Results 41 to 50 of about 4,819,578 (314)

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 Tobit Ridge-Type Estimator of the Censored Regression Model With Multicollinearity Problem

open access: yesFrontiers in Applied Mathematics and Statistics, 2022
In the censored regression model, the Tobit maximum likelihood estimator is unstable and inefficient in the occurrence of the multicollinearity problem.
Issam Dawoud   +3 more
doaj   +1 more source

Robust Liu-Type Estimator for SUR Model

open access: yesStatistics, Optimization & Information Computing, 2021
The Liu-type estimator is one of the shrink estimators that is used to remedy for a problem of multicollinearityin SUR model, but it is sensitive to the outlier. In this paper, we introduce the S Liu-type (SLiu-type) and MM Liu-type estimator (MMLiu-type) for SUR model.
openaire   +2 more sources

Lookahead Strategies for Sequential Monte Carlo [PDF]

open access: yes, 2013
Based on the principles of importance sampling and resampling, sequential Monte Carlo (SMC) encompasses a large set of powerful techniques dealing with complex stochastic dynamic systems.
Chen, Rong, Lin, Ming, Liu, Jun S.
core   +2 more sources

A Liu estimator for the beta regression model and its application to chemical data

open access: yes, 2020
Beta regression has become a popular tool for performing regression analysis on chemical, environmental, or biological data in which the dependent variable is restricted to the interval [0, 1].
P. Karlsson   +2 more
semanticscholar   +1 more source

To Adjust or Not to Adjust? Sensitivity Analysis of M-Bias and Butterfly-Bias [PDF]

open access: yes, 2014
"M-Bias," as it is called in the epidemiologic literature, is the bias introduced by conditioning on a pretreatment covariate due to a particular "M-Structure" between two latent factors, an observed treatment, an outcome, and a "collider." This ...
Ding, Peng, Miratrix, Luke
core   +1 more source

The Liu-Type Estimator Based on Parameter Optimization and its Application in SBAS Deformation Model Inversion

open access: yesIEEE Access, 2021
A situation in which an image is combined with multiple images to form interferometric pairs is often observed in small baseline subset-interferometric synthetic aperture radar (SBAS-InSAR) deformation inversion, and this situation leads to a near linear
Min Zhai   +6 more
doaj   +1 more source

Design of exponential state estimators for neural networks with mixed time delays [PDF]

open access: yes, 2007
This is the post print version of the article. The official published version can be obtained from the link below - Copyright 2007 Elsevier Ltd.In this Letter, the state estimation problem is dealt with for a class of recurrent neural networks (RNNs ...
Arik   +22 more
core   +1 more source

A new Poisson Liu Regression Estimator: method and application [PDF]

open access: yesJournal of Applied Statistics, 2019
This paper considers the estimation of parameters for the Poisson regression model in the presence of high, but imperfect multicollinearity. To mitigate this problem, we suggest using the Poisson Liu Regression Estimator (PLRE) and propose some new approaches to estimate this shrinkage parameter.
Muhammad Qasim   +3 more
openaire   +2 more sources

Kibria–Lukman-Type Estimator for Regularization and Variable Selection with Application to Cancer Data

open access: yesMathematics, 2023
Following the idea presented with regard to the elastic-net and Liu-LASSO estimators, we proposed a new penalized estimator based on the Kibria–Lukman estimator with L1-norms to perform both regularization and variable selection.
Adewale Folaranmi Lukman   +5 more
doaj   +1 more source

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