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01 06 im noticia PalestrasEstatísticaTítulo: Diagnostic Methods for Multiregression Dynamic Models

Palestrante: Lilia Carolina Carneiro da Costa (UFBA)
Data: 02/06/2021
Horário: 15:30h
Local: Transmissão online

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Resumo: A Multiregression Dynamic Model (MDM) is a class of multivariate time series that represents various dynamic causal processes in a graphical way. One of the advantages of this class is that, in contrast to many other Dynamic Bayesian Networks, the hypothesised relationships accommodate conditional conjugate inference. We demonstrate how straightforward it is to search over all possible connectivity networks with dynamically changing intensity of transmission to find the Maximum a Posteriori Probability (MAP) model within this class. We proceed to show how diagnostic methods, analogous to those defined for static Bayesian Networks, can be used to suggest embellishment of the model class to extend the process of model selection. All methods are illustrated using simulated and real resting-state functional Magnetic Resonance Imaging (fMRI) data.

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