Results 11 to 20 of about 75,307 (298)

Dynamic system multivariate calibration by system identification methods [PDF]

open access: yesModeling, Identification and Control, 1998
In the first part of the paper, the optimal estimator for normally nonmeasured primary outputs from a linear and time invariant dynamic system is developed.
Rolf Ergon
doaj   +1 more source

Superiority of the MCRR Estimator Over Some Estimators In A Linear Model [PDF]

open access: yesالمجلة العراقية للعلوم الاحصائية, 2011
Modified (r, k) class ridge regression (MCRR) which includes unbiased ridge regression (URR), (r, k) class, principal components regression (PCR) and the ordinary least squares (OLS) estimators is proposed in regression analysis, to overcome the problem ...
Feras Sh. M. Batah
doaj   +1 more source

Simultaneous Prediction of Actual and Average Values of Study Variable Using Stein-rule Estimators [PDF]

open access: yes, 2011
The simultaneous prediction of average and actual values of study variable in a linear regression model is considered in this paper. Generally, either of the ordinary least squares estimator or Stein-rule estimators are employed for the construction of ...
Heumann, Christian, Shalabh, Shalabh
core   +1 more source

Correlation Based Ridge Parameters in Ridge Regression with Heteroscedastic Errors and Outliers [PDF]

open access: yesJournal of Statistical Theory and Applications (JSTA), 2015
This paper introduces some new estimators for estimating ridge parameter, based on correlation between response and regressor variables for ridge regression analysis.
A.V. Dorugade
doaj   +1 more source

M Robust Weighted Ridge Estimator in Linear Regression Model

open access: yesAfrican Scientific Reports, 2023
Correlated regressors are a major threat to the performance of the conventional ordinary least squares (OLS) estimator. The ridge estimator provides more stable estimates in this circumstance.
Taiwo Stephen Fayose   +2 more
doaj   +1 more source

Comparison of Some Estimators under the Pitman’s Closeness Criterion in Linear Regression Model

open access: yesJournal of Applied Mathematics, 2014
Batah et al. (2009) combined the unbiased ridge estimator and principal components regression estimator and introduced the modified r-k class estimator.
Jibo Wu
doaj   +1 more source

A Modified New Two-Parameter Estimator in a Linear Regression Model

open access: yesModelling and Simulation in Engineering, 2019
The literature has shown that ordinary least squares estimator (OLSE) is not best when the explanatory variables are related, that is, when multicollinearity is present. This estimator becomes unstable and gives a misleading conclusion.
Adewale F. Lukman   +3 more
doaj   +1 more source

The VIF and MSE in Raise Regression

open access: yesMathematics, 2020
The raise regression has been proposed as an alternative to ordinary least squares estimation when a model presents collinearity. In order to analyze whether the problem has been mitigated, it is necessary to develop measures to detect collinearity after
Román Salmerón Gómez   +3 more
doaj   +1 more source

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

MENGATASI PENCILAN PADA PEMODELAN REGRESI LINEAR BERGANDA DENGAN METODE REGRESI ROBUST PENAKSIR LMS

open access: yesBarekeng, 2019
Ordinary Least Squares (OLS) is frequent used method for estimating parameters. OLS estimator is not a robust regression procedure for the presence of outliers, so the estimate becomes inappropriate.
Farida Daniel
doaj   +1 more source

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