Results 241 to 250 of about 10,950 (255)

Approximate Moving Least-Squares Approximation with Compactly Supported Radial Weights

2003
We use Maz’ya and Schmidt’s theory of approximate approximation to devise a fast and accurate approximate moving least-squares approximation method which does not require the solution of any linear systems. Since we use compactly supported weight functions, the remaining summation is also efficient.
openaire   +1 more source

Direct approximation on spheres using generalized moving least squares

BIT Numerical Mathematics, 2017
This paper presents a moving square method on the sphere of \(\mathbb R^d\) that differs from the classical one considering a different approach -- the so-called direct approach. Let \(X\) be the set of points in the sphere. The classical method is based on the approximation of a certain function \(u\) by a set of functions and requires the action of ...
openaire   +1 more source

Good quality point sets and error estimates for moving least square approximations

Applied Numerical Mathematics, 2003
The author discusses the construction of moving least square approximations. Error estimates in Sobolev spaces are given. It is discussed that the condition number of the star of nodes could be used as a good measure for the quality of the distribution of the nodes and patches.
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On Discrete Polynomial Least-Squares Approximation in Moving Time Windows

1999
The paper presents a modification algorithm for least-squares approximations in moving time windows for equidistant discrete data. Properties of discrete shift and difference operators are used to derive fast square-rootand division-free algorithms, especially suitable for implementation on DSPs, for some particular discrete weights.
openaire   +1 more source

A divergence-free generalized moving least squares approximation with its application

Applied Numerical Mathematics, 2021
Vahid Mohammadi, Mehdi Dehghan
exaly  

Approximate Moving Least Squares Approximation

2007
openaire   +1 more source

Analysis of the complex moving least squares approximation and the associated element-free Galerkin method

Applied Mathematical Modelling, 2017
Xiaolin Li, Shuling Li
exaly  

On the augmented moving least squares approximation and the localized method of fundamental solutions for anisotropic heat conduction problems

Engineering Analysis With Boundary Elements, 2020
Xiaolin Li, Shuling Li
exaly  

Complex variable moving least-squares method: a meshless approximation technique

International Journal for Numerical Methods in Engineering, 2007
K M Liew, Yumin Cheng, S Kitipornchai
exaly  

Improved complex variable moving least squares approximation for three-dimensional problems using boundary integral equations

Engineering Analysis With Boundary Elements, 2017
Xiaolin Li, Shuling Li
exaly