Results 1 to 10 of about 949,851 (307)
An Improved Model for Kernel Density Estimation Based on Quadtree and Quasi-Interpolation
Mathematics, 2022 There are three main problems for classical kernel density estimation in its application: boundary problem, over-smoothing problem of high (low)-density region and low-efficiency problem of large samples.
Jiecheng Wang, Yantong Liu, Jincai Chang
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Mathematics, 2021 An advanced new methodology is presented to improve parameter extraction in resistive memories. The series resistance and some other parameters in resistive memories are obtained, making use of a two-stage algorithm, where the second one is based on ...
María José Ibáñez +4 more
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, 2022 Quasi-interpolation is one of the most useful and often applied methods for the approximation of functions and data in mathematics and applications. Its advantages are manifold: quasi-interpolants are able to approximate in any number of dimensions, they are efficient and relatively easy to formulate for scattered and meshed nodes and for any number of
Martin Buhmann, Janin Jäger
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Bivariate hierarchical Hermite spline quasi--interpolation [PDF]
BIT Numerical Mathematics, 2016 Spline quasi-interpolation (QI) is a general and powerful approach for the construction of low cost and accurate approximations of a given function. In order to provide an efficient adaptive approximation scheme in the bivariate setting, we consider ...
Bracco, Cesare +3 more
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Advances in Mechanical Engineering, 2020 Nonlinear partial differential equations are widely studied in Applied Mathematics and Physics. The generalized Burgers-Huxley equations play important roles in different nonlinear physics mechanisms.
Lan-Yin Sun, Chun-Gang Zhu
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Quasi-Interpolation in a Space of C2 Sextic Splines over Powell–Sabin Triangulations
Mathematics, 2021 In this work, we study quasi-interpolation in a space of sextic splines defined over Powell–Sabin triangulations. These spline functions are of class C2 on the whole domain but fourth-order regularity is required at vertices and C3 regularity is imposed ...
Salah Eddargani +4 more
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Compression using Quasi-Interpolation
arXiv.orgWe consider quasi-interpolation with a main application in radial basis function approximations and compression in this article. Constructing and using these quasi-interpolants, we consider wavelet and compression-type approximations from their linear spaces and provide convergence estimates.
Buhmann, Martin, Dai, Feng
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New methods for quasi-interpolation approximations: resolution of odd-degree singularities [PDF]
Mathematics and Computers in Simulation, 2023 In this paper, we study functional approximations where we choose the so-called radial basis function method and more specifically, quasi-interpolation.
Martin Buhmann +3 more
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Numerical Solution of Saint-Venant Equation by Cubic B-spline Quasi-interpolation [PDF]
Jisuanji kexue, 2023 Firstly,the error estimates of cubic spline quasi-intepolating operators are derived for continuous differential function with different orders.Secondly,cubic B-spline quasi-interpolation is used to get the numerical solution of Saint-Venant equation ...
QIAN Jiang, ZHANG Ding
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High Accuracy Quasi-Interpolation using a new class of generalized Multiquadrics [PDF]
arXiv.org, 2023 A new generalization of multiquadric functions $\phi(x)=\sqrt{c^{2d}+||x||^{2d}}$, where $x\in\mathbb{R}^n$, $c\in \mathbb{R}$, $d\in \mathbb{N}$, is presented to increase the accuracy of quasi-interpolation further.
Mathis Ortmann, M. Buhmann
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