Matrix properties
number of rows	66,844
number of columns	217,531
nonzeros	466,800
structural full rank?	no
structural rank	66,641
# of blocks from dmperm	1,302
# strongly connected comp.	204
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 66844-by-1
c	full 217531-by-1
lo	full 217531-by-1
hi	full 217531-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	831,865,019	448,364,649
nnz(R) for QR, upper bound nnz(U) for LU	26,013,313	13,494,434

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