Figure 7
From: The Statistical Analysis of Top Hubs in Growing Geographical Networks with Optimal Policy
The average degree over different spatial positions. (a–d) Respectively correspond to Hub-1 ~ Hub-4 at different α, where α = 1.0, 1.5, 2.0 respectively for star lines, triangle lines and circle lines. The average degrees at different positions for Hub-1 and Hub-2 grow with α, while for Hub-3 and Hub-4 they rise first, then descend.
