Results 41 to 50 of about 418,071 (190)

Modeling mixed boundary conditions in a Hilbert space with the complex variable boundary element method (CVBEM)

open access: yesMethodsX, 2015
The Laplace equation that results from specifying either the normal or tangential force equilibrium equation in terms of the warping functions or its conjugate can be modeled as a complex variable boundary element method or CVBEM mixed boundary problem ...
Anthony N. Johnson, T.V. Hromadka II
doaj   +1 more source

Empirical Likelihood Confidence Region for Parameters in Semi-linear Errors-in-Variables Models [PDF]

open access: yes, 2006
This paper proposes a constrained empirical likelihood confidence region for a parameter in the semi-linear errors-in-variables model. The confidence region is constructed by combining the score function corresponding to the squared orthogonal distance
Cui, Hengjian, Kong, Efang
core   +1 more source

The problem of the initial approximation for a special nonlinear least squares problem [PDF]

open access: yes, 1996
In [6] the existence theorem for the best least squares approximation of parameters for the exponential function is proved.
D. Jukić
core   +1 more source

A Levinson-Galerkin algorithm for regularized trigonometric approximation

open access: yes, 1999
Trigonometric polynomials are widely used for the approximation of a smooth function $f$ from a set of nonuniformly spaced samples $\{f(x_j)\}_{j=0}^{N-1}$.
Strohmer, Thomas
core   +3 more sources

A Christoffel function weighted least squares algorithm for collocation approximations

open access: yesMathematics of Computation, 2016
We propose, theoretically investigate, and numerically validate an algorithm for the Monte Carlo solution of least-squares polynomial approximation problems in a collocation frame- work. Our method is motivated by generalized Polynomial Chaos approximation in uncertainty quantification where a polynomial approximation is formed from a combination of ...
Narayan, Akil   +2 more
openaire   +2 more sources

Using Maximum Likelihood Method to Estimate Parameters of the Linear Regression T Truncated Model

open access: yesNTU Journal of Pure Sciences, 2022
The estimation of the parameters is one of an important issues in the mathematical statistics. The development of estimation methods requires accurate estimation and finds the best estimator for parameters.
Elham Abduklreem Hussain   +2 more
doaj   +1 more source

Least Squares Solutions of the HJB Equation With Neural Network Value-Function Approximators [PDF]

open access: yesIEEE Transactions on Neural Networks, 2007
In this paper, we present an empirical study of iterative least squares minimization of the Hamilton-Jacobi-Bellman (HJB) residual with a neural network (NN) approximation of the value function. Although the nonlinearities in the optimal control problem and NN approximator preclude theoretical guarantees and raise concerns of numerical instabilities ...
Yuval, Tassa, Tom, Erez
openaire   +2 more sources

Derivation Of Moving Least-Squares Approximation Shape Functions And Its Derivatives Using The Exponential Weight Function

open access: yesCivil Engineering Dimension, 2007
In recent years, meshless methods have gained their popularity, mainly due to the fact that absolutely no elements are required to discretize the problem domain.
Effendy Tanojo
doaj  

Numerical simulation based on FEM/MLS coupling for solid mechanics [PDF]

open access: yes, 2013
This paper presents the development of Meshless Methods based on the weighted least squares approximation (MLS) [1,3,14] to solve 2D mechanical problems.
Ghozzi, Y., Labergere, C., Villon, P.
core  

RLS-based Identification of fractional order H n1,n2 system using the Singularity Function approximation

open access: yesAlgerian Journal of Signals and Systems, 2020
This paper presents a study of fractional order systems modeling and identification by recursive least squares (RLS) with forgetting factor estimation technique.
Yamina Ali Larnene   +2 more
doaj   +1 more source

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