An overview of the Network Overview Discovery and Exploration add-in for Excel 2007 (NodeXL), a social network analysis add-in for the familiar spreadsheet application. Visualize twitter, flickr, facebook, and email networks with just a few mouse clicks.
1. Network Overview, Discovery and Exploration for Excel 2007 Social Media Network Analysis with NodeXL Marc A. Smith Chief Social Scientist Connected Action Consulting Group Marc@ConnectedAction.net http://www.ConnectedAction.net http://www.codeplex.com/nodexl http://www.twitter.com/marc_smith http://delicious.com/marc_smith/Paper http://www.flickr.com/photos/marc_smith http://www.facebook.com/marc.smith.sociologist http://www.linkedin.com/in/marcasmith http://www.slideshare.net/Marc_A_Smith
2. Dr. Marc A. Smith Ph.D. in Sociology, UCLA, 2002 Chief Social Scientist, Connected Action Consulting Group,Silicon Valley, CA http://www.connectedaction.net marc@connectedaction.net Research on the social network structure of social media, online community, collaboration. Currently working on: NodeXL: Social Network Analysishttp://www.codeplex.com/nodexl Mapping link structure of social media Reporting tools for community and brands Discovering social roles in social media, building an ecological model of computer-mediated collective action
11. Social Network Analysis ToolkitTools to support the study of the social network structure of social media and other directed graph structures Sociologist “What are the structures of communication in scientific discussions?” User Experience Information Visualization “What are the best UI/UX workflows for network analysis tools?” Computer Scientist Algorithmicist for Social Network Measures “What are the measures and algorithms needed for understanding networks?”
14. Reply-To Network Network at distance 2 for the most prolific author of the microsoft.public.internetexplorer.general newsgroup The Ties that Blind?
35. Clear and consistent signaturesof an “Answer Person” Light touch to numerous threads initiated by someone else Most ties are outward to local isolates Many more ties to small fish than big fish 19
36. Roles Project Using Netscan data to derive social roles in Usenet Next steps: quantify & explore in more depth Answer Person, microsoft.public.windows.server.general Discussion, rec.kites Flame, alt.flame Social Support, alt.support.divorce PUBLISHED in HICSS, JCMC, JoSS, IEEE Internet Communications (special issue on Social Networks) 20
67. Systematic Yet Flexible Network Analysis Tasks Overall network metrics (e.g. number of nodes, number of edges, density, diameter) Node rankings (e.g. degree, betweenness, closeness centrality) Edge rankings (e.g. weight, betweenness centrality) Node rankings in pairs (e.g. degree vs. betweenness, plotted on a scatter gram) Edge rankings in pairs Cohesive subgroups (e.g. finding communities in networks) Multiplexity (e.g. analyzing comparisons between different edge types, such as friends vs. enemies) Shneiderman, Perer, Dunne
68. Whole Graph / All Time Sub Graph / All Time Filtering Network Diagrams Micro ---- Time ---- Macro Sub Graph / Narrow Time Slice Micro ---- Scale ---- Macro Whole Graph / Narrow Time Slice