Simple network analysis based on http://www.rci.rutgers.edu/~pmclean/mcleanp_01_920_313_breiger_duality.pdf To run: coffee bin/sna.coffee --file=./samples/duality.csv References: http://kieranhealy.org/blog/archives/2013/06/09/using-metadata-to-find-paul-revere/ http://www.sscnet.ucla.edu/polisci/faculty/chwe/ps269/han.pdf