Libimseti.cz
Libimseti.cz (also spelled Líbímseti.cz; from Czech Líbím se ti, "Do
you like me") is a Czech dating site. This is the network of ratings given by
users of Libimseti.cz to other users. The network is unipartite, directed, and
edges represent ratings on a scale from 1 to 10.
Metadata
Statistics
Size  n =  220,970

Volume  m =  17,359,346

Wedge count  s =  28,261,600,655

Claw count  z =  82,085,727,142,249

Cross count  x =  328,616,649,550,852,928

Triangle count  t =  69,115,603

Square count  q =  252,125,304,066

4Tour count  T_{4} =  2,130,083,301,436

Maximum degree  d_{max} =  33,389

Maximum outdegree  d^{+}_{max} =  25,042

Maximum indegree  d^{−}_{max} =  33,389

Average degree  d =  157.119

Fill  p =  0.000 355 524

Size of LCC  N =  220,970

Size of LSCC  N_{s} =  81,145

Relative size of LSCC  N^{r}_{s} =  0.367 222

Diameter  δ =  6

50Percentile effective diameter  δ_{0.5} =  2.383 02

90Percentile effective diameter  δ_{0.9} =  3.088 97

Mean distance  δ_{m} =  2.853 61

Gini coefficient  G =  0.710 031

Relative edge distribution entropy  H_{er} =  0.905 698

Power law exponent  γ =  1.267 38

Tail power law exponent  γ_{t} =  1.911 00

Degree assortativity  ρ =  −0.138 967

Degree assortativity pvalue  p_{ρ} =  0.000 00

In/outdegree correlation  ρ^{±} =  −0.053 936 3

Clustering coefficient  c =  0.007 336 70

Spectral norm  α =  1,127.41

Operator 2norm  ν =  1,091.14

Cyclic eigenvalue  π =  180.755

Spectral separation  λ_{1}[A] / λ_{2}[A] =  1.048 45

Reciprocity  y =  0.014 539 9

Nonbipartivity  b_{A} =  0.167 400

Normalized nonbipartivity  b_{N} =  0.133 489

Negativity  ζ =  0.478 986

Algebraic conflict  ξ =  0.335 197

Triadic conflict  τ =  0.523 841

Spectral signed frustration  φ =  0.000 537 773

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]

Jérôme Kunegis, Gerd Gröner, and Thomas Gottron.
Online dating recommender systems: The splitcomplex number approach.
In Proc. RecSys Workshop on Recomm. Syst. and the Soc. Web,
pages 37–44, 2012.

[3]

Lukáš Brožovský and Václav Petříček.
Recommender system for online dating service.
In Proc. Znalosti, pages 29–40, 2007.
