Talks / Invited Talks up to about 2000

 

„R-Satisfying Multi-Commodity Flows and Capacity Alterations of Networks“, 5th Balkan Mathematical Congress, Belgrad, Yugoslavia, 1974.

„Kapazitätsänderungen bei Netzwerken“, Oberwolfach-Tagung über Numerische Methoden graphentheoretischer & kombinatorischer Probleme, Oberwolfach, 1974.

„Über Flußprobleme in Netzwerken“, Gesellschaft für Angewandte Mathematik & Mechanik-Tagung, Göttingen, 1975.

„Zur Berechnung gleichzeitiger Flüsse verschiedener Beschaffenheit“, DGOR/SVOR-Tagung, Interlaken, Switzerland, 1975.

„On Constrained Shortest Route Problems“, Oberwolfach-Tagung über Optimierung und Operations Research, Oberwolfach, 1975.

„Zur Lösung von Wegproblemen mit zeitabhängigen Beschränkungen“, Gesellschaft für An­ge­wandte Mathematik & Mechanik-Tagung, Graz, Austria, 1976.

„Probleme bei gleichzeitigen Flüssen in Graphen“, Oberwolfach-Tagung über Operations Re­search, Oberwolfach, 1976.

„Über Wege maximaler Kapazität“, 1st Symposium on Operations Research, Heidelberg, 1976.

„Optimale Wege bei zeitabhängigen Nebenbedingungen“, 21st International Scientific Colloquium, TH Ilmenau, German Democratic Republic, 1976.

„Stochastische Aspekte der Projektplanung“, Gesellschaft für Angewandte Mathematik & Mechanik-Tagung, Copenhagen, Denmark, 1977.

„Über eine Klasse von Schätzern bei stochastischen Projektplanungsmodellen“, NRW-Statistik Kolloquium, Düsseldorf, 1977.

„Graphenprobleme aus dynamischer Sicht“, 2nd Symposium on Operations Research, Aachen, 1977.

„Zeit- und Kostenoptimierung von Bottleneckwegen“, DGOR-Tagung, Kiel, 1977 (with J. Hartung).

„Remarks on Stochastic Aspects on Graphs“, Workshop on Optimization and Operations Research, Bad Honnef, 1977.

„Sequential Bounding of the Reliability of Strictly Ordered Systems“, European Meeting of Statisticans, Oslo, Norway, 1978.

„Zur Zuverlässigkeit graphischer Systeme“, 3rd Symposium on Operations Research, Mann­heim, 1978.

„Some Properties of Strict Digraphs and Stochastic Applications“, Workshop on Combinatorial Optimization, Bonn, 1978.

„Einige Fragestellungen zur Zuverlässigkeitstheorie“, Fernuniversität Hagen, 1978.

„Stichproben bei partieller Kenntnis der Populationsstruktur“, Universität Karlsruhe (TH), 1979.

“Statistical Methods for Marketing Problems“, 3rd European Congress on Operations Research, Amsterdam, Netherlands, 1979.

„Reliability-Estimation for Generalized Series-Parallel Systems with Time-Associated Performance Process“, 3rd International Symposium on Measurement and Control, Grenoble, France, 1979.

“Statistik auf Graphen“, 4th Symposium on Operations Research, Saarbrücken, 1979.

“On Path Extrema in Stochastic Acyclic Graphs“, (Invited Talk) 12th European Meeting of Statisticans, Varna, Bulgary, 1979.

„Wegextrema in stochastischen Graphen“, Symposium über Statistik, Ökonomie und Ent­schei­dungstheorie, Paderborn, 1979.

„Flows in Graphs and Stochastic Programming“, 5th Symposium on Operations Research, Köln, 1980 (with H.J. Cleef).

“On Stochastic Analysis of Project Networks“, NATO Advanced Study and Research Institute on Theoretical Approaches to Scheduling Problems, Durham, England, 1981.

„Stochastische Projektplanung und Marketingprobleme“, 6th Symposium on Operations Research, Augsburg, 1981.

„Marketing-Logistik bei stochastischer Nachfrage“, 11th Annual DGOR-Meeting, Frankfurt, 1982.

„Loglineare Modelle für Marketinganwendungen“, 7th Symposium on Operations Research, St. Gallen, Switzerland, 1982.

„Optimale Wege bei der Benutzung verschiedener Transportsysteme“, 27th International Scientific Colloquium, TH Ilmenau, German Democratic Republic, 1982.

„Short-Term Financial Planning under Uncertainty within a Graphtheoretical Framework“, 2nd Symposium on Money, Banking and Insurance, Karlsruhe, 1982.

„Paarweise Vergleiche für Marketing-Anwendungen“, (Invited Talk), Universität Mannheim, 1983.

