Matrix properties
number of rows	2,361
number of columns	2,361
nonzeros	13,828
# strongly connected comp.	101
explicit zero entries	0
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	binary
structure	symmetric
Cholesky candidate?	no
positive definite?	no

author	S. Sun, L. Ling, N. Zhang, G. Li, R. Chen
editor	V. Batagelj
date	2003
kind	undirected graph
2D/3D problem?	no

Additional fields	size and type
PIN_class	full 2361-by-1
nodename	full 2361-by-154

Notes:

------------------------------------------------------------------------------
Pajek network converted to sparse adjacency matrix for inclusion in UF sparse 
matrix collection, Tim Davis.  For Pajek datasets, See V. Batagelj & A. Mrvar,
http://vlado.fmf.uni-lj.si/pub/networks/data/.                                
------------------------------------------------------------------------------
 Yeast protein interaction / long names                                       
 ---------------------------------------                                      
 Dongbo Bu, etal.: Topological structure analysis of the                      
 protein-protein interaction network in budding yeast.                        
 Nucleic Acids Research, 2003, Vol. 31, No. 9 2443-2450                       
 http://www.bioinfo.org.cn/PIN/                                               
 http://www.imb-jena.de/jcb/ppi/PPI_PDF_free/bu2003.pdf                       
                                                                              
 transformed in Pajek format: V. Batagelj, 25. July 2003                      
 -----                                                                        
 Yeast protein interaction / PIN class                                        
 -------------------------------------                                        
 Dongbo Bu, etal.: Topological structure analysis of the                      
 protein-protein interaction network in budding yeast.                        
 Nucleic Acids Research, 2003, Vol. 31, No. 9 2443-2450                       
 http://www.bioinfo.org.cn/PIN/                                               
                                                                              
 transformed in Pajek format: V. Batagelj, 25. July 2003                      
 PIN class encoding:                                                          
 1-T, 2-M, 3-U, 4-C, 5-F, 6-P, 7-G, 8-D, 9-O, 10-E, 11-R, 12-B, 13-A          
 -----                                                                        

SVD-based statistics:
norm(A)	19.4861
min(svd(A))	7.18759e-41
cond(A)	2.71108e+41
rank(A)	1,644
null space dimension	717
full numerical rank?	no
singular value gap	1.7232e+12

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.