Matrix properties
number of rows	646
number of columns	7,292
nonzeros	51,728
structural full rank?	yes
structural rank	646
# of blocks from dmperm	2
# strongly connected comp.	1
explicit zero entries	0
nonzero pattern symmetry	0%
numeric value symmetry	0%
type	binary
structure	rectangular
Cholesky candidate?	no
positive definite?	no

author
editor	C. Meszaros
date	2004
kind	linear programming problem
2D/3D problem?	no

Additional fields	size and type
b	full 646-by-1
c	full 7292-by-1
lo	full 7292-by-1
hi	full 7292-by-1
z0	full 1-by-1

Notes:

http://www.sztaki.hu/~meszaros/public_ftp/lptestset      
Converted to standard form via Resende and Veiga's mpsrd:
minimize c'*x, subject to A*x=b and lo <= x <= hi        

Ordering statistics:	result
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	2,799,927
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	137,257

SVD-based statistics:
norm(A)	37.614
min(svd(A))	1.68326e-16
cond(A)	2.23459e+17
rank(A)	563
sprank(A)-rank(A)	83
null space dimension	83
full numerical rank?	no
singular value gap	7.08888e+12

singular values (MAT file):	click here
SVD method used:	s = svd (full (A)) ;
status:	ok

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.