„Die Anwendung der Stochastischen Programmierung auf Marketing-Probleme“, Tagung der Kommission Marketing im Verband der Hochschullehrer für Betriebswirtschaft e.V., Schloß Gracht, 1983.

„Recent Developments in the Analysis of Qualitative Data“, XII Annual Conference of the European Marketing Academy, Grenoble, France, 1983.

„Financial Planning via Stochastic Programming: A Stochastic Flows-with Gains Approach“, 2nd Workshop on Risk and Capital, Ulm, 1983.

„Preispolitische Grundbegriffe - Ihre Bedeutung für das Marketing“, (Invited Talk) Marketing-Club Karlsruhe e.V., Karlsruhe, 1983.

„Neuere Entwicklungen der Analyse qualitativer Marketing-Daten“, Bundeswehrhoch­schule Hamburg, 1983.

„Stochastic Programs and their Deterministic Subprogram Sequence Solution“, IIASA Laxenburg, Österreich, 1983.

„Multidimensional Reliability Problems for GSP-Digraphs“, Oberwolfach-Tagung über Operations Research, Oberwolfach, 1984 (with J. Hartung).

„Stochastische Programme und ihre Lösung durch Folgen deterministischer Unter­pro­gramme“, Hochschule der Bundeswehr, München, 1984.

„Datenanalyse auf der Basis von Ordinalurteilen“, Tagung der Gesellschaft für Klassifikation, Hofgeismar, 1984.

„Konsumentenbeurteilungen von Werbebotschaften“, Verhaltenswissenschaftliches Kolloquium, Paderborn, 1984.

„Generalized Thurstonian Scaling, Part I“,(Invited Talk) University of Stockholm, Schweden, 1984.

„A Multidimensional Analysis of Consumer Preference Judgements Related to Print Ads“, EMAC/ESOMAR Symposium on Methodological Advances in Marketing Research in Theory and Practice, Copenhagen, Dänemark, 1984 (with I. Böckenholt).

„Analysis of Sales of Price Promoted Consumer Goods Using Scanner Data“, EMAC/ESOMAR Symposium on Methodological Advances in Marketing Research in Theory and Practice, Copenhagen, Dänemark, 1984 (with M. Both).

„Generalized Thurstonian Scaling of Advertising Messages“, TIMS/ORSA Marketing Science Conference, Nashville, USA, 1985.

„Empirische Ergebnisse zur Verbreitung und Nutzung von Statistik-Software in der Marktforschungspraxis“, 3. Konferenz über wissenschaftliche Anwendung von Statistik-Software, München, 1985 (with F. Förster/K. Schiller).

„PENCLUS (PENalty CLUStering) for Marketing Applications“, 9. Jahrestagung der Gesellschaft für Klassifikation e.V., Karlsruhe, 1985 (with M. Both).

„Two-Mode Hierarchical Clustering as an Instrument for Marketing Research“, 9. Jahrestagung der Gesellschaft für Klassifikation e.V., Karlsruhe, 1985 (with E. Espejo).

„Two-Mode Analysis of Advertising Messages for Imagery Products“, ORSA/TIMS Marketing Science Conference, University of Texas at Dallas, USA, 1986.

„Stochastic Network Problems and Their 'Deterministic Modified Network Problem Sequence' Solution“,(Invited Talk) Southern Methodist University, Dallas/Texas, USA, 1986.

„Probabilistic Choice Behavior Models with Applications to Marketing“,(Invited Talk) University of California at Los Angelos, USA, 1986.

„Segmentation Possibilities within Probabilistic Choice Models“,(Invited Talk) University of Illinois at Urbana-Champaign, USA, 1986.

„Probabilistic Choice Behavior Models“,(Invited Talk) AT&T Bell Laboratories, Murray Hill, New Jersey, USA, 1986.

„Measuring Consumer's Responses to Advertising via Recently Developed Data Analysis Procedures“, (Invited Talk) AT&T Bell Communications Research, Livingston, New Jersey, USA, 1986.

„New Multivariate Analysis Procedures for the Evaluation of Consumer Responses to Marketing“,(Invited Talk) University of Rochester, New York, USA, 1986.

„Über Prognosemöglichkeiten für Sonderpreisaktionen unter Verwendung von Spread-sheets und Planungssprachen“, Annual DGOR-meeting, Ulm, 1986 (with M. Both).

„Neue probabilistische Auswahlmodelle im Marketing“, Annual DGOR-meeting, Ulm, 1986 (with I. Böckenholt).

„Consumer Behavior Analysis via Recently Developed Data Analysis Procedures“, 8th European Conference on Operational Research, Lisbon, Portugal, 1986, (with I. Böckenholt).

„New Results to Two-Mode Clustering with Relations to OR-Modelling“, 8th European Conference on Operational Research, Lisbon, Portugal, 1986.

