Results 11 to 20 of about 3,264,185 (285)

Robust Relative Error Estimation [PDF]

open access: yesEntropy, 2018
Relative error estimation has been recently used in regression analysis. A crucial issue of the existing relative error estimation procedures is that they are sensitive to outliers. To address this issue, we employ the γ -likelihood function, which is constructed through γ -cross entropy with keeping the original statistical model in use. The
Kei Hirose, Hiroki Masuda
openaire   +4 more sources

Stability estimate and regularization for a radially symmetric inverse heat conduction problem

open access: yesBoundary Value Problems, 2017
This paper investigates a radially symmetric inverse heat conduction problem, which determines the internal surface temperature distribution of the hollow sphere from measured data at the fixed location inside it. This is an inverse and ill-posed problem.
Wei Cheng
doaj   +1 more source

Errors on errors – Estimating cosmological parameter covariance [PDF]

open access: yesProceedings of the International Astronomical Union, 2014
AbstractCurrent and forthcoming cosmological data analyses share the challenge of huge datasets alongside increasingly tight requirements on the precision and accuracy of extracted cosmological parameters. The community is becoming increasingly aware that these requirements not only apply to the central values of parameters but, equally important, also
Joachimi, Benjamin, Taylor, Andy
openaire   +2 more sources

A weak Galerkin finite element approximation of two-dimensional sub-diffusion equation with time-fractional derivative

open access: yesAIMS Mathematics, 2020
We develop a fully discrete weak Galerkin finite element method for the initial-boundary value problem of two-dimensional sub-diffusion equation with Caputo time-fractional derivative.
Ailing Zhu, Yixin Wang, Qiang Xu
doaj   +1 more source

Truncation error estimation for Newton–Cotes quadrature formulas

open access: yesLietuvos Matematikos Rinkinys, 2004
Theoretical and practical aspects of truncation error estimation for Newton–Cotes quadrature formulas are discussed in this paper.
Kostas Plukas, Danutė Plukienė
doaj   +1 more source

Muon capture on deuteron using local chiral potentials

open access: yesFrontiers in Physics, 2023
The muon capture reaction μ− + d → n + n + νμ in the doublet hyperfine state is studied using nuclear potentials and consistent currents derived in the chiral effective field theory, which are local and expressed in coordinate space (the so-called ...
L. Ceccarelli   +6 more
doaj   +1 more source

Picard-Reproducing Kernel Hilbert Space Method for Solving Generalized Singular Nonlinear Lane-Emden Type Equations

open access: yesMathematical Modelling and Analysis, 2015
An iterative method is discussed with respect to its effectiveness and capability of solving singular nonlinear Lane-Emden type equations using reproducing kernel Hilbert space method combined with the Picard iteration.
Babak Azarnavid   +2 more
doaj   +1 more source

Optimal Convergence Analysis of Two-Level Nonconforming Finite Element Iterative Methods for 2D/3D MHD Equations

open access: yesEntropy, 2022
Several two-level iterative methods based on nonconforming finite element methods are applied for solving numerically the 2D/3D stationary incompressible MHD equations under different uniqueness conditions.
Haiyan Su, Jiali Xu, Xinlong Feng
doaj   +1 more source

Discrepancy-based error estimates for Quasi-Monte Carlo. I: General formalism [PDF]

open access: yes, 1996
We show how information on the uniformity properties of a point set employed in numerical multidimensional integration can be used to improve the error estimate over the usual Monte Carlo one. We introduce a new measure of (non-)uniformity for point sets,
Berblinger   +22 more
core   +2 more sources

Convergence of a linearly extrapolated BDF2 finite element scheme for viscoelastic fluid flow

open access: yesBoundary Value Problems, 2017
The stability and convergence of a linearly extrapolated second order backward difference (BDF2-LE) time-stepping scheme for solving viscoelastic fluid flow in R d $\mathbb{R}^{d}$ , d = 2 , 3 $d=2,3$ , are presented in this paper.
Yunzhang Zhang, Chao Xu, Jiaquan Zhou
doaj   +1 more source

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