Air traffic control
This network was constructed from the USA's FAA (Federal Aviation
Administration) National Flight Data Center (NFDC), Preferred Routes Database.
Nodes in this network represent airports or service centers and links are
created from strings of preferred routes recommended by the NFDC.
Metadata
Statistics
Size  n =  1,226

Volume  m =  2,615

Loop count  l =  2

Wedge count  s =  15,307

Claw count  z =  94,389

Cross count  x =  461,087

Triangle count  t =  326

Square count  q =  1,103

4Tour count  T_{4} =  74,868

Maximum degree  d_{max} =  37

Maximum outdegree  d^{+}_{max} =  24

Maximum indegree  d^{−}_{max} =  20

Average degree  d =  4.265 91

Fill  p =  0.001 739 77

Size of LCC  N =  1,226

Size of LSCC  N_{s} =  792

Relative size of LSCC  N^{r}_{s} =  0.646 003

Diameter  δ =  17

50Percentile effective diameter  δ_{0.5} =  5.524 77

90Percentile effective diameter  δ_{0.9} =  8.054 20

Median distance  δ_{M} =  6

Mean distance  δ_{m} =  6.097 86

Gini coefficient  G =  0.428 460

Balanced inequality ratio  P =  0.334 417

Outdegree balanced inequality ratio  P_{+} =  0.321 989

Indegree balanced inequality ratio  P_{−} =  0.342 639

Relative edge distribution entropy  H_{er} =  0.951 408

Power law exponent  γ =  1.905 32

Tail power law exponent  γ_{t} =  3.701 00

Tail power law exponent with p  γ_{3} =  3.701 00

pvalue  p =  0.208 000

Outdegree tail power law exponent with p  γ_{3,o} =  2.031 00

Outdegree pvalue  p_{o} =  0.000 00

Indegree tail power law exponent with p  γ_{3,i} =  3.411 00

Indegree pvalue  p_{i} =  0.044 000 0

Degree assortativity  ρ =  −0.015 202 8

Degree assortativity pvalue  p_{ρ} =  0.291 508

In/outdegree correlation  ρ^{±} =  +0.595 248

Clustering coefficient  c =  0.063 892 3

Directed clustering coefficient  c^{±} =  0.049 203 8

Spectral norm  α =  11.454 8

Operator 2norm  ν =  6.411 86

Cyclic eigenvalue  π =  5.248 33

Algebraic connectivity  a =  0.025 827 8

Spectral separation  λ_{1}[A] / λ_{2}[A] =  1.149 38

Reciprocity  y =  0.157 553

Nonbipartivity  b_{A} =  0.320 044

Normalized nonbipartivity  b_{N} =  0.013 871 1

Algebraic nonbipartivity  χ =  0.025 807 5

Spectral bipartite frustration  b_{K} =  0.001 641 08

Controllability  C =  364

Relative controllability  C_{r} =  0.296 900

Plots
Matrix decompositions plots
Downloads
References
[1]

Jérôme Kunegis.
KONECT – The Koblenz Network Collection.
In Proc. Int. Conf. on World Wide Web Companion, pages
1343–1350, 2013.
[ http ]

[2]

Federal Aviation Administration.
Air traffic control system command center.
http://www.fly.faa.gov/.
