Results 21 to 30 of about 123,927 (253)

A New Biased Estimator Derived from Principal Component Regression Estimator [PDF]

open access: yes, 2010
A new biased estimator obtained by combining the Principal Component Regression Estimator and the special case of Liu-type estimator is proposed.
Low, Heng Chin   +2 more
core   +2 more sources

Liu-Type logistic estimator under Stochastic Linear Restrictions

open access: yesCeylon Journal of Science, 2018
To conquer the multicollinearity problem in logistic regression, many alternative estimators have been proposed in the literature when some linear restrictions on the parameter space are available in addition to the sample model.
Nagarajah Varathan   +1 more
doaj   +1 more source

A New Perspective on Robust $M$-Estimation: Finite Sample Theory and Applications to Dependence-Adjusted Multiple Testing [PDF]

open access: yes, 2017
Heavy-tailed errors impair the accuracy of the least squares estimate, which can be spoiled by a single grossly outlying observation. As argued in the seminal work of Peter Huber in 1973 [{\it Ann.
Bose, Koushiki   +3 more
core   +2 more sources

The beta Liu-type estimator: simulation and application

open access: yesHacettepe Journal of Mathematics and Statistics, 2023
The Beta Regression Model (BRM) is commonly used while analyzing data where the dependent variable is restricted to the interval $[0,1]$ for example proportion or probability. The Maximum Likelihood Estimator (MLE) is used to estimate the regression coefficients of BRMs.
Ali ERKOÇ   +3 more
openaire   +4 more sources

Quantile regression in high-dimension with breaking [PDF]

open access: yes, 2013
The paper considers a linear regression model in high-dimension for which the predictive variables can change the influence on the response variable at unknown times (called change-points).
Ciuperca, Gabriela
core   +4 more sources

A New Liu Type of Estimator for the Restricted SUR Estimator

open access: yesJournal of Modern Applied Statistical Methods, 2020
A new Liu type of estimator for the seemingly unrelated regression (SUR) models is proposed that may be used when estimating the parameters vector in the presence of multicollinearity if the it is suspected to belong to a linear subspace. The dispersion matrices and the mean squared error (MSE) are derived.
Kristofer Månsson   +2 more
openaire   +2 more sources

On the Performance of Principal Component Liu-Type Estimator under the Mean Square Error Criterion

open access: yesJournal of Applied Mathematics, 2013
Wu (2013) proposed an estimator, principal component Liu-type estimator, to overcome multicollinearity. This estimator is a general estimator which includes ordinary least squares estimator, principal component regression estimator, ridge estimator, Liu ...
Jibo Wu
doaj   +1 more source

Distributed state estimation for uncertain Markov-type sensor networks with mode-dependent distributed delays [PDF]

open access: yes, 2012
This the post-print version of the Article. The official published version can be accessed from the link below - Copyright @ 2012 John Wiley & Sons, Ltd.In this paper, the distributed state estimation problem is investigated for a class of sensor ...
Boukas   +26 more
core   +1 more source

Hypothesis Testing of Matrix Graph Model with Application to Brain Connectivity Analysis [PDF]

open access: yes, 2015
Brain connectivity analysis is now at the foreground of neuroscience research. A connectivity network is characterized by a graph, where nodes represent neural elements such as neurons and brain regions, and links represent statistical dependences that ...
Li, Lexin, Xia, Yin
core   +3 more sources

Robust variable selection for nonlinear models with diverging number of parameters [PDF]

open access: yes, 2014
We focus on the problem of simultaneous variable selection and estimation for nonlinear models based on modal regression (MR), when the number of coefficients diverges with sample size.
Lv, Z, Yu, K, Zhu, H
core   +1 more source

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