Results 1 to 10 of about 3,086,260 (319)

Global Existence and Uniqueness of Solution of Atangana–Baleanu Caputo Fractional Differential Equation with Nonlinear Term and Approximate Solutions

open access: yesInternational Journal of Differential Equations, 2021
In this paper, a class of fractional order differential equation expressed with Atangana–Baleanu Caputo derivative with nonlinear term is discussed.
Meryeme Hassouna   +2 more
doaj   +1 more source

Optimal Control Problem for Non-linear Degenerate Parabolic Variation Inequality: Solvability and Attainability Issues

open access: yesJournal of Optimization, Differential Equations and Their Applications, 2023
We investigate the optimal control problem with respect to coefficients of the degenerate parabolic variational inequality. Since problems of this type can have the Lavrentieff effect, we consider the optimal control problem in a class of so-called ...
Nina V. Kasimova   +2 more
doaj   +1 more source

Data Based Construction of Kernels for Semi-Supervised Learning With Less Labels

open access: yesFrontiers in Applied Mathematics and Statistics, 2019
This paper deals with the problem of semi-supervised learning using a small number of training samples. Traditional kernel based methods utilize either a fixed kernel or a combination of judiciously chosen kernels from a fixed dictionary. In contrast, we
Hrushikesh Mhaskar   +3 more
doaj   +1 more source

A Brand-New Simple, Fast, and Effective Residual-Based Method for Radial Basis Function Neural Networks Training

open access: yesIEEE Access, 2023
The radial basis function (RBF) neural network is a type of universal approximator, and has been widely used in various fields. Improving the training speed and compactness of RBF networks are critical for promoting their applications.
Lifei Sun   +6 more
doaj   +1 more source

APPROXIMATION OF UNIVERSAL MAGNETIC CHARACTERISTIC FOR MODELLING ELECTRIC TRACTION MACHINES

open access: yesNauka ta progres transportu, 2017
Purpose. The scientific work is aimed to obtain an analytic expression describing universal magnetic characteristic and enabling to take into account the demagnetizing effect of the armature.
A. Yu. Drubetskyi
doaj   +1 more source

Algorithms and error bounds for multivariate piecewise constant approximation [PDF]

open access: yes, 2010
We review the surprisingly rich theory of approximation of functions of many vari- ables by piecewise constants. This covers for example the Sobolev-Poincar´e inequalities, parts of the theory of nonlinear approximation, Haar wavelets and tree ...
Davydov, Oleg
core   +1 more source

Effects of subleading color in a parton shower [PDF]

open access: yes, 2015
Parton shower Monte Carlo event generators in which the shower evolves from hard splittings to soft splittings generally use the leading color (LC) approximation, which is the leading term in an expansion in powers of $1/N_\Lc^2$, where $N_\Lc = 3$ is ...
Nagy, Zoltan, Soper, Davison E.
core   +2 more sources

Quantifying uncertainty in the estimation of probability distributions

open access: yesMathematical Biosciences and Engineering, 2008
We consider ordinary least squares parameter estimation problemswhere the unknown parameters to be estimated are probabilitydistributions. A computational framework for quantification ofuncertainty (e.g., standard errors) associated with the ...
H.T. Banks, Jimena L. Davis
doaj   +1 more source

Ou comme ça, machin et autres marqueurs d’indétermination dans les listes

open access: yesDiscours, 2017
This article deals with two extension particles (or “general extenders”) found in the OFROM corpus (French spoken in Switzerland). On the one hand, we study the sequence ou comme ça (“or like that”), whose high frequency seems to be characteristic of the
Marie-José Béguelin   +1 more
doaj   +1 more source

Nonlinear tensor product approximation of functions [PDF]

open access: yes, 2014
We are interested in approximation of a multivariate function $f(x_1,\dots,x_d)$ by linear combinations of products $u^1(x_1)\cdots u^d(x_d)$ of univariate functions $u^i(x_i)$, $i=1,\dots,d$.
Bazarkhanov, D., Temlyakov, V.
core   +1 more source

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