Mittelmann/rail507

Italian railways (H. Mittelmann test set)
Name rail507
Group Mittelmann
Matrix ID 1654
Num Rows 507
Num Cols 63,516
Nonzeros 409,856
Pattern Entries 409,856
Kind Linear Programming Problem
Symmetric No
Date 2005
Author P. Nobili
Editor J. Beasley
Structural Rank 507
Structural Rank Full true
Num Dmperm Blocks 1
Strongly Connect Components 1
Num Explicit Zeros 0
Pattern Symmetry 0%
Numeric Symmetry 0%
Cholesky Candidate no
Positive Definite no
Type integer
SVD Statistics
Matrix Norm 1.493258e+02
Minimum Singular Value 1.000000e+00
Condition Number 1.493258e+02
Rank 507
sprank(A)-rank(A) 0
Null Space Dimension 0
Full Numerical Rank? yes
Download Singular Values MATLAB
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Notes
Hans Mittelmann test set, http://plato.asu.edu/ftp/lptestset
minimize c'*x, subject to A*x=b and lo <= x <= hi           
                                                            
RAIL: set covering problems from the Italian railroad, see  
http://people.brunel.ac.uk/~mastjjb/jeb/orlib/scpinfo.html