user- Understanding the efficiency of social tagging systems using information theory
- Tagging and Metadata for Social Information Organization Workshop in conjunction with the 16th International World Wide Web Conference (May 2007)
- Proceedings of the Dagstuhl Seminar on Social Web Communities, (2008)
- Workshop on Search in Social Media SSM'08, in conjunction with CIKM'08, Napa Valley, USA, (2008)
- CIKM '08: Proceeding of the 17th ACM conference on Information and knowledge mining, page 223--232. New York, NY, USA, ACM, (2008)
