%0 Report
%9 EIC working paper series
%A Crimaldi, Irene
%A Del Vicario, Michela
%A Morrison, Greg
%A Quattrociocchi, Walter
%A Riccaboni, Massimo
%D 2015
%F eprints:2667
%I IMT Institute for Advanced Studies Lucca
%K JEL codes: C13, C18, O35, Z13 - Keywords: social network, bipartite network, preferential attachment, homophily, triadic closure, transitivity. 
%N 3
%T Homophily and Triadic Closure in Evolving Social Networks
%U http://eprints.imtlucca.it/2667/
%X We present a new network model accounting for homophily and triadic closure in the evolution of social networks. In particular, in our model, each node is characterized by a number of features and the probability of a link between  two nodes depends on common features. The bipartite network of the actors and features evolves according to a dynamics that depends on three parameters that respectively regulate the preferential attachment in the transmission  of the features to the nodes, the number of new features per node, and the power-law behavior of the total number of observed features. We provide theoretical results and statistical estimators for the parameters of the model.  We validate our approach by means of simulations and an empirical analysis of a network of scientifc collaborations.
%Z This working paper is a preliminary version of the article published in Interdisciplinary Information Sciences. ISSN 1340-9050