Results 11 to 20 of about 1,691,919 (306)

Relative Efficiency of Maximum Likelihood and Other Estimators in a Nonlinear Regression Model with Small Measurement Errors [PDF]

open access: yes, 2004
We compare the asymptotic covariance matrix of the ML estimator in a nonlinear measurement error model to the asymptotic covariance matrices of the CS and SQS estimators studied in Kukush et al (2002). For small measurement error variances they are equal
Kukush, Alexander, Schneeweiß, Hans
core   +1 more source

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   +5 more sources

On the accuracy of aposteriori error estimators

open access: yesLietuvos Matematikos Rinkinys, 2000
The analysis of the accuracy of the  a posteriori error estimation procedure for finite-element solutions is presented. Simple error estimators of residual type are constructed, they allow error estimation in any norm with little extra effort.
Raimondas Čiegis, Olga Suboč
doaj   +3 more sources

A Combined Family of Ratio Estimators for Population Mean using an Auxiliary Variable in Simple Random Sampling

open access: yesJournal of Mathematical and Fundamental Sciences, 2019
This paper proposes two new classes of ratio estimators for population mean when information on a known auxiliary variable is available in simple random sampling.
Uraiwan Jaroengeratikun, Nuanpan Lawson
doaj   +1 more source

Model Selection and Error Estimation [PDF]

open access: yesMachine Learning, 2000
We study model selection strategies based on penalized empirical loss minimization. We point out a tight relationship between error estimation and data-based complexity penalization: any good error estimate may be converted into a data-based penalty function and the performance of the estimate is governed by the quality of the error estimate.
Peter L. Bartlett   +2 more
openaire   +7 more sources

The polynomial and the Poisson measurement error models: some further results on quasi score and corrected score estimation [PDF]

open access: yes, 2005
The asymptotic covariance matrices of the corrected score, the quasi score, and the simple score estimators of a polynomial measurement error model have been derived in the literature.
Schneeweiß, Hans
core   +1 more source

Comparison of Maximum Likelihood and some Bayes Estimators for Maxwell Distribution based on Non-informative Priors

open access: yesمجلة بغداد للعلوم, 2013
In this paper, Bayes estimators of the parameter of Maxwell distribution have been derived along with maximum likelihood estimator. The non-informative priors; Jeffreys and the extension of Jeffreys prior information has been considered under two ...
Baghdad Science Journal
doaj   +1 more source

Estimation error of the constrained lasso [PDF]

open access: yes2016 54th Annual Allerton Conference on Communication, Control, and Computing (Allerton), 2016
This paper presents a non-asymptotic upper bound for the estimation error of the constrained lasso, under the high-dimensional (n ≪ p) setting. In contrast to existing results, the error bound in this paper is sharp, is valid when the parameter to be estimated is not exactly sparse (e.g., when it is weakly sparse), and shows explicitly the effect of ...
Nissim Zerbib   +3 more
openaire   +3 more sources

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   +4 more sources

Dual Use of Auxiliary Information for Estimating the Finite Population Mean under the Stratified Random Sampling Scheme

open access: yesJournal of Mathematics, 2021
In this paper, we proposed an improved family of estimators for finite population mean under stratified random sampling, which needed a helping variable on the sample mean and rank of the auxiliary variable.
Sohaib Ahmad   +5 more
doaj   +1 more source

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