Matrix properties
number of rows	50,636,154
number of columns	50,636,154
nonzeros	1,949,412,601
# strongly connected comp.	8,815,057
explicit zero entries	0
nonzero pattern symmetry	12%
numeric value symmetry	12%
type	binary
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	P. Boldi, M. Rosa, M. Santini, S. Vigna
editor	P. Boldi, M. Rosa, M. Santini, S. Vigna
date	2005
kind	directed graph
2D/3D problem?	no

Notes:

Laboratory for Web Algorithmics, P. Boldi et al., Univ of Milano     
http://law.dsi.unimi.it/index.php                                    
Paolo Boldi, Marco Rosa, Massimo Santini, Sebastiano Vigna           
                                                                     
References:                                                          
[1] "The WebGraph Framework I: Compression Techniques," Paolo Boldi  
    and Sebastiano Vigna, Proc. of the Thirteenth International      
    World Wide Web Conference (WWW 2004), 2004, Manhattan, USA,      
    pp. 595--601, ACM Press.                                         
                                                                     
[2] "Layered Label Propagation: A MultiResolution Coordinate-Free    
    Ordering for Compressing Social Networks," Paolo Boldi, Marco    
    Rosa, Massimo Santini, and Sebastiano Vigna, Proceedings of the  
    20th international conference on World Wide Web, 2011, ACM Press.
                                                                     
[3] "UbiCrawler: A Scalable Fully Distributed Web Crawler",          
    Paolo Boldi, Bruno Codenotti, Massimo Santini, and Sebastiano    
    Vigna, Software: Practice & Experience, 2004, vol 34, no. 8,     
    pp. 711--726                                                     
                                                                     
                                                                     
LAW/sk-2005                                                          
                                                                     
This graph has been obtained from a 2005 crawl of the .sk            
domain performed by UbiCrawler for a group of Slovakian              
researchers. An interesting feature of this crawl is that            
we were provided a very large seed.                                  

Maintained by Tim Davis, last updated 01-Apr-2011.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.