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Now showing items 81-90 of 104
Modelos de sobrevivência com base nas distribuições geométrica e exponencial
(Universidade Federal de São Carlos, 2013-02-01)
In this dissertation we propose four models to model lifetime data. The fist family of distribution is called Exponentiated Complementary Exponential Geometric distribution (ECEG) and it is obtained by exponentiation of ...
Modelo de regressão de valor extremo para dados agrupados
(Universidade Federal de São Carlos, 2013-03-11)
One of the distributions used to model extremal events is the type I extremevalue distribution (Gumbel distribution). The usual extreme-value regression model requires independent observations. In this work, using generalized ...
Verificação da performance de modelos APARCH assimétricos aplicados a dados financeiros
(Universidade Federal de São Carlos, 2013-04-01)
The volatility of financial assets changes over time, indicating the specification of regime change in volatility models. Furthermore, the presence of asymmetry in the returns of the financial market has been recognized ...
Análise estatística do modelo de Nelson e Siegel
(Universidade Federal de São Carlos, 2013-03-21)
The present paper studies the yield curve, an important tool for financial decisions, due to its fundamental role in the implementation and evaluation of monetary policies by the central banks. It also shows market ...
Extensões dos modelos de sobrevivência referente a distribuição Weibull
(Universidade Federal de São Carlos, 2014-03-07)
In this dissertation, two models of probability distributions for the lifetimes until the occurrence of the event produced by a specific cause for elements in a population are reviewed. The first revised model is called ...
Distribuição de Poisson bivariada aplicada à previsão de resultados esportivos
(Universidade Federal de São Carlos, 2014-04-23)
The modelling of paired counts data is a topic that has been frequently discussed in several threads of research. In particular, we can cite bivariate counts, such as the analysis of sports scores. As a result, in this ...
Comparação do desempenho de Modelos Lineares Generalizados (MLG) e Modelos Aditivos Generalizados (MAG) na predição de dados financeiros em credit score
(Universidade Federal de São Carlos, 2010-10-07)
This study aimed to present and compare the performance of two different methodologies for statistical modeling of financial data with dichotomous response, specifically exemplified by models of credit score as well as ...
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 ...
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 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 ...