Results 11 to 20 of about 90,750 (294)

A new stable basis for radial basis function interpolation

open access: yesJournal of Computational and Applied Mathematics, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
DE MARCHI, STEFANO, SANTIN, GABRIELE
openaire   +7 more sources

An algorithm for choosing a good shape parameter for radial basis functions method with a case study in image processing

open access: yesResults in Applied Mathematics, 2022
Some efficient radial basis functions (RBFs) have a free parameter called the shape parameter that controls the shape of approximating function. This parameter is mainly selected by trial and error related to the problem.
Shabnam Sadat Seyed Ghalichi   +2 more
doaj   +1 more source

On Point Spread Function modelling: towards optimal interpolation [PDF]

open access: yes, 2011
Point Spread Function (PSF) modeling is a central part of any astronomy data analysis relying on measuring the shapes of objects. It is especially crucial for weak gravitational lensing, in order to beat down systematics and allow one to reach the full ...
Adam Amara   +25 more
core   +2 more sources

Scattered data approximation using radial basis function with a cubic polynomial reproduction for modelling leaf surface

open access: yesJournal of Taibah University for Science, 2018
Realistic leaf models are significant for numerous applications in the plant sciences, for instance, modelling pesticide droplet movement on the leaf surface.
Moa’ath N. Oqielat
doaj   +1 more source

Comparative study of interpolation methods for mapping soil pH in the apple orchards of Murree, Pakistan

open access: yesSoil & Environment, 2017
Soil pH is considered as a core indicator for nutrient bioavailability. Prevailing alkaline pH due to calcareousness in Pakistan is considered as one of the limiting factor for nutrient availability to plants.
Humair Ahmed   +3 more
doaj   +1 more source

Limits of radial basis function interpolants

open access: yesCommunications on Pure & Applied Analysis, 2007
We solve some open problems posed by Fornberg et al. in [6], [9] and [12], related to radial basis functions with parameters. They concern the limits of interpolants using these radial basis functions when the aforementioned parameters tend to zero--which makes them "increasingly flat" in a term coined by Fornberg.
Buhmann, Martin D., Dinew, Sławomir
openaire   +2 more sources

Numerical Solution of Mixed Volterra – Fredholm Integral Equation Using the Collocation Method

open access: yesمجلة بغداد للعلوم, 2020
Volterra – Fredholm integral equations (VFIEs) have a massive interest from researchers recently. The current study suggests a collocation method for the mixed Volterra - Fredholm integral equations (MVFIEs)."A point interpolation collocation method is ...
Nahdh S. M. Al-Saif, Ameen Sh. Ameen
doaj   +1 more source

Interpolation by periodic radial basis functions

open access: yesJournal of Mathematical Analysis and Applications, 1992
It is the aim of the paper to consider interpolation on a set of nodes \(y_ i\) on the unit circle \(S^ 1\) by radial basis functions of the form \(f(d(x,y_ j))\), where \(d\) denotes the geodesic distance on \(S^ 1\). For this purpose it is natural to investigate the behavior of the interpolation matrix \(A\) with entries \(A_{i,j}=f(d(y_ i,y_ j ...
Light, W.A, Cheney, E.W
openaire   +2 more sources

Comparative investigation of parallel spatial interpolation algorithms for building large-scale digital elevation models [PDF]

open access: yesPeerJ Computer Science, 2020
The building of large-scale Digital Elevation Models (DEMs) using various interpolation algorithms is one of the key issues in geographic information science.
Jingzhi Tu   +4 more
doaj   +2 more sources

Out-of-sample generalizations for supervised manifold learning for classification [PDF]

open access: yes, 2015
Supervised manifold learning methods for data classification map data samples residing in a high-dimensional ambient space to a lower-dimensional domain in a structure-preserving way, while enhancing the separation between different classes in the ...
Guillemot, Christine, Vural, Elif
core   +5 more sources

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