%-------------------------------------------------------------------------------
% UF Sparse Matrix Collection, Tim Davis
% http://www.cise.ufl.edu/research/sparse/matrices/Buss/connectus
% name: Buss/connectus
% [Website recommendation system, Steven Buss, Univ. Florida]
% id: 2247
% date: 2009
% author: S. Buss
% ed: T. Davis
% fields: name title A id date author ed kind notes
% kind: undirected bipartite graph
%-------------------------------------------------------------------------------
% notes:
% This is a matrix from Steven Buss, for a website recommendation system (to
% be called www.connectious.com).  Each row of the matrix is a unique user. 
% Eachc olumn of the matrix is a web page.  A(i,j)=1 if user i has tagged   
% web page j as favorable, and a 0 represents no opinion.  The data was     
% obtained from digg.com.  Note that the matrix A*A' contains one           
% connected component of size 342, and 170 singletons (nodes with no edges) 
% This means that a group of 341 users share some interests, at least       
% indirectly, and that there are 171 other users that share no interests    
% at all with any other users (they have no pages in common with anyone).   
%-------------------------------------------------------------------------------
