Matrix properties
number of rows	1,490
number of columns	1,490
nonzeros	19,025
# strongly connected comp.	688
explicit zero entries	0
nonzero pattern symmetry	24%
numeric value symmetry	24%
type	integer
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	L. Adamic, N. Glance
editor	M. Newman
date	2005
kind	directed multigraph
2D/3D problem?	no

Additional fields	size and type
nodename	full 1490-by-80
nodevalue	full 1490-by-1
nodesource	full 1490-by-62

Notes:

Network collection from M. Newman                                          
http://www-personal.umich.edu/~mejn/netdata/                               
                                                                           
Political blogosphere Feb. 2005                                            
Data compiled by Lada Adamic and Natalie Glance                            
                                                                           
Node "value" attributes indicate political leaning according to:           
                                                                           
  0 (left or liberal)                                                      
  1 (right or conservative)                                                
                                                                           
Data on political leaning comes from blog directories as indicated.  Some  
blogs were labeled manually, based on incoming and outgoing links and posts
around the time of the 2004 presidential election.  Directory-derived      
labels are prone to error; manual labels even more so.                     
                                                                           
Links between blogs were automatically extracted from a crawl of the front 
page of the blog.                                                          
                                                                           
These data should be cited as Lada A. Adamic and Natalie Glance, "The      
political blogosphere and the 2004 US Election", in Proceedings of the     
WWW-2005 Workshop on the Weblogging Ecosystem (2005).                      

SVD-based statistics:
norm(A)	56.426
min(svd(A))	0
cond(A)	Inf
rank(A)	784
null space dimension	706
full numerical rank?	no
singular value gap	1.33878e+12

singular values (MAT file):	click here
SVD method used:	s = svd (full (A)) ;
status:	ok

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.