Distributions of four basic closed triples in the Epinions social network and the model.

<p>Distributions of closed triples corresponding to (a) , (b) , (c) , and (d) loops in the Epinions social network (black squares) and in the simulated network based on the model (red circles). Analytic treatment (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0050702#pone.0050702.e337" target="_blank">Eqs. (30)</a> and <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0050702#pone.0050702.e352" target="_blank">(31)</a>) suggests a scaling behavior with an exponent , as shown by the dash lines. Data points are averages over the logarithmic bins of the , , and , respectively.