KnowledgeMap -- Visualizing Invisible Networks of Knowledge  
in a Scientific Discipline, by M. Moqri, Univ of Florida,    
Warrington College of Business Administration.               
http://misknowledgemap.warrington.ufl.edu/                   
http://www.moqri.com/                                        
                                                             
This undirected wieghted graph describes the similarities    
between a set of 2427 articles.  A(i,j) is 0 if articles     
i and j are not similar at all, 1 if they are extremely      
similar.  The similarity metric is based on LSA, co-citation,
and bibliographic coupling of the articles.  Information     
about each node is as follows:                               
                                                             
label: the title of the document                    (text)   
year: year published (ranges from 2005 to 2014)     (number) 
source: journal                                     (text)   
authors: list of authors                            (text)   
keywords: list of keywords separated by semicolons  (text)   
topics: list of keywords separated by semicolons    (text)   
abstract:                                           (text)   
times cited:                                        (number)