Before revision:  We define a statistical model describing the joint growth of the network and the partitioning of nodes into homology classesunder the constraint of a stochastic class-expansion/innovation model based on the "Chinese restaurant process", and we study this model through a combined mean-field and simulation approach.
After revision:  We define a statistical model describing the joint growth of the network and the partitioning of nodes into classes, which is studied through a combined mean-field and simulation approach.