Talks
- Invited Talk at Universidad Complutense, Madrid, Spain, November 29, 2007, pdf-file.
- Conference EC-TEL 2007, Sissi, Greece, September 19, 2007, pdf-file.
- 7th MPEG-7/21 Community Workshop "Multimedia Metadata Applications (M3A)", Graz, Austria, September 5, 2007, pdf-file.
- Invited Talk at Special ICWL Workshop 2007, Jinhua, China, August 28, 2007, pdf-file.
- Conference ICWL 2007, Edinburgh, Scotland, August 16, 2007, pdf-file.
- Informatik-Oberseminar, RWTH Aachen, Germany, August, 6, 2007, pdf-file.
- Conference ICWSM 2007, Boulder, Colorado, USA, March 27, 2007, pdf-file.
- Doctoral Consortium at Conference EC-TEL 2006, Hersonissou, Greece, October 2, 2006, pdf-file.
- Conference I-KNOW '06, Graz, Austria, September 6, 2006, pdf-file.
- Conference ICWL 2006, Georgetown, Malaysia, July 21, 2006, pdf-file.
- 3rd MPEG-7/21 Community Workshop, Aachen, Germany, November 25, 2005, pdf-file.
- PhD students forum at the PROLEARN Summer School 2005, Sile, Turkey, September 7, 2005, pdf-file.
- Conference ICWL 2005, Hong Kong SAR, China, August 1, 2005, pdf-file.
- Seminar at School of Computer Science & Mathematics (CSM), Melbourne, Australia, July 15, 2005, pdf-file.
- Conference ICITA'05, Sydney, Australia, July 5, 2005, pdf-file.
- Conference I-KNOW '05, Graz, Austria, June 30, 2005, pdf-file.
- 2nd Workshop "MPEG and Multimedia Metadata Community", Graz, Austria, June 30, 2005, pdf-file.
- Workshop "MPEG-7 und Multimedia Metadaten: Standardisierung und Anwendungen", Klagenfurt, Austria, March 10, 2005, pdf-file.
- Conference Practical Aspects of Knowledge Management, PAKM 2004, Vienna, Austria, December 3, 2004, pdf-file.
- Conference ICWL 2004, Beijing, China, August 10, 2004, pdf-file.
- Conference ICCHP 2004, Paris, France, July 8, 2004, pdf-file.
- Conference I-KNOW '04, Graz, Austria, June 30, 2004, pdf-file.
- Workshop "IT in den Kultur- und Geisteswissenschaften", Hamburg, Germany, March 26, 2004, pdf-file.
- Symposium Die Listen der Evidenz, Cologne, Germany, February 5, 2004, pdf-file.
- Colloquium "Media and Cultural Communication", Cologne, Germany, January 20, 2004, pdf-file.
- Conference Advances in Web-based Learning, ICWL 2003, Melbourne, Australia, August 20, 2003, pdf-file.
- Conference Practical Aspects of Knowledge Management, PAKM 2002, Vienna, Austria, December 2, 2002, pdf-file.
- Conference SOFSEM 2002, Workshop on "Multimedia Semantics", Milovy, Czech Republic, November 28, 2002, pdf-file.
- Conference IT 2002 – 32nd Annual Conference held by the German Informatics society, Workshop "E-Learning Content auf Basis von XML", Dortmund, Germany, October 2, 2002, pdf-file.
- Conference Mensch & Computer, CSCL Workshop, Hamburg, Germany, September 2, 2002, pdf-file.
- Colloquium "Media and Cultural Communication", Cologne, Germany, June 18, 2002, pdf-file.