Matrix: JGD_Relat/rel3
Description: Relations from Florent Hiver, Univ. Paris-Est Marne-La-Valle'e
(bipartite graph drawing) |
Matrix properties | |
number of rows | 12 |
number of columns | 5 |
nonzeros | 18 |
structural full rank? | no |
structural rank | 3 |
# of blocks from dmperm | 2 |
# strongly connected comp. | 9 |
explicit zero entries | 0 |
nonzero pattern symmetry | 0% |
numeric value symmetry | 0% |
type | integer |
structure | rectangular |
Cholesky candidate? | no |
positive definite? | no |
author | F. Hiver |
editor | J.-G. Dumas |
date | 2008 |
kind | combinatorial problem |
2D/3D problem? | no |
Notes:
Relations from Florent Hiver, Univ. Paris-Est Marne-La-Valle'e From Jean-Guillaume Dumas' Sparse Integer Matrix Collection, http://ljk.imag.fr/membres/Jean-Guillaume.Dumas/simc.html http://www-igm.univ-mlv.fr/~hivert/ Filename in JGD collection: Relat/rel3.mat
Ordering statistics: | result |
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD | 17 |
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD | 8 |
SVD-based statistics: | |
norm(A) | 6 |
min(svd(A)) | 0 |
cond(A) | Inf |
rank(A) | 1 |
sprank(A)-rank(A) | 2 |
null space dimension | 4 |
full numerical rank? | no |
singular values (MAT file): | click here |
SVD method used: | s = svd (full (R)) ; where [~,R,E] = spqr (A) with droptol of zero |
status: | ok |
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.