Graphics Reference
In-Depth Information
Figure 4-5:
This network shows the spread of a viral e-mail starting with
John. Statistics help identify some of the key nodes.
•
High degree
people are shown by node size. Vern and Abel distribute
e-mails widely.
•
Betweenness centrality
is represented by text size. John and Drew have
the highest betweenness centrality—and each is at the center of
respective halves of the network.
•
Closeness centrality
is represented by color. The central horizontal
spine—John, Tiny, and Drew—are the deepest blue.
•
Furthest away
is Yuko (purple, far right) as measured by closeness
centrality. Betweenness and degree do not differentiate between leaf
nodes, but closeness does.
• Note that Tiny has only two connections but is in a critical position
joining the two halves of the network.