Information and Classification Concepts, Methods and Applications Proceedings of the 16th Annual Conference of the “Gesellschaft für Klassifikation e.V.” University of Dortmund, April 1–3, 1992
Data Analysis and Information Systems: Statistical and Conceptual Approaches Proceedings of the 19th Annual Conference of the Gesellschaft für ... Data Analysis, and Knowledge Organization)
Innovations in Classification, Data Science, and Information Systems Proceedings of the 27th Annual Conference of the Gesellschaft für Klassifikation e.V., Brandenburg University of Technology, Cottbus, March 12-14, 2003
Classification and Knowledge Organization Proceedings of the 20th Annual Conference of the Gesellschaft Für Klassifikation E.V., University of Freiburg, March 6 - 8, 1996 ; with 80 Tables
Classification, Data Analysis, and Knowledge Organization Models and Methods with Applications
Classification, Data Analysis, and Data Highways: Proceedings of the 21st Annual Conference of the Gesellschaft für Klassifikation e.V., University of ... Data Analysis, and Knowledge Organization)
Classification in the Information Age: Proceedings of the 22nd Annual GfKl Conference, Dresden, March 4–6, 1998 (Studies in Classification, Data Analysis, and Knowledge Organization)
From Data and Information Analysis to Knowledge Engineering Proceedings of the 29th Annual Conference of the Gesellschaft für Klassifikation e.V., University of Magdeburg, March 9-11, 2005
Between Data Science and Applied Data Analysis Proceedings of the 26th Annual Conference of the Gesellschaft für Klassifikation e.V., University of Mannheim, July 22–24, 2002
Classification and Information Processing at the Turn of the Millennium Proceedings of the 23rd Annual Conference of the Gesellschaft für Klassifikation e.V., University of Bielefeld, March 10–12, 1999