Matrix properties
number of rows	29,610
number of columns	29,610
nonzeros	335,972
structural full rank?	yes
structural rank	29,610
# of blocks from dmperm	1,437
# strongly connected comp.	737
entries not in dmperm blocks	4,553
explicit zero entries	48,664
nonzero pattern symmetry	4%
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'))	7,749,811	6,816,968	6,901,623
Cholesky flop count	9.2e+09	5.6e+09	5.9e+09
nnz(L+U), no partial pivoting	15,470,012	13,604,326	13,778,189
nnz(V) for QR, upper bound nnz(L) for LU	8,559,785	4,507,890	4,580,332
nnz(R) for QR, upper bound nnz(U) for LU	16,662,801	12,062,937	11,976,430

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 48664 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.