This volume collects revised versions of papers presented at the 29th Annual Conference of the Gesellschaft für Klassifikation, the German Classification Society, held at the Otto-von-Guericke-University of Magdeburg, Germany, in March 2005. In addition to traditional subjects like Classification, Clustering, and Data Analysis, converage extends to a wide range of topics relating to Computer Science: Text Mining, Web Mining, Fuzzy Data Analysis, IT Security, Adaptivity and Personalization, and Visualization.

Plenaries and Semi-plenaries.- Clustering.- Discriminant Analysis.- Classification with Latent Variable Models.- Multiway Classification and Data Analysis.- Ranking, Multi-label Classification, Preferences.- PLS Path Modeling, PLS Regression and Classification.- Robust Methods in Multivariate Statistics.- Data Mining and Explorative Multivariate Data Analysis.- Text Mining.- Fuzzy Data Analysis.- Economics and Mining in Business Processes.- Banking and Finance.- Marketing.- Adaptivity and Personalization.- User and Data Authentication in IT Security.- Bioinformatics and Biostatistics.- Classification of High-dimensional Biological and Medical Data.- Medical and Health Sciences.- Music Analysis.- Data Mining Competition.