FIG. 5.

Fraction of strong ties correctly identified by our algorithm for both heterogeneous (“he”) and homogeneous (“ho”) backbones, and homogeneous activities $a_i=0.3$, for all the nodes. The other parameters are $n=200, \gamma =0.95, \lambda =0.9$, and $\mu =0.1$. Three cases for the backbone are examined: all the nodes have the same low-degree $d_i=2$ (ho-low, dashed); all the nodes have the same high-degree $d_i=8$ (ho-high, dotted); and half the nodes have $d_i=2$ and half have $d_i=8$ (he, colored). For the last case of heterogeneous degrees, the TPR curve is plotted with respect to links between nodes with low degree (blue), links between nodes of different degree (orange), and links between nodes with high degree (green). Only one FDR curve is plotted for all the cases, since they are practically indistinguishable (he, red).