Matrix properties
number of rows	62
number of columns	62
nonzeros	318
# strongly connected comp.	1
explicit zero entries	0
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	binary
structure	symmetric
Cholesky candidate?	no
positive definite?	no

author	D. Lusseau
editor	M. Newman
date	2003
kind	undirected graph
2D/3D problem?	no

Additional fields	size and type
nodename	full 62-by-11

Notes:

Network collection from M. Newman                                          
http://www-personal.umich.edu/~mejn/netdata/                               
                                                                           
The graph dolphins contains an undirected social network of frequent       
associations between 62 dolphins in a community living off Doubtful Sound, 
New Zealand, as compiled by Lusseau et al. (2003).  Please cite            
                                                                           
  D. Lusseau, K. Schneider, O. J. Boisseau, P. Haase, E. Slooten, and      
  S. M. Dawson, The bottlenose dolphin community of Doubtful Sound features
  a large proportion of long-lasting associations, Behavioral Ecology and  
  Sociobiology 54, 396-405 (2003).                                         
                                                                           
Additional information on the network can be found in                      
                                                                           
  D. Lusseau, The emergent properties of a dolphin social network,         
  Proc. R. Soc. London B (suppl.) 270, S186-S188 (2003).                   
                                                                           
  D. Lusseau, Evidence for social role in a dolphin social network,        
  Preprint q-bio/0607048 (http://arxiv.org/abs/q-bio.PE/0607048)           

SVD-based statistics:
norm(A)	7.19361
min(svd(A))	4.60305e-17
cond(A)	1.56279e+17
rank(A)	60
null space dimension	2
full numerical rank?	no
singular value gap	2.78247e+13

singular values (MAT file):	click here
SVD method used:	s = svd (full (A)) ;
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.