Matrix properties
number of rows	156,243
number of columns	514,577
nonzeros	1,096,002
structural full rank?	no
structural rank	156,016
# of blocks from dmperm	1,618
# strongly connected comp.	300
explicit zero entries	0
nonzero pattern symmetry	0%
numeric value symmetry	0%
type	integer
structure	rectangular
Cholesky candidate?	no
positive definite?	no

author	W. Carolan, J. Hill, J. Kennington, S. Niemi, S. Wichmann
editor	H. Mittelmann
date	1990
kind	linear programming problem
2D/3D problem?	no

Additional fields	size and type
b	full 156243-by-1
c	full 514577-by-1
lo	full 514577-by-1
hi	full 514577-by-1
z0	full 1-by-1

Notes:

Hans Mittelmann test set, http://plato.asu.edu/ftp/lptestset       
minimize c'*x, subject to A*x=b and lo <= x <= hi                  
                                                                   
PDS:  Patient distribution (evacuation) system. see                
W. Carolan, J. Hill, J. Kennington, S. Niemi, and S. Wichmann, "An 
Empirical Evaluation of the KORBX Algorithms for Military Airlift,"
Applications, Operations Research, 38, (1990), 240-248.            

Ordering statistics:	AMD	METIS
nnz(V) for QR, upper bound nnz(L) for LU	4.673157e+09	1,547,457,569
nnz(R) for QR, upper bound nnz(U) for LU	118,029,650	43,482,320

Maintained by Tim Davis, last updated 05-Mar-2008.
Matrix pictures by cspy, a MATLAB function in the CSparse package.