This volume encapsulates the papers presented at a conference on the classification of data held in 1991. The material is organized in three parts - data analysis and classification, data modelling and knowledge processing and applications and special subjects.

1 Data Analysis, Classification.- Parameter Extrapolation in Marketing Research.- Application of Pattern Recognition and Fuzzy Sets to the Interpretation of Chromatograms.- A Clustering Technique for Maximizing ø-Divergence, Noncentrality and Discriminating Power.- Structural Analysis in Input-Output Tables.- The Precision of Bayesian Single Case Classification.- Bounds for the Tail Probabilities of the Linear Ratchet Scan Statistic.- Multidimensional Scaling as a Framework for Correspondence Analysis and its Extensions.- Conception of a Package for Typology Making and Analyzing.- Exploratory-Graphical Methods for Time Series Analysis.- Clustering in Metric Spaces: Some Existence and Continuity Results for k-Centers.- Classification and Clustering in Spatial and Image Data.- The MVL (Missing Values Linkage) Approach for Hierarchical Classification when Data are Incomplete.- Formal Concept Analysis of Data With Tolerances.- Towards a Structure Theory of Ordinal Data.- The Jukes-Cantor Transformation and Additivity of Estimated Genetic Distances.- 2 Data Modeling, Knowledge Processing.- Decision Support for Retrieval From Fact Databases.- Implementation of a Parallel Deductive Database.- The WINHEDA Prototype: Knowledge-Based Access to Distributed Heterogeneous Knowledge Sources.- Knowledge Representation in a System for Marketing Research.- Data Management in a Knowledge-Based System for Marketing Research.- Challenges for Information Systems: Representation, Modeling, and Metaknowledge.- Enterprise Modeling: Basis for Information Systems Design.- Massive Parallel Database Applications in Multiprocessor Systems.- Improving Access to Legal Information in Document Databases Exploiting Techniques of Knowledge-Based Systems.- 3 Applications, Special Subjects.- Non-SpatialAnalysis of “Genetic Kinship” in Skeletal Remains.- Some Common Problems in the Use of Classification Procedures in Social Science.- Visualization in the Analysis Cycle of Observational Data.- Stylistic Analyses in Archaeology by Means of Correspondence Analysis.- Description and Classification of Respiratory Patterns with Multivariate Explorative Statistics.- Structure and Phylogenetic Information of Large Subunit Ribosomal RNA.- Hypermedia-Encyclopedias.- The Multilayer Perceptron for Discriminant Analysis: Two Examples.- RELATAN — Computer-aided Analysis of Texts based on the Method RELATEX.- Phylogenetic Studies by Comparative Sequence Analysis of Evolutionary Conserved Macromolecules.- Physical and Linguistic Facts.