Search
Now showing items 1-10 of 61
Modelos dinâmicos de resposta binária para dados em painel
(Universidade Federal de São Carlos, 2008-06-06)
A summary of the state of the art relative to regression models for binary response variable and panel data is presented in this work. Those models may include efects from several sources: specific variables of interest, ...
Modelagem de fraude em cartão de crédito
(Universidade Federal de São Carlos, 2008-09-02)
The transactions volume increase brought the fraud increase, which result in a annual loss of billions of reais to all .nancial institutions in the world. Therefore, it.s very important the development of detection methods ...
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 ...
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 ...
Modelos para dados de contagem: um estudo sobre o número de ovos do mosquito Aedes aegypti
(Universidade Federal de São Carlos, 2007-07-22)
In this work we considered four types of models for count data: the
Poisson model, the Negative Binomial Model and variations of these
models for count inflated of zeros (ZIP and ZINB).
Information on the number of put ...
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, ...
Uso de métodos bayesianos em testes de vida acelerados no controle da qualidade de produtos industriais
(Universidade Federal de São Carlos, 2006-03-03)
In this work, we introduce a Bayesian approach for quality control of industrial products, assuming units in test under stress levels higher than the usual level. We assume di¤erent distributions for the lifetimes of the ...
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), ...
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 ...