Matrix properties
number of rows	131,828
number of columns	131,828
nonzeros	841,372
# strongly connected comp.	88,609
explicit zero entries	0
nonzero pattern symmetry	31%
numeric value symmetry	30%
type	integer
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	J. Leskovec, D. Huttenlocher, J. Kleinberg
editor	J. Leskovec
date	2010
kind	directed weighted graph
2D/3D problem?	no

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                                                 
                                                                              
Epinions social network                                                       
                                                                              
Dataset information                                                           
                                                                              
This is who-trust-whom online social network of a a general consumer review   
site Epinions.com. Members of the site can decide whether to ''trust'' each   
other. All the trust relationships interact and form the Web of Trust which is
then combined with review ratings to determine which reviews are shown to the 
user.                                                                         
                                                                              
Dataset statistics                                                            
                                                                              
Nodes   131828                                                                
Edges   841372                                                                
Nodes in largest WCC    119130 (0.904)                                        
Edges in largest WCC    833695 (0.991)                                        
Nodes in largest SCC    41441 (0.314)                                         
Edges in largest SCC    693737 (0.825)                                        
Average clustering coefficient  0.2424                                        
Number of triangles     4910076                                               
Fraction of closed triangles    0.08085                                       
Diameter (longest shortest path)    14                                        
90-percentile effective diameter    4.9                                       
                                                                              
Source (citation)                                                             
                                                                              
J. Leskovec, D. Huttenlocher, J. Kleinberg: Signed Networks in Social Media.  
28th ACM Conference on Human Factors in Computing Systems (CHI), 2010.        
http://cs.stanford.edu/people/jure/pubs/triads-chi10.pdf                      
                                                                              
Files                                                                         
File    Description                                                           
soc-sign-epinions.txt.gz    Directed Epinions signed social network           

For a description of the statistics displayed above, click here.

Maintained by Tim Davis, last updated 12-Mar-2014.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.