“Coding the BYM2 model for disconnected graphs in Stan” 

Relatrice: prof.ssa Mitzi Morris, Columbia University

Abstract

In [A note on intrinsic Conditional Autoregressive models for disconnected graphs](https://arxiv.org/abs/1705.04854), Freni-Sterrantino et.al. show how to implement the BYM2 model for use with areal data where the graph structure of the map is not fully connected. In this talk, we present an implementation of this proposal in Stan which illustrates use of the Penalized Complexity framework.  Finally, we discuss the challenges of extending this to more complicated spatio-temporal data.