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Degradation modeling for reliability analysis with time-dependent structure based on the inverse gaussian distribution
(Universidade Federal de São Carlos, 2017-04-07)
Conventional reliability analysis techniques are focused on the occurrence of failures over
time. However, in certain situations where the occurrence of failures is tiny or almost null, the
estimation of the quantities ...
Comparing two populations using Bayesian Fourier series density estimation
(Universidade Federal de São Carlos, 2017-04-12)
Given two samples from two populations, one could ask how similar the populations are, that is,
how close their probability distributions are. For absolutely continuous distributions, one way
to measure the proximity of ...
Programação linear aplicada a estatística
(Universidade Federal de São Carlos, 2017-11-27)
Determine probabilities for events where we have few information or intervals for probabilities is not so simple. For this we will develop concepts of linear programming, which allows us to solve, in a certain way, the ...
Modeling based on a reparameterized Birnbaum-Saunders distribution for analysis of survival data
(Universidade Federal de São Carlos, 2017-01-09)
In this thesis we propose models based on a reparameterized Birnbaum-Saunder (BS) distribution
introduced by Santos-Neto et al. (2012) and Santos-Neto et al. (2014), to analyze survival data.
Initially we introduce the ...
Inferência em modelos de mistura via algoritmo EM estocástico modificado
(Universidade Federal de São Carlos, 2017-06-02)
We present the topics and theory of Mixture Models in a context of maximum likelihood and Bayesian inferece. We approach clustering methods in both contexts, with emphasis on the stochastic EM algorithm and the Dirichlet ...
Modelagens estatística para dados de sobrevivência bivariados : uma abordagem bayesiana
(Universidade Federal de São Carlos, 2017-03-31)
The frailty models are used to model the possible associations between survival times. Another alternative developed for modeling the dependence between multivariate data is the use of models based on copulas functions.
In ...
Modelo de regressão para dados binários com mistura de funções de ligação
(Universidade Federal de São Carlos, 2017-02-08)
A regression model for binary data with mixture of four link functions (logit, probit, complementary
log log and Stukel) is shown and these functions are particular cases of the model. The
frequentist estimation procedure ...
Distribuições preditiva e implícita para ativos financeiros
(Universidade Federal de São Carlos, 2017-06-01)
We present two different approaches to obtain a probability density function for the
stock?s future price: a predictive distribution, based on a Bayesian time series model, and
the implied distribution, based on Black & ...
Controle de sistemas não-Markovianos.
(Universidade Federal de São Carlos, 2017-09-13)
In this thesis, we present a concrete methodology to calculate the epsilon-optimal controls for non-Markovian stochastic systems. A pathwise analysis and the use of the discretization structure proposed by Leão and Ohash ...
Estimação de funções do redshift de galáxias com base em dados fotométricos
(Universidade Federal de São Carlos, 2017-09-18)
In a substantial amount of astronomy problems, we are interested in estimating values assumed of some unknown quantity z ∈ R, for many function g, based on covariates x ∈ R^d. This is made using a sample (X1,Z1), ... ...