Table 5. The basic topological features of twelve example networks.

Network	N	M	C	r	H
C. elegans	297	2148	0.308	−0.163	1.801
NS	1589	2742	0.791	0.462	2.011
FWEW	69	880	0.552	−0.298	1.275
FWFW	128	2075	0.335	−0.112	1.237
USAir	332	2126	0.749	−0.208	3.464
Jazz	198	2742	0.633	0.02	1.395
Tap	1373	6833	0.557	0.579	1.644
Power	4941	6594	0.107	0.003	1.45
Metabolic	453	2025	0.655	−0.226	4.485
Yeast	2375	11693	0.388	0.454	3,476
Router	5022	6258	0.033	−0.138	5.503
PB	1222	16724	0.36	−0.221	2.971

N and M are the total numbers of nodes and links, respectively. C and r are clustering coefficient and assortative coefficient, respectively. H is the degree heterogeneity, defined as , where 〈k〉 denotes the average degree¹⁹.