Matrix properties
number of rows	4,772
number of columns	4,772
nonzeros	8,965
# strongly connected comp.	4,711
explicit zero entries	0
nonzero pattern symmetry	1%
numeric value symmetry	1%
type	binary
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	J. Kleinberg
editor	V. Batagelj
date	2006
kind	directed graph
2D/3D problem?	no

Additional fields	size and type
nodename	full 4772-by-106

Notes:

------------------------------------------------------------------------------
Pajek network converted to sparse adjacency matrix for inclusion in UF sparse 
matrix collection, Tim Davis.  For Pajek datasets, See V. Batagelj & A. Mrvar,
http://vlado.fmf.uni-lj.si/pub/networks/data/.                                
------------------------------------------------------------------------------
 Epa - Pages linking to www.epa.gov.                                          
 This graph was constructed by expanding a 200-page response set to           
 a search engine query, as in the hub/authority algorithm.                    
 from Jon Kleinberg:                                                          
   http://www.cs.cornell.edu/courses/cs685/2002fa/                            
 adapted for Pajek, V. Batagelj, March 19, 2006                               
   0 -> 4772                                                                  

SVD-based statistics:
norm(A)	16.1575
min(svd(A))	0
cond(A)	Inf
rank(A)	951
null space dimension	3,821
full numerical rank?	no
singular value gap	3.60253e+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.