TY  - RPRT
KW  - JEL codes: C13
KW  -  C18
KW  -  O35
KW  -  Z13 - Keywords: social network
KW  -  bipartite network
KW  -  preferential attachment
KW  -  homophily
KW  -  triadic closure
KW  -  transitivity. 
Y1  - 2015/05//
TI  - Homophily and Triadic Closure in Evolving Social Networks
AV  - public
UR  - http://eprints.imtlucca.it/2667/
PB  - IMT Institute for Advanced Studies Lucca
A1  - Crimaldi, Irene
A1  - Del Vicario, Michela
A1  - Morrison, Greg
A1  - Quattrociocchi, Walter
A1  - Riccaboni, Massimo
M1  - imt_eic_working_paper
N2  - 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.
N1  - This working paper is a preliminary version of the article published in Interdisciplinary Information Sciences. ISSN 1340-9050
ID  - eprints2667
EP  - 32
ER  -