Results 21 to 30 of about 2,028,925 (265)

Generalized Least Squares and Weighted Least Squares Estimation Methods for Distributional Parameters

open access: yesRevstat Statistical Journal, 2015
Regression procedures are often used for estimating distributional parameters because of their computational simplicity and useful graphical presentation. However, the resulting regression model may have heteroscedasticity and/or correction problems and
Yeliz Mert Kantar
doaj   +1 more source

Penalized partial least squares for pleiotropy

open access: yesBMC Bioinformatics, 2021
Background The increasing number of genome-wide association studies (GWAS) has revealed several loci that are associated to multiple distinct phenotypes, suggesting the existence of pleiotropic effects.
Camilo Broc   +2 more
doaj   +1 more source

Least squares data fitting

open access: yesCiencias Marinas, 2002
 It is desired to represent, as good as possible, a series of data by means of certain functions with free parameters. "As good as possible" means that these parameters ara chosen so that the residuals, the difference between data and fitting functions,
P Ripa
doaj   +1 more source

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

Comparison between total least squares and ordinary least squares in obtaining the linear relationship between stable water isotopes

open access: yesGeoscience Letters, 2022
The linear relationship between two stable water isotopes (δD and δ18O) has been used to examine the physical processes and movements or changes of three water phases (water vapor, liquid water and ice), including deuterium excess.
Jeonghoon Lee   +3 more
doaj   +1 more source

Total Least Squares Spline Approximation

open access: yesMathematics, 2019
Spline approximation, using both values y i and x i as observations, is of vital importance for engineering geodesy, e.g., for approximation of profiles measured with terrestrial laser scanners, because it enables the consideration of
Frank Neitzel   +2 more
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

Götterdämmerung over total least squares

open access: yesJournal of Geodetic Science, 2016
The traditional way of solving non-linear least squares (LS) problems in Geodesy includes a linearization of the functional model and iterative solution of a nonlinear equation system.
Malissiovas G., Neitzel F., Petrovic S.
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

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

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