Matrix properties
number of rows	129,181
number of columns	434,580
nonzeros	927,826
structural full rank?	no
structural rank	128,954
# of blocks from dmperm	1,546
# strongly connected comp.	228
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 129181-by-1
c	full 434580-by-1
lo	full 434580-by-1
hi	full 434580-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	3.484402e+09	1,222,013,025
nnz(R) for QR, upper bound nnz(U) for LU	97,048,944	34,413,157

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