Post on 29-Jan-2016
Charting Collections of Connections in Social Media: Creating Visualizations with NodeXL
Cody Dunne cdunne@cs.umd.edu
13th Annual International Conference on Digital Government Research (dg.o 2012).June 4-7, 2012, College Park, MD.
My Background
NodeXL(Bonsignore et al, 2009;
Smith et al, 2009)
GraphTrail (Dunne et al, 2012)
Action Science Explorer (Dunne et al, 2012;Gove et al, 2011)
STICK (Shneiderman et al,
2011; Gove et al, 2011)
NetGrok (Blue et al, 2008)
What we have done: Open Tools• NodeXL• Data providers (“spigots”)
What we have done: Open Data
NodeXLGraphGallery.org
What we have done: Open Scholarship• Webshop 2011: NSF, Google, Intel• Webshop 2012! August 21-24 @UMD• Other Workshops: ICWSM12, NetSci, HyperText12, Cape Town,
Yeungnam, Italy
What we have done: Open Scholarship
What is Social Media?
Social Media
is all about connections
from people
to people.
Patterns are left behind
There are many kinds of ties….
http://www.flickr.com/photos/stevendepolo/3254238329
Like, Link, Reply, Rate, Review, Favorite, Friend, Follow, Forward, Edit, Tag, Comment, Check-in…
Internet Verbs!
“Think Link”Nodes & Edges
Is related to
A B
http://www.flickr.com/photos/dbarefoot/1814873464/sizes/o/
Robert Scoble’s Social Media “Star Fish”
Social Networks
• History: from the dawn of time!
• Jacob L. Moreno (1934)
Why do can we find in Social Media?
Hubs
Bridges
http://www.flickr.com/photos/library_of_congress/3295494976/sizes/o/in/photostream/
Clusters
http://www.flickr.com/photos/amycgx/3119640267/
Crowds
Why are these features important?
Understanding information flow
OrganizationsData sources• Email• Message Boards• Blogs• Wikis• Document sharing• Activity streams
Goals• Marketing• Support• Identify experts• Identify key employees
Communities
Welser, Howard T., Eric Gleave, Danyel Fisher, and Marc Smith. 2007. Visualizing the Signatures of Social Roles in Online Discussion Groups. The Journal of Social Structure. 8(2).
Experts and “Answer People”
Discussion starters, Topic setters
Discussion people, Topic setters
Networks
Edge List
Alice Bob Cathy
Alice 0 1 1
Bob 0 0 0
Cathy 1 0 0
Adjacency Matrix
Vertex1 Vertex2
Alice Bob
Alice Cathy
Cathy Alice
Network Analysis Applications
Sociology (Newman & Girvan, 2004)
Scientometrics (Henry et al, 2007)
Politics (Adamic & Glance, 2005)
Urban Planning (Scott Dempwolf)
Biology (Kelley et al, 2003)
Archaeology (Tom Brughmans)
WWW (Cheswick et al 2000)
Introduction to NodeXL
Like MSPaint™ for graphs.— the Community