Luis Enrique Nieto-Barajas (ITAM, México)
11 December 2014 @ 12:00
- Past event
Spatial gamma processes in disease mapping
In this talk we will present Bayesian models based on Markov random fields of gamma type to model the relative risk in disease mapping data. The spatial gamma processes allow for different spatial dependence among neighbours. We describe the properties of ths processes and use them as prior distributions to carry out Bayesian inference. We extend the model in two ways: to include covariates, and to allow for excess of zeroes in the data. We finally illustrate the models with health data of Mexico.