Exploring topical and social groups
Deep Twitter Diving: Exploring Topical Groups in Microblogs at Scale
Parantapa Bhattacharya, Saptarshi Ghosh, Juhi Kulshrestha, Mainack Mondal, Muhammad Bilal Zafar, Niloy Ganguly, and Krishna P. Gummadi. ACM Conference on Computer Supported Cooperative Work and Social Computing (CSCW), Baltimore, USA, February 2014.
Distinguishing topical and social groups based on common identity and bond theory
Przemyslaw A. Grabowicz, Luca Maria Aiello, Victor M. Eguiluz, Alejandro Jaimes. Proceedings of the sixth ACM international conference on Web search and data mining (WSDM), Rome, Italy, February 2013.