Results 11 to 20 of about 701,176 (312)

Pedigree error due to extra-pair reproduction substantially biases estimates of inbreeding depression [PDF]

open access: yes, 2013
Understanding the evolutionary dynamics of inbreeding and inbreeding depression requires unbiased estimation of inbreeding depression across diverse mating systems.
Arcese, Peter   +9 more
core   +1 more source

The estimation of truncation error by τ-estimation revisited [PDF]

open access: yesJournal of Computational Physics, 2012
The aim of this paper was to accurately estimate the local truncation error of partial differential equations, that are numerically solved using a finite difference or finite volume approach on structured and unstructured meshes. In this work, we approximated the local truncation error using the @t-estimation procedure, which aims to compare the ...
Fraysse, François   +2 more
openaire   +3 more sources

Robust a priori and a posteriori error analysis for the approximation of Allen–Cahn and Ginzburg–Landau equations past topological changes [PDF]

open access: yes, 2010
A priori and a posteriori error estimates are derived for the numerical approximation of scalar and complex valued phase field models. Particular attention is devoted to the dependence of the estimates on a small parameter and to the validity of the ...
Rüdiger Müller   +11 more
core   +1 more source

Cardinal approximation of functions by splines on an interval

open access: yesMathematical Modelling and Analysis, 2009
The cardinal interpolant of functions on the real line by splines is determined by certain formula free of solving large or infinite systems. We apply this formula to functions given on the interval [0,1] introducing special extensions of functions from [
Gennadi Vainikko
doaj   +1 more source

Estimates of the Approximation Error Using Rademacher Complexity: Learning Vector-Valued Functions [PDF]

open access: yes, 2008
For certain families of multivariable vector-valued functions to be approximated, the accuracy of approximation schemes made up of linear combinations of computational units containing adjustable parameters is investigated.
Gnecco Giorgio   +7 more
core   +1 more source

Data filtering based stochastic gradient algorithms for multivariable CARAR-like systems

open access: yesMathematical Modelling and Analysis, 2013
This paper considers identification problems for a multivariable controlled autoregressive system with autoregressive noises. A hierarchical generalized stochastic gradient algorithm and a filtering based hierarchical stochastic gradient algorithm are ...
Dongqing Wang, Tong Shan, Rui Ding
doaj   +1 more source

CAVEAT ON THE ERROR ANALYSIS FOR STEREOLOGICAL ESTIMATES

open access: yesImage Analysis and Stereology, 2011
It is frequently asked that how big a sample size, or how much measurement, is needed to achieve an accuratestereological estimate. The observed total error of a stereological estimate arises from individual difference (i.e.
Zhengwei Yang   +3 more
doaj   +1 more source

A priori error estimates for energy-based quasicontinuum approximations of a periodic chain [PDF]

open access: yes, 2011
We derive a priori error estimates for three prototypical energy-based quasicontinuum (QC) methods: the local QC method, the energy-based QC method, and the quasi-nonlocal QC method.
Christoph Ortner   +3 more
core   +1 more source

Accurate error estimation in CG [PDF]

open access: yesNumerical Algorithms, 2021
In practical computations, the (preconditioned) conjugate gradient (P)CG method is the iterative method of choice for solving systems of linear algebraic equations $Ax=b$ with a real symmetric positive definite matrix $A$. During the iterations it is important to monitor the quality of the approximate solution $x_k$ so that the process could be stopped
Gérard Meurant, Jan Papez, Petr Tichý
openaire   +3 more sources

Prevalence of refractive error in Europe: the European Eye Epidemiology (E(3)) Consortium. [PDF]

open access: yes, 2015
To estimate the prevalence of refractive error in adults across Europe. Refractive data (mean spherical equivalent) collected between 1990 and 2013 from fifteen population-based cohort and cross-sectional studies of the European Eye Epidemiology (E(3 ...
Cumberland, P.M.   +159 more
core   +1 more source

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