This is the social network of Flickr users and their friendship connections.


Internal nameflickr-growth
Data source
AvailabilityDataset is available for download
Consistency checkDataset passed all tests
Online social network
Dataset timestamp 2008
Node meaningUser
Edge meaningFriendship
Network formatUnipartite, directed
Edge typeUnweighted, no multiple edges
Temporal data Edges are annotated with timestamps
ReciprocalContains reciprocal edges
Directed cyclesContains directed cycles
LoopsDoes not contain loops


Size n =2,302,925
Volume m =33,140,017
Wedge count s =23,342,941,288
Claw count z =83,140,847,127,775
Cross count x =252,648,787,555,767,328
Triangle count t =837,605,842
Square count q =712,355,262,231
4-Tour count T4 =5,792,259,539,552
Maximum degree dmax =34,174
Maximum outdegree d+max =26,367
Maximum indegree dmax =21,001
Average degree d =28.780 8
Fill p =6.248 75 × 10−6
Size of LCC N =2,173,370
Size of LSCC Ns =1,605,184
Relative size of LSCC Nrs =0.697 020
Diameter δ =23
50-Percentile effective diameter δ0.5 =4.804 35
90-Percentile effective diameter δ0.9 =6.886 64
Mean distance δm =5.459 41
Gini coefficient G =0.880 189
Relative edge distribution entropy Her =0.827 805
Power law exponent γ =2.017 38
Tail power law exponent γt =1.711 00
Degree assortativity ρ =−0.002 700 53
Degree assortativity p-value pρ =2.014 28 × 10−74
Clustering coefficient c =0.107 648
Spectral norm α =2,144.47
Operator 2-norm ν =1,127.13
Cyclic eigenvalue π =1,018.96
Reciprocity y =0.621 710
Non-bipartivity bA =0.705 937
Normalized non-bipartivity bN =0.001 780 25


Degree distribution

Cumulative degree distribution

Lorenz curve

Spectral distribution of the adjacency matrix

Spectral distribution of the normalized adjacency matrix

Spectral distribution of the Laplacian

Spectral graph drawing based on the adjacency matrix

Spectral graph drawing based on the normalized adjacency matrix

Hop distribution

In/outdegree scatter plot

Clustering coefficient distribution

Temporal distribution

Diameter/density evolution

Inter-event distribution

Matrix decompositions plots



[1] Jérôme Kunegis. KONECT – The Koblenz Network Collection. In Proc. Int. Conf. on World Wide Web Companion, pages 1343–1350, 2013. [ http ]
[2] Alan Mislove, Hema Swetha Koppula, Krishna P. Gummadi, Peter Druschel, and Bobby Bhattacharjee. Growth of the Flickr social network. In Proc. Workshop on Online Soc. Netw., pages 25–30, 2008.