Results 11 to 20 of about 547,462 (296)

Moving least squares via orthogonal polynomials [PDF]

open access: yesSIAM Journal on Scientific Computing, 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

Moving least-squares corrections for smoothed particle hydrodynamics

open access: yesAnnals of Geophysics, 2011
First-order moving least-squares are typically used in conjunction with smoothed particle hydrodynamics in the form of post-processing filters for density fields, to smooth out noise that develops in most applications of smoothed particle hydrodynamics ...
Ciro Del Negro   +3 more
doaj   +4 more sources

Alternating least squares as moving subspace correction [PDF]

open access: yesSIAM Journal on Numerical Analysis, 2018
In this note we take a new look at the local convergence of alternating optimization methods for low-rank matrices and tensors. Our abstract interpretation as sequential optimization on moving subspaces yields insightful reformulations of some known ...
Oseledets, Ivan   +2 more
core   +4 more sources

Manifold Approximation by Moving Least-Squares Projection (MMLS) [PDF]

open access: yesConstructive Approximation, 2019
In order to avoid the curse of dimensionality, frequently encountered in Big Data analysis, there was a vast development in the field of linear and nonlinear dimension reduction techniques in recent years.
Levin, David, Sober, Barak
core   +3 more sources

Analysis of moving least squares approximation revisited

open access: yesJournal of Computational and Applied Mathematics, 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   +4 more sources

On Moving Least Squares Based Flow Visualization [PDF]

open access: yes, 2011
Modern simulation and measurement methods tend to produce meshfree data sets if modeling of processes or objects with free surfaces or boundaries is desired.
  +3 more
core   +4 more sources

Surfaces Generated by Moving Least Squares Methods [PDF]

open access: yesMathematics of Computation, 1981
An analysis of moving least squares (m.l.s.) methods for smoothing and interpolating scattered data is presented. In particular, theorems are proved concerning the smoothness of interpolants and the description of m.l.s. processes as projection methods. Some properties of compositions of the m.l.s.
Lancaster, P., Salkauskas, K.
openaire   +1 more source

Local geoid height approximation and interpolation using moving least squares approach

open access: yesGeodesy and Geodynamics, 2020
In this paper an introduction of the moving least squares approach is presented in the context of data approximation and interpolation problems in Geodesy.
M. Kiani
doaj   +1 more source

Improvement of Time Forecasting Models Using Machine Learning for Future Pandemic Applications Based on COVID-19 Data 2020–2022

open access: yesDiagnostics, 2023
Improving forecasts, particularly the accuracy, efficiency, and precision of time-series forecasts, is becoming critical for authorities to predict, monitor, and prevent the spread of the Coronavirus disease.
Abdul Aziz K Abdul Hamid   +9 more
doaj   +1 more source

Numerical analysis of the Volterra differential equations via a combination of evolutionary algorithms with moving least squares and finite difference methods

open access: yesThe Journal of Engineering, 2021
In this paper, the Volterra differential equations governing on the predator‐prey dynamics is numerically solved through the combination of evolutionary algorithms with Moving Least Squares as well as the Finite Difference Method.
Mohammad Javad Mahmoodabadi
doaj   +1 more source

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