Results 21 to 30 of about 4,063,184 (303)

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. These techniques (sometimes referred to as manifold learning) assume that the scattered input data is lying on a lower dimensional manifold, thus ...
Sober, Barak, Levin, David
openaire   +4 more sources

SOME COMPARISON RESULTS FOR MOVING LEAST-SQUARE APPROXIMATIONS [PDF]

open access: yesInternational Journal of Pure and Apllied Mathematics, 2016
Some properties of moving least-square approximations for two concrete weight functions are investigated. The used thecnique is based on some properties of differential equations and applications of the theory of Lyapunov functions.
Nenov S., Tsvetkov T.
openaire   +2 more sources

Analysis of a plane stress wave by the moving least squares method [PDF]

open access: yesBiuletyn Wojskowej Akademii Technicznej, 2014
A meshless method based on the moving least squares approximation is applied to stress wave propagation analysis. Two kinds of node meshes, the randomly generated mesh and the regular mesh are used.
Wojciech Dornowski
doaj   +1 more source

Spherical approximating and interpolating moving least squares in geodesy and geophysics: a case study for deriving gravity acceleration at sea surface in the Persian Gulf

open access: yesJournal of Geodetic Science, 2020
This paper is aimed at introducing the concept of Spherical Interpolating Moving Least Squares to the problems in geodesy and geophysics. Based on two previously known methods, namely Spherical Moving Least Squares and Interpolating Moving Least Squares,
Kiani M.
doaj   +1 more source

High-performance numerical algorithms and software for structured total least squares [PDF]

open access: yes, 2005
We present a software package for structured total least squares approximation problems. The allowed structures in the data matrix are block-Toeplitz, block-Hankel, unstructured, and exact.
Van Huffel, S.   +3 more
core   +2 more sources

Analysis of an augmented moving least squares approximation and the associated localized method of fundamental solutions

open access: yesComputers and Mathematics with Applications, 2020
The localized method of fundamental solutions (LMFS) is an efficient meshless collocation method that combines the concept of localization and the method of fundamental solutions (MFS).
Wen-Zhen Qu, C. Fan, Xiao-Lin Li
semanticscholar   +1 more source

An Element Free Galerkin Method Based on the Modified Moving Least Squares Approximation [PDF]

open access: yesJournal of Scientific Computing, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
H. Chowdhury   +3 more
semanticscholar   +4 more sources

A meshless discrete Galerkin method for solving the universe evolution differential equations based on the moving least squares approximation [PDF]

open access: yesIranian Journal of Astronomy and Astrophysics, 2017
In terms of observational data, there are some problems in the standard Big Bang cosmological model. Inflation era, early accelerated phase of the evolution of the universe, can successfully solve these problems.
Pouria Assari, Vahid Kamali, Ali Suri
doaj   +1 more source

Frequency Analysis of Functionally Graded Carbon Nanotube-reinforced Cylindrical Panels by Mesh-free Galerkin Method [PDF]

open access: yesMechanics of Advanced Composite Structures, 2021
In this work, the three-dimensional mesh-free (3D-Mfree) method is used for free vibration analysis of functionally graded (FG) cylindrical panels reinforced by carbon nanotubes.
Jaber Alihemmati   +3 more
doaj   +1 more source

Enhancement of the Moving Horizon Estimation Performance Based on an Adaptive Estimation Algorithm

open access: yesJournal of Control Science and Engineering, 2021
Although moving horizon estimation (MHE) is a very efficient technique for estimating parameters and states of constrained dynamical systems, however, the approximation of the arrival cost remains a major challenge and therefore a popular research topic.
Steve Alan Talla Ouambo   +3 more
doaj   +1 more source

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