• Um modelo de risco proporcional dependente do tempo 

      Parreira, Daniela Ribeiro Martins (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Estatística - PPGEs, , 30/03/2007)
      Survival data analysis models is used to study experimental data where, normally, the variable "answer"is the time passed until an event of interest. Many authors do prefer modeling survival data, in the presence of ...
    • Modelo destrutivo com variável terminal em experimentos quimiopreventivos de tumores em animais 

      Zavaleta, Katherine Elizabeth Coaguila (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Estatística - PPGEs, , 12/04/2012)
      The chemical induction of carcinogens in chemopreventive animal experiments is becoming increasingly frequent in biological research. The purpose of these biological experiments is to evaluate the effect of a particular ...
    • Modelo logístico generalizado dependente do tempo com fragilidade 

      Milani, Eder Angelo (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Estatística - PPGEs, , 11/02/2011)
      Several authors have preferred to model survival data in the presence of covariates through the hazard function, a fact related to its interpretation. The hazard function describes as the instantaneous average of failure ...
    • Modelo Weibull modificado de longa duração 

      Oliveira, Cleyton Zanardo de (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Estatística - PPGEs, Câmpus São Carlos, 07/12/2011)
      When a group of patients is monitored until a pre-established date for observation of the recurrence time of an event, it is possible that, at the end of the monitoring period, a parcel of such group has not yet suffered ...
    • Modelos alternativos em filas M/G/1 

      Prado, Silvia Maria (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Estatística - PPGEs, Câmpus São Carlos, 26/11/2015)
      The main aim of this work is to develop alternative queuing models to M/ G/l, in which arrivals follow a Poisson process, the total number of customers on the system and the total number of service channels are unknown. ...
    • Modelos de regressão binomial correlacionada 

      Pires, Rubiane Maria (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Estatística - PPGEs, , 18/05/2012)
      In this thesis, a class of correlated binomial regression models is proposed. The model is based on the generalized binomial distribution proposed by Luceño (1995) and Luceño & Ceballos (1995). The regression structure is ...
    • Modelos de regressão bivariados Bernoulli : exponencial 

      Prado, Flávia Bolssone do (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Estatística - PPGEs, , 05/04/2013)
    • Modelos de regressão logística clássica, Bayesiana e redes neurais para Credit Scoring 

      Mendonça, Tiago Silva (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Estatística - PPGEs, , 15/02/2008)
      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 ...
    • Modelos de regressão PLS com erros heteroscedásticos 

      Morellato, Saulo Almeida (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Estatística - PPGEs, , 26/01/2010)
      Two problems related to Partial Least Squares method are considered in this work. Heteroscedastic errors and an asymmetrical error distribution. In the _rst part of this work a methodology is developed which allows, based ...
    • Modelos de resposta ao item com função de ligação t-assimétrica 

      Pinheiro, Alessandra Noeli Craveiro (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Estatística - PPGEs, , 20/04/2007)
      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 de séries temporais com coeficientes variando no tempo 

      Souza, Leandro Teixeira Lopes de (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Estatística - PPGEs, , 26/02/2009)
      In this work they are presented extensions of Auto Regressive and Auto Regressive Conditional Heteroscedasticity models with coefficients varying in time. These coefficients have been used as models for non stationary real ...
    • Modelos de sobrevivência bivariados baseados na cópula FGM : uma abordagem bayesiana 

      Suzuki, Adriano Kamimura (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Estatística - PPGEs, , 07/02/2012)
      In this work we present a Bayesian analysis for bivariate survival data in the presence of a covariate and censored observations. We propose a bivariate distribution for the bivariate survival times based on the ...
    • Modelos de sobrevivência com base nas distribuições geométrica e exponencial 

      Yamachi, Cíntia Yurie (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Estatística - PPGEs, , 01/02/2013)
      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 ...
    • Modelos de sobrevivência com fração de cura usando um termo de fragilidade e tempo de vida Weibull modificada generalizada 

      Calsavara, Vinicius Fernando (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Estatística - PPGEs, , 24/02/2011)
      In survival analysis, some studies are characterized by having a significant fraction of units that will never suffer the event of interest, even if accompanied by a long period of time. For the analysis of long-term data, ...
    • Modelos de sobrevivência com fração de cura via partição bayesiana 

      Gonzales, Jhon Franky Bernedo (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Estatística - PPGEs, , 30/05/2014)
      In general, models for survival data with a cure fraction relate the cure fraction with the covariates using different link functions, for example, the logit link function and do not consider the problem of selection of ...
    • Modelos de sobrevivência de longa-duração : uma abordagem unificada 

      Iritani, Mateus Rodrigues (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Estatística - PPGEs, , 13/06/2008)
      In survival analysis some studies show a meaningful cure rate after treatment followup, so considering standard survival models can not be appropriate. In this work is extended the long-term survival model proposed by Chen, ...
    • Modelos de sobrevivência na presença de eventos recorrentes e longa duração 

      Cobre, Juliana (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Estatística - PPGEs, , 05/03/2010)
      In this thesis it is proposed to analyze recurrent event data, recurrent event data with cure fraction and recurrent event data with censoring and competing causes. For the recurrent event data analysis it is proposed a ...
    • Modelos de volatilidade estatística 

      Ishizawa, Danilo Kenji (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Estatística - PPGEs, , 22/08/2008)
      In the financial market usually notices are taken of the shares sequentially over the time in order to characterize them a time series. However, the major interest is to forecast the behavior of these shares. Motivated by ...
    • Modelos dinâmicos de resposta binária para dados em painel 

      Silva, Eveliny Barroso da (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Estatística - PPGEs, , 06/06/2008)
      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, ...
    • Modelos estatísticos para LGD : uma visão clássica e bayesiana 

      Varga, Maria Clara Mecatte (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Estatística - PPGEs, , 28/03/2011)
      Every day in financial institution is common to nd customers who are unable to honor their commitments. When this occurs we say that the individual is in default. In a possible economic downturn the portfolio could su_er ...