這是Harvard做的案子，裡面有社會網絡資料喔，詳見part3 relational data in codebook p.22。
Tastes, Ties, and Time: Facebook data release
September 25, 2008
In collaboration with Harvard sociology graduate students Kevin Lewis and Marco Gonzalez, and with UCLA professor Andreas Wimmer and Harvard professor Nicholas Christakis, Berkman Fellow Jason Kaufman has made available a first wave of Facebook.com data through the Dataverse Network Project.
The dataset comprises machine-readable files of virtually all the information posted on approximately 1,700 FB profiles by an entire cohort of students at an anonymous, northeastern American university. Profiles were sampled at one-year intervals, beginning in 2006. This first wave covers first-year profiles, and three additional waves of data will be added over time, one for each year of the cohort's college career.
Though friendships outside the cohort are not part of the data, this snapshot of an entire class over its four years in college, including supplementary information about where students lived on campus, makes it possible to pose diverse questions about the relationships between social networks, online and offline.
Special thanks are due to Kevin Lewis, and to Marco Gonzalez, for their heavy lifting on the project.
Researchers may access the data at http://dvn.iq.harvard.edu/dvn/dv/t3.