Mittelmann/rail582

Italian railways (H. Mittelmann test set)
Name rail582
Group Mittelmann
Matrix ID 1656
Num Rows 582
Num Cols 56,097
Nonzeros 402,290
Pattern Entries 402,290
Kind Linear Programming Problem
Symmetric No
Date 2005
Author P. Nobili
Editor J. Beasley
Structural Rank 582
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 1.859067e+02
Minimum Singular Value 1.000000e+00
Condition Number 1.859067e+02
Rank 582
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