Gottard, Anna; Rampichini, Carla - In: Statistics & Probability Letters 77 (2007) 3, pp. 312-318
In this paper, we propose a way to incorporate multilevel models within graphical models. We introduce three types of nodes for chain graphs to represent (1) individual within clusters, (2) clusters as latent variables and (3) interactive effects. In this way, the chain graph shows both the...