CiaoDVD movie ratings

This is the bipartite user–movie rating network of the site from 2013. The dataset contains 303 instances of multiple edges. The timestamps are only precise up to one day.


Internal namelibrec-ciaodvd-movie_ratings
NameCiaoDVD movie ratings
Data source
AvailabilityDataset is available for download
Consistency checkDataset passed all tests
Rating network
Dataset timestamp 2013
Node meaningUser, movie
Edge meaningRating
Network formatBipartite, undirected
Edge typeRatings, multiple edges
Temporal data Edges are annotated with timestamps
Snapshot Is a snapshot and likely to not contain all data


Size n =33,736
Left size n1 =17,615
Right size n2 =16,121
Volume m =72,665
Unique edge count m̿ =72,345
Wedge count s =4,896,641
Claw count z =714,761,874
Cross count x =130,769,246,563
Square count q =610,909
4-Tour count T4 =24,620,422
Maximum degree dmax =1,106
Maximum left degree d1max =1,106
Maximum right degree d2max =433
Average degree d =4.307 86
Average left degree d1 =4.125 18
Average right degree d2 =4.507 47
Fill p =0.000 254 762
Average edge multiplicity m̃ =1.004 42
Size of LCC N =32,135
Diameter δ =19
50-Percentile effective diameter δ0.5 =4.455 73
90-Percentile effective diameter δ0.9 =5.942 69
Median distance δM =5
Mean distance δm =5.000 04
Gini coefficient G =0.611 394
Balanced inequality ratio P =0.266 024
Left balanced inequality ratio P1 =0.239 160
Right balanced inequality ratio P2 =0.238 897
Relative edge distribution entropy Her =0.884 257
Power law exponent γ =2.500 71
Tail power law exponent γt =2.541 00
Tail power law exponent with p γ3 =2.541 00
p-value p =0.420 000
Left tail power law exponent with p γ3,1 =2.271 00
Left p-value p1 =0.865 000
Right tail power law exponent with p γ3,2 =1.851 00
Right p-value p2 =0.000 00
Degree assortativity ρ =−0.169 306
Degree assortativity p-value pρ =0.000 00
Spectral norm α =33.296 7
Algebraic connectivity a =9.868 54 × 10−5
Spectral separation 1[A] / λ2[A]| =1.341 77
Negativity ζ =0.422 172
Algebraic conflict ξ =0.018 375 1
Spectral signed frustration φ =0.001 033 49
Controllability C =18,998
Relative controllability Cr =0.563 137


Fruchterman–Reingold graph drawing

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 Laplacian

Spectral graph drawing based on the normalized adjacency matrix

Degree assortativity

Zipf plot

Hop distribution

Item rating evolution

Edge weight/multiplicity distribution

Temporal distribution

Temporal hop distribution

Diameter/density evolution

Signed temporal distribution

Rating class evolution

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] Guobing Guo, Jie Zhang, Daniel Thalmann, and Neil Yorke-Smith. ETAF: An extended trust antecedents framework for trust prediction. In Proc. Int. Conf. Adv. in Soc. Netw. Anal. and Min., pages 540–547, 2014.