%-------------------------------------------------------------------------------
% SuiteSparse Matrix Collection, Tim Davis
% https://sparse.tamu.edu/SNAP/CollegeMsg
% name: SNAP/CollegeMsg
% [SNAP network: messages on a Facebook-like platform at UC Irvine]
% id: 2777
% date: 2009
% author: P. Panzarasa, T. Opsahl, K. M. Carley
% ed: J. Leskovec
% fields: name title A id date author ed kind notes aux
% aux: temporal_edges
% kind: directed temporal multigraph
%-------------------------------------------------------------------------------
% notes:
% SNAP (Stanford Network Analysis Platform) Large Network Dataset Collection,
% Jure Leskovec and Anrej Krevl, http://snap.stanford.edu/data, June 2014.   
% email: jure at cs.stanford.edu                                             
%                                                                            
% SNAP/CollegeMsg temporal network                                           
%                                                                            
% https://snap.stanford.edu/data/CollegeMsg.html                             
%                                                                            
% Dataset information                                                        
%                                                                            
% This dataset is comprised of private messages sent on an online social     
% network at the University of California, Irvine. Users could search the    
% network for others and then initiate conversation based on profile         
% information. An edge (u, v, t) means that user u sent a private message to 
% user v at time t. The dataset here is derived from the one hosted by Tore  
% Opsahl (https://toreopsahl.com/datasets/#online_social_network), but we    
% have parsed it so that it can be loaded directly into SNAP as a temporal   
% network.                                                                   
%                                                                            
% Dataset statistics                                                         
% Nodes   1899                                                               
% Temporal Edges  59835                                                      
% Edges in static graph   20296                                              
% Time span   193 days                                                       
%                                                                            
% Source (citation)                                                          
% Pietro Panzarasa, Tore Opsahl, and Kathleen M. Carley. "Patterns and       
% dynamics of users' behavior and interaction: Network analysis of an online 
% community." Journal of the American Society for Information Science and    
% Technology 60.5 (2009): 911-932.                                           
%                                                                            
% Files                                                                      
% File    Description                                                        
% CollegeMsg.txt.gz   college messaging temporal network                     
%                                                                            
% Data format                                                                
%                                                                            
%     SRC DST UNIXTS                                                         
%     where edges are separated by a new line and                            
%                                                                            
%     SRC: id of the source node (a user)                                    
%     TGT: id of the target node (a user)                                    
%     UNIXTS: Unix timestamp (seconds since the epoch)                       
%                                                                            
% ---------------------------------------------------------------------------
% Notes on inclusion into the SuiteSparse Matrix Collection, July 2018:      
% ---------------------------------------------------------------------------
%                                                                            
% The SNAP data set is 1-based, with nodes numbered 1 to 1,899.              
%                                                                            
% In the SuiteSparse Matrix Collection, the primary graph (Problem.A in the  
% MATLAB struct) is the static graph (a sparse integer matrix).  A(i,j) is   
% the number of edges (i,j,t) that appear in the graph, for any timestamp t. 
% The individual edges (u,v,t) are kept in the Problem.aux.temporal_edges    
% array, where each row of the array is an edge (i,j,t).                     
%-------------------------------------------------------------------------------
