Table 1 Properties of empirical datasets.

Properties of empirical datasets.. List of real-world social networks used in this study, their main properties, and estimated model parameters. N is the number of nodes in the network, 〈k〉 is the average degree, na is the fraction of nodes in the smaller attribute group, HIa = (Taana)/(1 − na) and HIb = (Tbbnb)/(1 − nb) are the Coleman homophily indices (60) of the groups, sa(0) and sb(0) are the estimates of the bias parameters when c = 0 [equal to observed homophily, sa(0) = oa and sb(0) = ob], and sa(1) and sb(1) are the estimates when c = 1. saABC and sbABC are the mean ABC estimates for sa and sb.

abNknaHIaHIbsa(0)/sb(0)sa(1)/sb(1)saABCsbABC
Facebook2009200814,25142.4947.2%0.7680.7940.889/0.8930.666/0.6600.630.70
PolblogsLiberalConservative1,22427.3148.0%0.8130.8100.909/0.9020.665/0.6640.8040.861
SchoolFemaleMale2124.1249.1%0.3080.2130.656/0.6050.595/0.6020.5530.625
Last.fmMaleFemale188,6725.4931.7%0.1680.1060.621/0.5400.588/0.5500.550.588
DirectorsFemaleMale2,4126.1235.8%0.192−0.3820.658/0.3210.554/0.3720.5940.36