 We assume that we have no initial information distinguishing the clusters, which is captured by the symmetric prior formula_62.Here formula_37 denotes the Dirichlet distribution and formula_64 denotes a vector of length formula_52 where each element is 1.We further assign independent and identical prior distributions formula_66 to each of the cluster means, where formula_1 may be any parametric distribution with parameters denoted as formula_68.