Table 2 Summary of the graph-level metrics for the yearly snapshots of the Austrian pig trade network, 2015–2021.
From: Network analysis of pig movement data as an epidemiological tool: an Austrian case study
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | |
|---|---|---|---|---|---|---|---|
Number of edges | 126,092 | 119,554 | 115,602 | 109,350 | 105,618 | 106,917 | 100,327 |
Number of nodes | 27,938 | 26,752 | 25,348 | 23,860 | 22,609 | 22,578 | 21,667 |
Number of animals | 4,614,349 | 4,483,219 | 4,510,794 | 4,413,947 | 4,404,170 | 4,493,835 | 4,373,382 |
Number of farms | 27,498 | 26,268 | 24,909 | 23,667 | 22,109 | 22,163 | 21,263 |
Assortativity (degree) | −0.09 | −0.09 | \(-\)0.08 | \(-\)0.09 | −0.09 | −0.10 | −0.09 |
Assortativity (state) | 0.87 | 0.87 | 0.86 | 0.87 | 0.85 | 0.84 | 0.84 |
Assortativity (district) | 0.45 | 0.45 | 0.44 | 0.44 | 0.43 | 0.43 | 0.42 |
Average shortest path length | 10.1 | 8.8 | 10.7 | 7.1 | 8.0 | 6.2 | 6.2 |
Betweenness centrality | 0.01 | 0.01 | 0.03 | 0.01 | 0.01 | 0.00 | 0.01 |
Diameter | 29 | 27 | 28 | 23 | 22 | 19 | 25 |
Degree (total) | 0.01 | 0.01 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 |
Degree (in-) | 0.01 | 0.01 | 0.01 | 0.03 | 0.01 | 0.01 | 0.01 |
Degree (out-) | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 |
Edge density | \(5.7 \times 10^{-5}\) | \(5.8 \times 10^{-5}\) | \(6.2 \times 10^{-5}\) | \(6.5 \times 10^{-5}\) | \(6.8 \times 10^{-5}\) | \(6.9 \times 10^{-5}\) | \(7.1 \times 10^{-5}\) |
Global CC | \(4.4 \times 10^{-3}\) | \(3.9 \times 10^{-3}\) | \(4.3 \times 10^{-3}\) | \(4.3 \times 10^{-3}\) | \(4.7 \times 10^{-3}\) | \(4.5 \times 10^{-3}\) | \(5.4 \times 10^{-3}\) |
Size LSCC (No. nodes) | 558 | 646 | 964 | 210 | 498 | 127 | 168 |
Size LSCC (% of nodes) | 2.0% | 2.4% | 3.8% | 0.9% | 2.2% | 0.6% | 0.8% |
Size LWCC (No. nodes) | 27,144 | 25,957 | 24,504 | 22,966 | 21,807 | 21,933 | 20,904 |
Size LWCC (% of nodes) | 97.2% | 97.0% | 96.7% | 96.2% | 96.4% | 97.1% | 96.5% |
