Matrix properties
number of rows	47,430
number of columns	47,430
nonzeros	564,952
structural full rank?	yes
structural rank	47,430
# of blocks from dmperm	2,277
# strongly connected comp.	1,157
entries not in dmperm blocks	7,075
explicit zero entries	91,664
nonzero pattern symmetry	3%
numeric value symmetry	0%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	P. Hollinger
editor	T. Davis
date	2001
kind	economic problem
2D/3D problem?	no

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	14,863,002	12,623,574	12,501,606
Cholesky flop count	2.1e+10	1.2e+10	1.2e+10
nnz(L+U), no partial pivoting	29,678,574	25,199,718	24,962,857
nnz(V) for QR, upper bound nnz(L) for LU	17,263,329	8,559,821	9,626,625
nnz(R) for QR, upper bound nnz(U) for LU	32,342,170	23,123,794	23,651,335

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 91664 explicit zero entries.

Maintained by Tim Davis, last updated 04-May-2008.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.