Ed H. Chi, Todd Mytkowicz. Understanding the efficiency of social tagging systems using information theory. In Peter Brusilovsky, Hugh C. Davis, editors, HYPERTEXT 2008, Proceedings of the 19th ACM Conference on Hypertext and Hypermedia, Pittsburgh, PA, USA, June 19-21, 2008. pages 81-88, ACM, 2008. [doi]
Abstract is missing.