JGD_BIBD/bibd_12_4
Balanced Incomplete Block Design from Mark Giesbrecht, Univ. of Waterloo
| Name |
bibd_12_4 |
| Group |
JGD_BIBD |
| Matrix ID |
1923 |
|
Num Rows
|
66 |
|
Num Cols
|
495 |
|
Nonzeros
|
2,970 |
|
Pattern Entries
|
2,970 |
|
Kind
|
Combinatorial Problem |
|
Symmetric
|
No |
|
Date
|
2008 |
|
Author
|
M. Giesbrecht |
|
Editor
|
J.-G. Dumas |
| Structural Rank |
66 |
| 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 |
1.643168e+01 |
| Minimum Singular Value |
5.291503e+00 |
| Condition Number |
3.105295e+00
|
| Rank |
66 |
| 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.12.4.sms
|
