SNAP/citHepPh
Arxiv High Energy Physics paper citation network
Name 
citHepPh 
Group 
SNAP 
Matrix ID 
2292 
Num Rows

34,546 
Num Cols

34,546 
Nonzeros

421,578 
Pattern Entries

421,578 
Kind

Directed Graph 
Symmetric

No 
Date

2003 
Author

J. Gehrke, P. Ginsparg, J. Kleinberg 
Editor

J. Leskovec 
Structural Rank 

Structural Rank Full 

Num Dmperm Blocks


Strongly Connect Components

21,608 
Num Explicit Zeros

0 
Pattern Symmetry

0.3% 
Numeric Symmetry

0.3% 
Cholesky Candidate

no 
Positive Definite

no 
Type

binary 
SVD Statistics 
Matrix Norm 
5.707717e+01 
Minimum Singular Value 
0 
Condition Number 
Inf

Rank 
26,377 
sprank(A)rank(A) 

Null Space Dimension 
8,169 
Full Numerical Rank? 
no 
Download Singular Values 
MATLAB

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MATLAB
Rutherford Boeing
Matrix Market

Notes 
Networks from SNAP (Stanford Network Analysis Platform) Network Data Sets,
Jure Leskovec http://snap.stanford.edu/data/index.html
email jure at cs.stanford.edu
Highenergy physics citation network
Dataset information
Arxiv HEPPH (high energy physics phenomenology ) citation graph is from the
eprint arXiv and covers all the citations within a dataset of 34,546 papers
with 421,578 edges. If a paper i cites paper j, the graph contains a directed
edge from i to j. If a paper cites, or is cited by, a paper outside the
dataset, the graph does not contain any information about this.
The data covers papers in the period from January 1993 to April 2003 (124
months). It begins within a few months of the inception of the arXiv, and thus
represents essentially the complete history of its HEPPH section.
The data was originally released as a part of 2003 KDD Cup.
Dataset statistics
Nodes 34546
Edges 421578
Nodes in largest WCC 34401 (0.996)
Edges in largest WCC 421485 (1.000)
Nodes in largest SCC 12711 (0.368)
Edges in largest SCC 139981 (0.332)
Average clustering coefficient 0.2962
Number of triangles 1276868
Fraction of closed triangles 0.1457
Diameter (longest shortest path) 12
90percentile effective diameter 5
Source (citation)
J. Leskovec, J. Kleinberg and C. Faloutsos. Graphs over Time: Densification
Laws, Shrinking Diameters and Possible Explanations. ACM SIGKDD International
Conference on Knowledge Discovery and Data Mining (KDD), 2005.
J. Gehrke, P. Ginsparg, J. M. Kleinberg. Overview of the 2003 KDD Cup. SIGKDD
Explorations 5(2): 149151, 2003.
Files
File Description
citHepPh.txt.gz Paper citation network of Arxiv High Energy Physics category
citHepPhdates.txt.gz Time of nodes (paper submission time to Arxiv)
