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Bayesian Exponential Random Graph Models with Nodal Random Effects

Authors: 

S. Thiemichen, Nial Friel, A.Caimo, G. Kauermann

Publication Type: 
Refereed Original Article
Abstract: 
We extend the well-known and widely used Exponential Random Graph Model (ERGM) by including nodal random effects to compensate for heterogeneity in the nodes of a network. The Bayesian framework for ERGMs proposed by Caimo and Friel (2011) yields the basis of our modelling algorithm. A central question in network models is the question of model selection and following the Bayesian paradigmwefocusonestimatingBayesfactors. Todosowedevelopanapproximate but feasible calculation of the Bayes factor which allows one to pursue model selection. Two data examples and a small simulation study illustrate our mixed model approach and the corresponding model selection.
Digital Object Identifer (DOI): 
10.1016/j.socnet.2016.01.002
Publication Status: 
Published
Publication Date: 
02/01/2016
Journal: 
Social Networks
Volume: 
45
Pages: 
11-28
Institution: 
National University of Ireland, Dublin (UCD)
Open access repository: 
No
Publication document: