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Master's Dissertation
DOI
https://doi.org/10.11606/D.104.2021.tde-07052021-141327
Document
Author
Full name
Tainá Santana Caldas
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2021
Supervisor
Committee
Diniz, Carlos Alberto Ribeiro (President)
Paraíba, Carolina Costa Mota
Viola, Márcio Luis Lanfredi
Title in Portuguese
Distribuições combinadas
Keywords in Portuguese
Algoritmo EM
Distribuição de Cauchy
Distribuição Gucumatz
Distribuição normal
Abstract in Portuguese
Propõe-se uma possível nova linha de pesquisa em que se combinam distribuições. Distribuições combinadas são uma alternativa para ajuste de dados contínuos que apresentam comportamentos probabilísticos distintos. Desenvolve-se uma distribuição combinada denominada Gucumatz, composta pelas distribuições Normal e Cauchy simétricas. Estuda-se algumas propriedades desta distribuição, realiza-se estimação por máxima verossimilhança de dados aumentados (Algoritmo EM), desenvolve-se modelo de regressão e estudos de simulações. Um conjunto de dados reais é ajustado com utilização da distribuição Gucumatz
Title in English
Combined Distributions
Keywords in English
Cauchy distribution
EM Algorithm
Gucumatz distribution
Normal distribution
Abstract in English
It is proposed a possible new line of research in which distributions are combined. Combined distributions are an alternative for adjusting continuous data that present different probabilistic behaviors. A combined distribution called Gucumatz is developed, composed of the symmetrical Normal and Cauchy distributions. Some properties of this distribution are studied, maximum likelihood estimation of augmented data is performed (EM Algorithm), regression model and simulation studies are developed. A set of real data is adjusted using the Gucumatz distribution.
 
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Publishing Date
2021-05-07
 
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