can avoid singularities and breakdowns in the moving least ...
Carley, Michael
core   +6 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

The performance of unweighted least squares and regularized unweighted least squares in estimating factor loadings in structural equation modeling [PDF]

open access: yesInternational Journal of Data and Network Science, 2023
In a confirmatory study, researchers are expected to employ the covariance-based structural equation modeling (CB-SEM). One of the key presumptions when utilizing CB-SEM is that the data is multivariate normal.
Nurul Raudhah Zulkifli   +2 more
doaj   +1 more source

Total Least Squares Registration of 3D Surfaces [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
Co-registration of point clouds of partially scanned objects is the first step of the 3D modeling workflow. The aim of coregistration is to merge the overlapping point clouds by estimating the spatial transformation parameters.
U. Aydar   +3 more
doaj   +1 more source

Least-squares inversion for density-matrix reconstruction [PDF]

open access: yes, 1997
We propose a method for reconstruction of the density matrix from measurable time-dependent (probability) distributions of physical quantities. The applicability of the method based on least-squares inversion is - compared with other methods - very ...
A. Zucchetti   +48 more
core   +2 more sources

On the Least Median Square Problem [PDF]

open access: yesDiscrete & Computational Geometry, 2004
We consider the exact and approximate computational complexity of the multivariate least median-of-squares (LMS) linear regression estimator. The LMS estimator is among the most widely used robust linear statistical estimators. Given a set of n points in ${\Bbb R}^d$ and a parameter k, the problem is equivalent to computing the narrowest slab bounded ...
Jeff Erickson 0001   +2 more
openaire   +1 more source

Home - About - Disclaimer - Privacy