Results 151 to 160 of about 163,142 (181)

Applications of resampling methods in multivariate Liu estimator

Computational Statistics, 2022
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Pirmohammadi, Shima, Bidram, Hamid
openaire   +2 more sources

A state estimation of Liu equations

AIP Conference Proceedings, 2015
This paper is concerned with state estimation problems for so-called Liu equations. These equations are counterparts of well-known Ito ones and they were introduced by B. Liu under elaboration of his uncertain theory. The Liu equations may be solved backward and they represent a more convenient object for the state estimation problem solution ...
openaire   +1 more source

Robust Liu-type estimator for regression based on M-estimator

Communications in Statistics - Simulation and Computation, 2015
ABSTRACTThe problem of multicollinearity and outliers in the dataset can strongly distort ordinary least-square estimates and lead to unreliable results. We propose a new Robust Liu-type M-estimator to cope with this combined problem of multicollinearity and outliers in the y-direction.
Ertaş H., Kaçıranlar S., Güler H.
openaire   +1 more source

Liu and Ridge Estimators-A Comparison

Communications in Statistics - Theory and Methods, 2012
Liu (1993) proposed an estimator that is similar in form but different from the ridge regression estimator of Hoerl and Kennard. More recently, Ozkale and Kaciranlar (2007) proposed a two-parameter variation of the Liu estimator. This new estimator has a number of interesting properties.
openaire   +1 more source

Generalized Liu Type Estimators Under Zellner's Balanced Loss Function

Communications in Statistics - Theory and Methods, 2005
ABSTRACT In regression analysis, ridge regression estimators and Liu type estimators are often used to overcome the problem of multicollinearity. These estimators have been evaluated using the risk under quadratic loss criterion, which places sole emphasis on estimators′ precision. The traditional mean square error (MSE) as the measure of efficiency of
Akdeniz F., Wan A.T.K., Akdeniz E.
openaire   +1 more source

On the Stein-Type Liu Estimator and Positive-Rule Stein-Type Liu Estimator in Multiple Linear Regression Models

Communications in Statistics - Theory and Methods, 2012
In this article, the Stein-type Liu estimator and positive-rule Stein-type Liu estimator are constructed for the parameter vector in a multiple linear model under a multicollinearity situation when it is suspected that the regression coefficients may be restricted to a subspace.
Jianwen Xu, Hu Yang
openaire   +1 more source

Modified Almost Unbiased Liu Estimator in Linear Regression Model

Communications in Mathematics and Statistics, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Arumairajan, Sivarajah, Wijekoon, Pushpakanthie   +1 more
openaire   +2 more sources

Modified almost unbiased Liu estimator in logistic regression

Communications in Statistics - Simulation and Computation, 2019
This paper focuses on introducing a new parameter estimator to the logistic regression model when the multicollinearity presents.
Nagarajah Varathan, Pushpakanthie Wijekoon   +1 more
openaire   +1 more source

A New Liu-Ratio Estimator For Linear Regression Models

Istanbul Journal of Mathematics
Summary: In statistical modeling, regression analysis is a set of statistical processes for estimating the relationships between a dependent variable and one or more independent variables. Although there are various methods for estimating parameters, the most popular is the Ordinary Least Squares (OLS) method.
Giresunlu, İ. M., Akay, K. U., Ertan, E.   +2 more
openaire   +2 more sources

MODIFICATION OF LIU-TYPE ESTIMATOR FOR TWO SUR MODEL

Advances and Applications in Statistics, 2019
Summary: In this paper, we suggest a new biased Liu-Type estimator for the vector of parameters in a two SUR model. This Liu-type two SUR estimator based on ridge estimation. Furthermore, the superiority of this estimator from the ridge estimator and Liu-Type estimator was verified by mean square error (MSE).
openaire   +1 more source