I: Data Analysis and Classification.- Classification Methods.- Hierarchical Clustering of Sampled Functions.- Spatial Clustering of Species Based on Quadrat Sampling.- A kn-Nearest Neighbour Algorithm for Unimodal Clusters.- Asymptotic Robustness in Cluster-Analysis for the Case of Tukey-Huber Distortions.- Choosing the Number of Component Clusters in the Mixture-Model Using a New Informational Complexity Criterion of the Inverse-Fisher Information Matrix.- Fuzzy Classification.- Fuzzy Sets and Fuzzy Partitions.- Fuzzy Clustering by Minimizing the Total Hypervolume.- Conceptual Analysis.- Conceptual Data Systems.- Conceptual Clustering via Convex-Ordinal Structures.- Diagrams of Similarity Lattices.- Approximate Galois Lattices of Formal Concepts.- Representation of Data by Pseudoline Arrangements.- Mathematical Characterizations.- A Relational Approach to Split Decomposition.- Some New Useful Representations of Dissimilarities in Mathematical Classification.- Multidimensional Scaling.- A Comparison of Two Methods for Global Optimization in Multidimensional Scaling.- Directional Analysis of Three-Way Skew-Symmetric Matrices.- Clustering in Low-Dimensional Space.- The Construction of Neighbour-Regions in Two Dimensions for Prediction with Multi-Level Categorical Variables.- Different Geometric Approaches to Correspondence Analysis of Multivariate Data.- Nonlinear Biplots for Nonlinear Mappings.- Various Methods for Data Analysis.- Gradient Filtering Projections for Recovering Structures in Multivariate Data.- Classification with Set-Valued Decision Functions.- Canonical Discriminant Analysis: Comparison of Resampling Methods and Convex-Hull Approximation.- Nonparametric Prediction of Time Series on the Basis of Typical Course Patterns.- Moving Point Patterns: The Poisson Case.- II: Information Retrieval, Knowledge Processing and Software.- Information Retrieval.- Representations, Models and Abstractions in Probabilistic Information Retrieval.- Fuzzy Graphs as a Basic Tool for Agglomerative Clustering and Information Retrieval.- The Various Roles of Information Structures.- Neural Networks.- Classification Properties of Communicating Neural Networks.- Knowledge Extraction from Self-Organizing Neural Networks.- Self-Organizing Neural Networks for Visualisation and Classification.- Expert Systems and Knowledge Processing.- HyDi: Integration of Hypermedia and Expert System Technology for Technical Diagnosis.- Classification and Learning of Similarity Measures.- Context Sensitive Knowledge Processing.- An Efficient Application of a Rule-Based System.- Computational Linguistics.- Acquisition of Syntactical Knowledge from Text.- Generating Topic-Based Links in a Hypertext-System for News.- Software.- Interactively Displaying Ultrametric and Additive Trees.- Anaglyphen 3D — A Program for the Interactive Representation of Three-Dimensional Perspective Plots of Statistical Data.- III: Applications and Special Topics.- Sequence Data and Tree Reconstruction.- Discovering Consensus Molecular Sequences.- Alignment and Hierarchical Clustering Method for Strings.- More Reliable Phylogenies by Properly Weighted Nucleotide Substitutions.- Caminalcules and Didaktozoa: Imaginary Organisms as Test-Examples for Systematics.- Data Analysis and Informatics in Medicine.- Multivariate Analysis of the Process of Acclimation of Physiologic Variables.- Classification of EEG Signals into General Stages of Anesthesia in Real-Time Using Autoregressive Models.- Automatic Segmentation and Classification of Multiparametric Image Data in Medicine.- Pseudoroots as Descriptors for a Thesaurus Based on Weidtman’s Diagnosis Table of Pediatrics.- Special Topics - Thesauri, Archaeology, Musical Science and Psychometrics.- An Approach to a Space Related Thesaurus.- Classification of Archaeological Sands by Particle Size Analysis.- The Analysis of Stratigraphic Data with Particular Reference to Zonation Problems.- Classification Criterion and the Universals in the Organization of a Musical Text.- A Two-Mode Clustering Study of Situations and Their Features.