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Uma modificação da extensão do algoritmo AID para modelos lineares generalizados usando reamostragem Bootstrap
(Universidade Federal de São Carlos, 2006-03-03)
One of the most frequently situation found by researchers is to find groups of similar individuals. The cluster analysis is a set of statistical techniques that identify mutually exclusive subgroups or classes over ...
Modelos de regressão logística clássica, Bayesiana e redes neurais para Credit Scoring
(Universidade Federal de São Carlos, 2008-02-15)
Important advances have been achieved in the granting of credit, however, the problem of identifying good customers for the granting of credit does not provide a definitive solution. Several techniques were presented and ...
Análise de dados longitudinais para variáveis binárias
(Universidade Federal de São Carlos, 2009-03-05)
The objective of this work is to present techniques of regression analysis for longitudinal data when the response variable is binary. Initially, there is a review of generalized linear models, marginal models, transition ...
Regiões de incerteza para a curva ROC em testes diagnósticos
(Universidade Federal de São Carlos, 2009-03-03)
Diagnostic tests are methods capable of indicating the presence or absence of a disease, with a probability of error. The performance of a diagnostic test can be verified by some indicator, as: the specificity, the sensitivity ...
Estimação de escores binomiais correlacionados: uma aplicação em Credit Scoring
(Universidade Federal de São Carlos, 2008-06-09)
For the most part of modelings in the credit risk area, the most widely used model is the credit scoring, and as the main statistical technique, the binary logistic regression, used to determine whether a customer is a ...
Utilização de técnicas bayesianas em modelos de regressão de Poisson para dados de contagem longitudinais e dados de contagem com medidas repetidas apresentando excesso de zeros
(Universidade Federal de São Carlos, 2008-06-09)
In medical and biological researches we often .nd count data. For longitudinal count data, usual Poisson regression models, assuming independence among observations, are not applicable because of the correlation of these ...
Uso de métodos clássicos e bayesianos em modelos de regressão beta
(Universidade Federal de São Carlos, 2007-05-18)
This work involves a study of a regression model appropriated for situations which the response variable is measured in a continuous scale in the (0, 1) interval, as, for instance, taxes or proportions. The developed ...
Modelo de regressão com erros normais assimétricos: uma abordagem bayesiana
(Universidade Federal de São Carlos, 2005-12-13)
The statistical analysis of the continuous data set has been developed in most cases for normal models, specially, in the linear and nom linear models context. In the simple linear regression models, even accepting as ...
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, ...
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), ...