CiteULike tag–item
This is the bipartite network of tags and publications in CiteULike. Each edge
represents a tag assignment that connects a tag and a publication. Since the
same tag can be assigned to a single publication by multiple users, the network
contains multiple edges. The edges are annotated with the creation time of the
tag assignment.
Metadata
Statistics
Size  n =  885,046

Left size  n_{1} =  153,277

Right size  n_{2} =  731,769

Volume  m =  2,411,819

Unique edge count  m̿ =  2,338,554

Wedge count  s =  21,880,206,884

Claw count  z =  1,213,193,044,873,518

Cross count  x =  5.511 04 × 10^{19}

Square count  q =  383,860,055

4Tour count  T_{4} =  90,596,413,384

Maximum degree  d_{max} =  189,295

Maximum left degree  d_{1max} =  189,295

Maximum right degree  d_{2max} =  1,646

Average degree  d =  5.450 16

Average left degree  d_{1} =  15.735 0

Average right degree  d_{2} =  3.295 87

Fill  p =  2.084 95 × 10^{−5}

Average edge multiplicity  m̃ =  1.031 33

Size of LCC  N =  857,460

Diameter  δ =  24

50Percentile effective diameter  δ_{0.5} =  3.912 25

90Percentile effective diameter  δ_{0.9} =  5.970 78

Median distance  δ_{M} =  4

Mean distance  δ_{m} =  4.768 26

Gini coefficient  G =  0.707 021

Balanced inequality ratio  P =  0.226 626

Left balanced inequality ratio  P_{1} =  0.126 018

Right balanced inequality ratio  P_{2} =  0.303 091

Relative edge distribution entropy  H_{er} =  0.847 063

Power law exponent  γ =  2.325 35

Tail power law exponent  γ_{t} =  2.331 00

Degree assortativity  ρ =  −0.083 370 6

Degree assortativity pvalue  p_{ρ} =  0.000 00

Spectral norm  α =  436.053

Algebraic connectivity  a =  0.001 147 49

Spectral separation  λ_{1}[A] / λ_{2}[A] =  1.430 65

Controllability  C =  645,431

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]

Kevin Emamy and Richard Cameron.
CiteULike: A researcher's social bookmarking service.
Ariadne, (51), 2007.
