Results 21 to 30 of about 1,725,137 (297)

ACCURACY ASSESSMENT OF HEIGHTS OBTAINED FROM TOTAL STATION AND LEVEL INSTRUMENT USING TOTAL LEAST SQUARES AND ORDINARY LEAST SQUARES METHODS

open access: yesGeoplanning: Journal of Geomatics and Planning, 2016
Spirit levelling has been the traditional means of determining Reduced Levels (RL’s) of points by most surveyors.  The assertion that the level instrument is the best instrument for determining elevations of points needs to be reviewed; this is because ...
Richard Fiifi Annan   +3 more
doaj   +1 more source

Stability indicating analysis of bisacodyl by partial least squares regression, spectral residual augmented classical least squares and support vector regression chemometric models: A comparative study

open access: yesBulletin of Faculty of Pharmacy Cairo University, 2011
Partial least squares regression (PLSR), spectral residual augmented classical least squares (SRACLS) and support vector regression (SVR) are three different chemometric models.
Ibrahim A. Naguib
doaj   +1 more source

Reconciling alternate methods for the determination of charge distributions: A probabilistic approach to high-dimensional least-squares approximations [PDF]

open access: yes, 2010
We propose extensions and improvements of the statistical analysis of distributed multipoles (SADM) algorithm put forth by Chipot et al. in [6] for the derivation of distributed atomic multipoles from the quantum-mechanical electrostatic potential.
Champagnat, Nicolas   +2 more
core   +6 more sources

Least Squares Moving-Window Spectral Analysis [PDF]

open access: yesApplied Spectroscopy, 2017
Least squares regression is proposed as a moving-windows method for analysis of a series of spectra acquired as a function of external perturbation. The least squares moving-window (LSMW) method can be considered an extended form of the Savitzky–Golay differentiation for nonuniform perturbation spacing.
openaire   +2 more sources

Analysis of moving least squares approximation revisited

open access: yes, 2015
In this article the error estimation of the moving least squares approximation is provided for functions in fractional order Sobolev spaces. The analysis presented in this paper extends the previous estimations and explains some unnoticed mathematical ...
Mirzaei, Davoud
core   +1 more source

Methodology and theory for partial least squares applied to functional data [PDF]

open access: yes, 2012
The partial least squares procedure was originally developed to estimate the slope parameter in multivariate parametric models. More recently it has gained popularity in the functional data literature.
Delaigle, Aurore, Hall, Peter
core   +1 more source

Improved Convergence Analysis of Gauss-Newton-Secant Method for Solving Nonlinear Least Squares Problems

open access: yesMathematics, 2019
We study an iterative differential-difference method for solving nonlinear least squares problems, which uses, instead of the Jacobian, the sum of derivative of differentiable parts of operator and divided difference of nondifferentiable parts. Moreover,
Ioannis Argyros   +2 more
doaj   +1 more source

Least-squares deconvolution based analysis of stellar spectra

open access: yes, 2013
In recent years, astronomical photometry has been revolutionised by space missions such as MOST, CoRoT and Kepler. However, despite this progress, high-quality spectroscopy is still required as well.
Tkachenko, A.   +2 more
core   +1 more source

E-Government Effectiveness and Efficiency in EU-28 and COVID-19

open access: yesCentral European Public Administration Review, 2021
The task of every government, especially during the Covid-19 pandemic, is to provide services and goods for citizens and to maintain economic order. Therefore, the combination of legislation, the judiciary and administration is inevitable.
Sabina Hodžić   +2 more
doaj   +1 more source

Distributed Recursive Least-Squares: Stability and Performance Analysis

open access: yes, 2011
The recursive least-squares (RLS) algorithm has well-documented merits for reducing complexity and storage requirements, when it comes to online estimation of stationary signals as well as for tracking slowly-varying nonstationary processes.
Giannakis, Georgios B., Mateos, Gonzalo
core   +1 more source

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