LPnetlib/lpi_gosh
Netlib LP problem gosh: minimize c'*x, where Ax=b, lo<=x<=hi
| Name |
lpi_gosh |
| Group |
LPnetlib |
| Matrix ID |
716 |
|
Num Rows
|
3,792 |
|
Num Cols
|
13,455 |
|
Nonzeros
|
99,953 |
|
Pattern Entries
|
99,953 |
|
Kind
|
Linear Programming Problem |
|
Symmetric
|
No |
|
Date
|
1993 |
|
Author
|
R. Main |
|
Editor
|
J. Chinneck |
| Structural Rank |
3,790 |
| Structural Rank Full |
false |
|
Num Dmperm Blocks
|
130 |
|
Strongly Connect Components
|
105 |
|
Num Explicit Zeros
|
0 |
|
Pattern Symmetry
|
0% |
|
Numeric Symmetry
|
0% |
|
Cholesky Candidate
|
no |
|
Positive Definite
|
no |
|
Type
|
real |
| SVD Statistics |
| Matrix Norm |
3.236720e+02 |
| Minimum Singular Value |
6.285286e-16 |
| Condition Number |
5.149678e+17
|
| Rank |
3,790 |
| sprank(A)-rank(A) |
0 |
| Null Space Dimension |
2 |
| Full Numerical Rank? |
no |
| Download Singular Values |
MATLAB
|
| Download |
MATLAB
Rutherford Boeing
Matrix Market
|
| Notes |
An infeasible Netlib LP problem, in lp/infeas. For more information
send email to netlib@ornl.gov with the message:
send index from lp
send readme from lp/infeas
The lp/infeas directory contains infeasible linear programming test problems
collected by John W. Chinneck, Carleton Univ, Ontario Canada. The following
are relevant excerpts from lp/infeas/readme (by John W. Chinneck):
PROBLEM DESCRIPTION
-------------------
GOSH, GRAN, PANG: these very large, large, and medium size models,
respectively, problems arose from British Petroleum operations models.
Contributor: Roger Main, BP Oil.
Name Rows Cols Nonzeros Bounds Notes
gosh 3793 10733 97257 B FR 242 free cols
Added to Netlib on Sept. 19, 1993
|
