Matrix properties
number of rows	12,471
number of columns	872,622
nonzeros	22,624,727
structural full rank?	no
structural rank	12,418
# of blocks from dmperm	82
# strongly connected comp.	13
explicit zero entries	0
nonzero pattern symmetry	0%
numeric value symmetry	0%
type	binary
structure	rectangular
Cholesky candidate?	no
positive definite?	no

author	S. Buss
editor	T. Davis
date	2009
kind	undirected bipartite graph
2D/3D problem?	no

Notes:

A full year of data from July 2008 to July 12, 2009, representing 12,646
users from digg.com.  Each row is a user, each column is a web page.    
From Steven Buss, for the Connectious project.                          

SVD-based statistics:
norm(A)	1524.14
min(svd(A))	0
cond(A)	Inf
rank(A)	12,417
sprank(A)-rank(A)	1
null space dimension	54
full numerical rank?	no
singular value gap	4.63112e+12

singular values (MAT file):	click here
SVD method used:	s = svd (full (R)) ; where [~,R,E] = spqr (A') with droptol of zero
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.