Gómez, Héctor W. - Resultados de la búsqueda - Depósito Digital de Documentos de la UAB

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Resultados globales: 7 registros encontrados en 0.02 segundos.
Artículos, Encontrados 7 registros

Artículos	Encontrados 7 registros

20 p, 452.1 KB

Discrete generalized half-normal distribution and its applications in quantile regression / Gallardo, Diego (Universidad de Atacama, Copiapó (Xile). Departamento de Matemática) ; Gómez-Déniz, Emilio (Universidad de Las Palmas de Gran Canaria. Departamento de Métodos Cuantitativos en Economía y Gestión) ; Gómez, Héctor W. (Universidad de Antofagasta (Xile). Departamento de Matemáticas)
A new discrete two-parameter distribution is introduced by discretizing a generalized half-normal distribution. The model is useful for fitting overdispersed as well as underdispersed data. The failure function can be decreasing, bathtub shaped or increasing. [...]
2020 - DOI (Digital Object Identifier)

10.2436/20.8080.02.102
SORT : statistics and operations research transactions, Vol. 44 Núm. 2 (July-December 2020) , p. 265-284 (Articles)

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22 p, 638.2 KB

The Pareto IV power series cure rate model with applications / Gallardo, Diego (Universidad de Atacama (Copiapó, Xile). Departamento de Matemática) ; Gómez, Yolanda (Universidad de Atacama (Copiapó, Xile). Departamento de Matemática) ; Arnold, Barry C. (University of California. Statistics Department) ; Gómez, Héctor W. (Universidad de Antofagasta (Antofagasta, Xile). Departamento de Matemáticas)
Cutaneous melanoma is thought to be triggered by intense, occasional exposure to ultraviolet radiation, either from the sun or tanning beds, especially in people who are genetically predisposed to the disease. [...]
2017 - DOI (Digital Object Identifier)

10.2436/20.8080.02.61
SORT : statistics and operations research transactions, Vol. 41 Núm. 2 (July-December 2017) , p. 297-318 (Articles)

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22 p, 237.6 KB

Likelihood-based inference for the power regression model / Martínez-Flórez, Guillermo (Universidad de Córdoba. Departamento de Matemáticas) ; Bolfarine, Heleno (Universidade de São Paulo. Departamento de Estadística) ; Gómez, Héctor W. (Universidad de Antofagasta (Antofagasta, Xile). Departamento de Matemáticas)
In this paper we investigate an extension of the power-normal model, called the alpha-power model and specialize it to linear and nonlinear regression models, with and without correlated errors. Maximum likelihood estimation is considered with explicit derivation of the observed and expected Fisher information matrices. [...]
2015
SORT : statistics and operations research transactions, Vol. 39 Núm. 2 (July-December 2015) , p. 187-208 (Articles)

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16 p, 308.4 KB

A new class of Skew-Normal-Cauchy Distribution / Arrué, Jaime (Universidad de Antofagasta (Antofagasta, Xile). Departamento de Matemáticas) ; Gómez, Héctor W. (Universidad de Antofagasta (Antofagasta, Xile). Departamento de Matemáticas) ; Salinas, Hugo S. (Universidad de Atacama (Copiapo, Xile). Departamento de Matemáticas) ; Bolfarine, Heleno (Universidade de São Paulo. Departamento de Estadística)
In this paper we study a new class of skew-Cauchy distributions inspired on the family extended two-piece skew normal distribution. The new family of distributions encompasses three well known families of distributions, the normal, the two-piece skew-normal and the skew-normal-Cauchy distributions. [...]
2015
SORT : statistics and operations research transactions, Vol. 39 Núm. 1 (January-June 2015) , p. 35-50 (Articles)

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16 p, 162.7 KB

An extension of the slash-elliptical distribution / Rojas, Mario A. (Universidad de Antofagasta (Antofagasta, Xile). Departamento de Matematicas) ; Bolfarine, Heleno (Universidad de Sao Paulo. Departamento de Estatística) ; Gómez, Héctor W. (Universidad de Antofagasta (Antofagasta, Xile). Departamento de Matematicas)
This paper introduces an extension of the slash-elliptical distribution. This new distribution is generated as the quotient between two independent random variables, one from the elliptical family (numerator) and the other (denominator) a beta distribution. [...]
2014
SORT : statistics and operations research transactions, Vol. 38 Núm. 2 (July-December 2014) , p. 215-230

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10 p, 158.9 KB

A note on the Fisher information matrix for the skew-generalized-normal model / Arellano-Valle, Reinaldo B. (Pontificia Universidad Católica de Chile. Departamento de Estadística) ; Gómez, Héctor W. (Universidad de Antofagasta (Chile). Departamento de Matemáticas) ; Salinas, Hugo S. (Universidad de Atacama (Chile). Departamento de Matemática)
In this paper, the exact form of the Fisher information matrix for the skew-generalized normal (SGN) distribution is determined. The existence of singularity problems of this matrix for the skewnormal and normal particular cases is investigated. [...]
2013
SORT : statistics and operations research transactions, Vol. 37, Núm. 1 (January-June 2013) , p. 19-28

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10 p, 87.7 KB

A note on the likelihood and moments of the skew-normal distribution / Martínez, Eliseo H. (Universidad de Antofagasta) ; Varela, Héctor (Universidad de Antofagasta) ; Gómez, Héctor W. (Universidad de Atacama (Chile)) ; Bolfarine, Heleno (Universidad de Sao Paulo)
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 seems to greatly simplify moments computation. [...]
2008
SORT : statistics and operations research transactions, Vol. 32, Núm. 1 (January-June 2008) , p. 57-66

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Vea también: autores con nombres similares
1	Gomez, H.A.
1	Gómez, Henry L.
1	Gómez, Hernando
1	Gómez, Humberto

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