Buscar
Mostrando ítems 1-10 de 8875
Improved likelihood inference for the shape parameter in Weibull regression
(TAYLOR & FRANCIS LTD, 2008)
We obtain adjustments to the profile likelihood function in Weibull regression models with and without censoring. Specifically, we consider two different modified profile likelihoods: (i) the one proposed by Cox and Reid ...
Signed likelihood ratio tests in the Birnbaum-Saunders regression model
(ELSEVIER SCIENCE BV, 2011)
The Birnbaum-Saunders regression model is becoming increasingly popular in lifetime analyses and reliability studies. In this model, the signed likelihood ratio statistic provides the basis for testing inference and ...
Improved likelihood inference in beta regression
(TAYLOR & FRANCIS LTD, 2011)
We consider the issue of performing accurate small-sample likelihood-based inference in beta regression models, which are useful for modelling continuous proportions that are affected by independent variables. We derive ...
A note on the likelihood and moments of the skew-normal distribution
(INST ESTADISTICA CATALUNYA-IDESCAT, 2008)
In this paper an alternative approach to the one in Henze (1986) is proposed for deriving the odd moments of the skew-normal distribution considered in Azzalini (1985). The approach is based on a Pascal type triangle, which ...
A matrix formula for the skewness of maximum likelihood estimators
(ELSEVIER SCIENCE BV, 2011)
We give a general matrix formula for computing the second-order skewness of maximum likelihood estimators. The formula was firstly presented in a tensorial version by Bowman and Shenton (1998). Our matrix formulation has ...
Likelihood ratio (razón de verosimilitud): definición y aplicación en Radiología
(Sociedad Argentina de Radiologia, 2017)
The properties of a diagnostic test such as sensitivity, specificity and predictive values (positive and negative) are well known. Likelihood ratios are an alternative for summarising diagnostic accuracy, yet providing a ...
Second-order biases of maximum likelihood estimates in overdispersed generalized linear models
(2001)
In this paper, we derive general formulae for second-order biases of maximum likelihood estimates in overdispersed
generalized linear models, thus generalizing results by Cordeiro and McCullagh (J. Roy. Statist. Soc. Ser. ...
Likelihood ratio (razón de verosimilitud): definición y aplicación en Radiología
(Sociedad Argentina de Radiologia, 2017)
The properties of a diagnostic test such as sensitivity, specificity and predictive values (positive and negative) are well known. Likelihood ratios are an alternative for summarising diagnostic accuracy, yet providing a ...
DIAGNOSTIC TECHNIQUES OF LOCAL INFLUENCE IN SPATIAL ANALYSIS OF SOYBEAN YIELD
(SOC BRASIL ENGENHARIA AGRICOLA, 2011)
Modeling of spatial dependence structure, concerning geoestatistics approach, is an indispensable tool for fixing parameters that define this structure, applied on interpolation of values in places that are not sampled, ...