JGD_BIBD/bibd_22_8

Balanced Incomplete Block Design from Mark Giesbrecht, Univ. of Waterloo
Name bibd_22_8
Group JGD_BIBD
Matrix ID 1937
Num Rows 231
Num Cols 319,770
Nonzeros 8,953,560
Pattern Entries 8,953,560
Kind Combinatorial Problem
Symmetric No
Date 2008
Author M. Giesbrecht
Editor J.-G. Dumas
Structural Rank 231
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 binary
SVD Statistics
Matrix Norm 1.041768e+03
Minimum Singular Value 1.362498e+02
Condition Number 7.646015e+00
Rank 231
sprank(A)-rank(A) 0
Null Space Dimension 0
Full Numerical Rank? yes
Download Singular Values MATLAB
Download MATLAB Rutherford Boeing Matrix Market
Notes 
Balanced Incomplete Block Design from Mark Giesbrecht, Univ. of Waterloo
From Jean-Guillaume Dumas' Sparse Integer Matrix Collection,            
http://ljk.imag.fr/membres/Jean-Guillaume.Dumas/simc.html               
                                                                        
Filename in JGD collection: BIBD/BIBD_22_8_231x319770