This directed network contains sent messages between the users of an online community of students from the University of California, Irvine. A node represents a user. A directed edge represents a sent message. Multiple edges denote multiple messages.
Source
Data downloaded from http://konect.uni-koblenz.de/ orginaly from http://toreopsahl.com/datasets/#online_social_network
References
Jerome Kunegis. KONECT - The Koblenz Network Collection. In Proc. Int. Web Observatory Workshop, pages 1343-1350, 2013.
Tore Opsahl and Pietro Panzarasa. Clustering in weighted networks. Social Networks, 31(2):155--163, 2009.