Table 5: Parameters for eight scale-free networks built using different numbers of nodes and average vertex degrees.

Barabási and Albert’ [2] scale-free networks
DescriptionSFN SFN SFN SFN SFN SFN SFN SFN
no. 1no. 2no. 3no. 4no. 5no. 6no. 7no. 8

Number of nodes1,0001,0002,0002,00010,00010,00020,00020,000
Number of edges2,0004,0004,0008,00020,00040,00040,00080,000
Average vertex degrees48484848
Exponent of power-law distribution2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.4
Average clustering coefficient 0.02 0.03 0.01 0.02 0.00 0.00 0.00 0.00
Average degree of separation 4.2 3.2 4.4 3.4 5.1 3.9 5.3 4.1