NYPA/Maragal_2

Rank deficient least squares problem, D. Maragal, NY Power Authority
Name Maragal_2
Group NYPA
Matrix ID 1885
Num Rows 555
Num Cols 350
Nonzeros 4,357
Pattern Entries 4,357
Kind Least Squares Problem
Symmetric No
Date 2008
Author D. Maragal
Editor T. Davis
Structural Rank 220
Structural Rank Full false
Num Dmperm Blocks 13
Strongly Connect Components 110
Num Explicit Zeros 0
Pattern Symmetry 0%
Numeric Symmetry 0%
Cholesky Candidate no
Positive Definite no
Type real
SVD Statistics
Matrix Norm 1.029508e+01
Minimum Singular Value 3.599600e-47
Condition Number 2.860063e+47
Rank 171
sprank(A)-rank(A) 49
Null Space Dimension 179
Full Numerical Rank? no
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Notes
rank deficient (rank(A) < sprank(A) < size(A,2))
rank: 171 sprank: 220 columns: 350