Problematic linear programming problem, Meszaros test set
Name iprob
Group Meszaros
Matrix ID 1790
Num Rows 3,001
Num Cols 3,001
Nonzeros 9,000
Pattern Entries 9,000
Kind Linear Programming Problem
Symmetric No
Date 2004
Editor C. Meszaros
Structural Rank 3,001
Structural Rank Full true
Num Dmperm Blocks 1
Strongly Connect Components 1
Num Explicit Zeros 0
Pattern Symmetry 100%
Numeric Symmetry 50%
Cholesky Candidate no
Positive Definite no
Type real
SVD Statistics
Matrix Norm 1.322563e+05
Minimum Singular Value 3.134804e-17
Condition Number 4.218964e+21
Rank 3,000
sprank(A)-rank(A) 1
Null Space Dimension 1
Full Numerical Rank? no
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Converted to standard form via Resende and Veiga's mpsrd:
minimize c'*x, subject to A*x=b and lo <= x <= hi