user- Analysis of Social Media and Ubiquitous Data, volume 6904 of LNAI, (2011)
- Workshop on Mining Patterns and Subgroups, Lorentz Center, Leiden, The Netherlands. Awarded with the Best Discovery Award, (2010)
- Proc. 24th Intl. FLAIRS Conference, AAAI Press, (2011)
- it - Information Technology 53(3):101-107 (2011)
- The VLDB Journal (2010)to appear .
- HMD -- Praxis der Wirtschaftsinformatik (February 2010)
- Proceedings of the Workshop on Mining Ubiquitous and Social Environments MUSE2010, Barcelona, Spain, (2010)
- Workshop on Knowledge Discovery, Data Mining, and Machine Learning, page 44 --51. (September 2009)
- Proceedings of the 21st ACM conference on Hypertext and hypermedia, Toronto, Canada, (2010)to appear .
- HT '09: Proceedings of the 20th ACM Conference on Hypertext and Hypermedia, page 323--324. New York, NY, USA, ACM, (June 2009)
