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Modeling airport congestion contagion by heterogeneous SIS epidemic spreading on airline networks

Fig 2

The probability density functions of the weight of a link (a) and f_S(x) of the strength S of a node (b) in network G₂ (blue points) and G₃ (red points).

Horizontal and vertical axes are presented in logarithmic scale. The horizontal axis is split into 20 bins, each with the same bin size in the linear scale. The probability density (f_S(x)) at a given bin x is equal to the fraction of the links (nodes) whose weight (strength) falls within the bin normalized by the bin size. Both link weight and node strength have, respectively, a higher average in G₃ and higher coefficient of variation (the ratio of standard deviation over the average) in G₂.

doi: https://doi.org/10.1371/journal.pone.0245043.g002