Inproceedings (grahl2007clustering)
Grahl, M.; Hotho, A. & Stumme, G.
Conceptual Clustering of Social Bookmarking Sites
Know-Center,
2007, 356-364
Techreport (citeulike:739394)
Heymann, P. & Garcia-Molina, H.
Collaborative Creation of Communal Hierarchical Taxonomies in Social Tagging Systems
Standford University,
Computer Science Department,
2006