Matrix properties
number of rows	1,609
number of columns	4,578
nonzeros	23,974
structural full rank?	yes
structural rank	1,609
# of blocks from dmperm	8
# strongly connected comp.	18
explicit zero entries	0
nonzero pattern symmetry	0%
numeric value symmetry	0%
type	real
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 1609-by-1
c	full 4578-by-1
lo	full 4578-by-1
hi	full 4578-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	647,450
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	54,415

SVD-based statistics:
norm(A)	11299.8
min(svd(A))	0.206911
cond(A)	54611.8
rank(A)	1,609
sprank(A)-rank(A)	0
null space dimension	0
full numerical rank?	yes

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.