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Modelos para dados de sobrevivência na presença de diferentes esquemas de ativação baseados na distribuição geométrica
(Universidade Federal de São Carlos, 2013-04-08)
In this thesis new families of survival distributions are proposed. Those distributions are derived by assuming a latent activation structure to explain the occurrence of the event of interest. In general, the competitive ...
Dependência entre perdas em risco operacional
(Universidade Federal de São Carlos, 2014-02-12)
In this work, we present and discuss the operational risk in the financial institutions, Basel Accord II, the structure of dependence between cumulative operational losses, a tool for modeling this dependence (theory of ...
Modelo de mistura com dependência Markoviana de primeira ordem
(Universidade Federal de São Carlos, 2014-09-12)
We present the mixture model with first order dependence, MMM(1). This model corresponds to a redefinition of the hidden Markov model (HMM) where a non observable variable is used to control the mixture. The usual mixture ...
Modelos de regressão bivariados Bernoulli : exponencial
(Universidade Federal de São Carlos, 2013-04-05)
Estimação bayesiana para medidas de desempenho de testes diagnósticos
(Universidade Federal de São Carlos, 2006-01-05)
In the medical area, diagnostic tests are used to classify a patient as positive or
negative with respect to a given disease. There are simple and more elaborate tests, each
one with a speci9ed rate of misclassi9cation.
To ...
Modelos HMM com dependência de segunda ordem: aplicação em genética
(Universidade Federal de São Carlos, 2006-02-20)
(See full text for download)
Ponderação de modelos com aplicação em regressão logística binária
(Universidade Federal de São Carlos, 2006-04-18)
This work consider the problem of how to incorporate model selection uncertainty
into statistical inference, through model averaging, applied to logistic regression. It will
be used the approach of Buckland et. al. (1997), ...
Modelos de resposta ao item com função de ligação t-assimétrica
(Universidade Federal de São Carlos, 2007-04-20)
The Item Response Theory (IRT) is a set of mathematical models representing the probability of an individual to take a correct response of an item and its ability. The purpose of our research is to show the models formulated ...
Um novo estimador exponencial por partes da curva de sobrevivência: um estudo comparativo
(Universidade Federal de São Carlos, 2006-05-31)
In this work we revise the main basic concepts on survival analysis and reliability.
We present the most known nonparametric estimators of the survival function in the
presence of censured data. Their estimates are ...
Uma proposta para análise de dados com correlação espacial e temporal
(Universidade Federal de São Carlos, 2007-09-27)
In several research areas, the study of the occurrence of a phenomenon over a
period of time is very common. In this case, if we use the theory of Generalized Linear
Models to analyze the subject of interest, we ll have, ...