EVENTO
Exploring Tolerance Selection and Multifidelity Techniques in an Approximate Bayesian Computation Framework
Tipo de evento: Defesa de Dissertação de Mestrado
Statistical inference is essential for many scientific problems. Simulating parameter values or the models that generated a given data set is often a complex task. The Bayesian paradigm offers a flexible and robust framework for addressing these issues. In many instances, Bayesian inference necessitates the computation of the likelihood function, which represents the probability of obtaining the observed data given a set of parameter values.However, calculating the likelihood function can be extremely challenging.There is a diverse array of tools dedicated to parameter estimation and model selection processes. One category of inference techniques that operates independently of the likelihood is known as approximate Bayesian computation (ABC), which eliminates the need to explicitly calculate a likelihood function. The fundamental premise of ABC methods is to provide an approximation of the posterior distribution using samples drawn from the prior distribution. However, ABC algorithms are computationally expensive due to the requirement for a largenumber of model simulations. This work focuses on the analysis of tolerance techniques and the application of the multifidelity process to achieve computational gains without compromising accuracy, utilizing the ABC methodology in epidemiological problems.Para assistir acesse: meet.google.com/iei-jjuv-inm
Data Início: 30/08/2024 Hora: 10:00 Data Fim: 30/08/2024 Hora: 12:00
Local: LNCC - Laboratório Nacional de Computação Ciêntifica - Videoconferência
Aluno: Graziele Daiana Sena de Sousa - - LNCC
Orientador: Regina Célia Cerqueira de Almeida - Laboratório Nacional de Computação Científica - LNCC Renato Simões Silva - Laboratório Nacional de Computação Científica - LNCC
Participante Banca Examinadora: Alvaro Luiz Gayoso de Azeredo Coutinho - Universidade Federal do Rio de Janeiro - COPPE/UFRJ Marcio Rentes Borges - Laboratório Nacional de Computação Científica - LNCC Renato Simões Silva - Laboratório Nacional de Computação Científica - LNCC Wellington Betencurte da Silva - - UFES
Suplente Banca Examinadora: Marcelo Trindade dos Santos - Laboratório Nacional de Computação Científica - LNCC
