Matrix properties
number of rows	49,944
number of columns	158,489
nonzeros	340,635
structural full rank?	no
structural rank	49,788
# of blocks from dmperm	967
# strongly connected comp.	157
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 49944-by-1
c	full 158489-by-1
lo	full 158489-by-1
hi	full 158489-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	432,302,882
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	14,114,830

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.