Matrix properties
number of rows	14,760
number of columns	14,760
nonzeros	145,157
structural full rank?	yes
structural rank	14,760
# of blocks from dmperm	737
# strongly connected comp.	387
entries not in dmperm blocks	2,455
explicit zero entries	12,833
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'))	2,788,451	2,366,369	2,342,721
Cholesky flop count	2.4e+09	1.4e+09	1.4e+09
nnz(L+U), no partial pivoting	5,562,142	4,717,978	4,673,137
nnz(V) for QR, upper bound nnz(L) for LU	2,898,238	1,935,750	1,675,333
nnz(R) for QR, upper bound nnz(U) for LU	5,399,522	3,845,407	4,167,375

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 12833 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.