Matrix properties
number of rows	83,060
number of columns	275,814
nonzeros	590,833
structural full rank?	no
structural rank	82,837
# of blocks from dmperm	1,405
# strongly connected comp.	224
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 83060-by-1
c	full 275814-by-1
lo	full 275814-by-1
hi	full 275814-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:	result
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	1,341,173,334
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	39,895,809

For a description of the statistics displayed above, click here.

Maintained by Tim Davis, last updated 12-Mar-2014.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.