Matrix: Meszaros/dbic1
Description: linear programming problem, C. Meszaros test set
(bipartite graph drawing) |
Matrix properties | |
number of rows | 43,200 |
number of columns | 226,317 |
nonzeros | 1,081,843 |
structural full rank? | yes |
structural rank | 43,200 |
# of blocks from dmperm | 1 |
# strongly connected comp. | 1 |
explicit zero entries | 0 |
nonzero pattern symmetry | 0% |
numeric value symmetry | 0% |
type | integer |
structure | rectangular |
Cholesky candidate? | no |
positive definite? | no |
author | |
editor | C. Meszaros |
date | 2004 |
kind | linear programming problem |
2D/3D problem? | no |
Additional fields | size and type |
b | full 43200-by-1 |
c | full 226317-by-1 |
lo | full 226317-by-1 |
hi | full 226317-by-1 |
z0 | full 1-by-1 |
Notes:
http://www.sztaki.hu/~meszaros/public_ftp/lptestset Converted to standard form via Resende and Veiga's mpsrd: minimize c'*x, subject to A*x=b and lo <= x <= hi
Ordering statistics: | result |
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD | 103,181,687 |
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD | 2,715,260 |
For a description of the statistics displayed above, click here.
Maintained by Tim Davis, last updated 12-Mar-2014.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.