Table 2 Descriptive measures per network.

From: Missing the mark? Identifying child sexual abuse material forum structure and key-players based on public replies and private messaging networks

Network

Order

Size

No. components

Users in main (weak) component

 

Total degree

Centralisation

Avg. path length

Diameter

Global transitivity

Strong

Weak

Total

Percentage

Density

Geometric mean (SD)

Median (MAD)

In-degree

Out-degree

Forum A

 Public replies

23,120

106,779

14,728

29

23,060

99.7

0.0002

2.72 (3.21)

2.00 (1.00)

0.05

0.05

4.06

67

0.04

 Private messaging

12,279

29,732

6,877

233

11,778

95.9

0.0002

2.07 (2.57)

2.00 (1.00)

0.05

0.04

5.70

86

0.02

 Flattened

28,364

130,939

16,543

62

28,234

99.5

0.0002

2.67 (3.18)

2.00 (1.00)

0.05

0.04

4.25

98

0.04

Forum B

 Public replies

15,491

174,192

7120

16

15,459

99.8

0.0007

4.57 (4.44)

3.00 (2.00)

0.11

0.06

3.73

49

0.11

 Private messaging

3752

19,089

1349

40

3650

97.3

0.0014

3.67 (3.44)

3.00 (2.00)

0.13

0.12

5.58

142

0.06

 Flattened

15,721

185,012

7074

15

15,691

99.8

0.0008

4.65 (4.54)

2.00 (2.00)

0.12

0.07

3.75

59

0.11

  1. Order = number of nodes; Size = number of edges; No. components = number of components; MAD = median absolute deviation; Avg. path length = average path length; Diameter = longest distance between any two nodes. The global transitivity index was calculated with undirected networks for all networks and layers.
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