„Ein Vergleich zweimodaler Clusteranalyseverfahren“, Symposium on Operations Research, Darmstadt, 1986 (with M. Both).

„Zur Klassifikation von Marktforschungsinstituten nach ihrer Methodennutzung im Bereich Datenanalyse,“ 10. Jahrestagung der Gesellschaft für Klassifikation, Münster, 1986.

„Segmentation Possibilities within Probabilistic Consumer Choice Models“, Annual Conference of the European Marketing Academy, Helsinki, Finland, 1986.

„Analyse von Marketing-Mix-Strategien unter Verwendung eines Spreadsheetprogramms“, IBM-Kongress, Düsseldorf, 1986 (with I. Böckenholt).

„Analyse von Sonderpreisaktionen unter Verwendung einer Planungssprache und eines Spreadsheetprogramms“, IBM-Kongress, Düsseldorf, 1986 (with M. Both).

„PROLOG-based Decision Support for Data Analysis in Marketing“, International Workshop on Data Analysis, Decision Support and Expert Knowledge Representation in Marketing and Related Areas of Research, Karlsruhe, 1987 (with I. Böckenholt/M. Both).

„A PROLOG-Based PC-Implementation for New Product Introduction“, International Work­shop on Data Analysis, Decision Support and Expert Knowledge Representation in Marketing and Related Areas of Research, Karlsruhe, 1987 (with A. Schaer).

„An Expert System Prototype for Analyzing Marketing Data“, ORSA/TIMS Marketing Science Conference, Paris, France, 1987 (with I. Böckenholt/M. Both).

„Segmentation Based Analysis of Probabilistic Choice Data“, ORSA/TIMS Marketing Science Conference, Paris, France, 1987 (with I. Böckenholt).

„Probabilistic Multidimensional Scaling of Paired Comparisons Data“, 1st Conference of the International Federation of Classification Societies (IFCS), Aachen, 1987 (with I. Böckenholt).

„Hierarchical Clustering with Missing-Values in One-Mode and Two-Mode Proximity Data“, 1st Conference of the International Federation of Classification Societies (IFCS), Aachen, 1987 (with I. Böckenholt/E. Espejo).

„Market Research Support by Data Analysis Techniques: Theoretical Development vs. Practical Applications“,DGOR/NSOR-meeting, Veldhoven/Eindhoven, Niederlande, 1987.

„Different Approaches to Covariance Structure Analysis: A Comparison“, DGOR/ NSOR-meeting, Veldhoven/Eindhoven, Niederlande, 1987 (with Ch. Homburg).

„New Developments in Cluster Analysis“,(Invited Talk) University of Western Ontario, London, Canada, 1987.

„Probabilistic Choice Models: Comparisons and New Results“,(Invited Talk) OISE, Department of Measurement, Evaluation & Computer Applications, Toronto, Canada, 1987.

„New Results in Two-Mode Clustering of Marketing Data“, 14th Annual Conference of the European Marketing Academy, Toronto, Canada, 1987.

„Probabilistic Choice Models in Marketing: Comparisons and New Results“, ORSA/ TIMS-meeting, St. Louis, USA, 1987.

„New Product Introduction Based on Pre-Test Market Data“, EMAC/ESOMAR Symposium on Micro and Macro Market Modelling: Research on Prices, Consumer Behaviour and Forecasting, Tutzing, 1987 (with I. Böckenholt).

„A Knowledge-Based System for Supporting Data Analysis Problems“, GMÖOR-Conference, Passau, 1987 (with I. Böckenholt/M. Both).

„MEXICO - A Knowledge-Based Prototype for New Product Introduction“, GMÖOR- Conference, Passau, 1987 (with A. Schaer).

„Describing Marketing Phenomena via Optimally Grouped Relations: Some Experiences with the CAR-Model“,(Invited Talk) OISE, Department of Measurement, Evaluation & Computer Applications, Toronto, Canada, 1988.

„Probabilistic Choice Behavior Models for Marketing Applications“,(Invited Talk) University of Toronto, Canada, 1988.

„How to Cluster Relations Describing Marketing Phenomena“,(Invited Talk) Vanderbilt University, Nashville, USA, 1988.

„Describing Marketing Phenomena via Optimally Grouped Relations: Some Experiences with the CAR-Model“,(Invited Talk) University of Illinois at Urbana-Champaign, USA, 1988.

„Datenanalyse und Entscheidungsunterstützung“, (Plenary Talk) 12. Annual Meeting of GfKl, Darmstadt, 1988 (with M. Schader).

„Neuere Entwicklungen im Bereich der Kovarianzstrukturanalyse“, 12. Annual Meeting of GfKl, Darmstadt, 1988 (with Ch. Homburg).

„MEXICO-Prototyp eines wissensbasierten Systems zur Unterstützung der Klassifikation von Neuprodukteinführungsentscheidungen“, 12. Annual Meeting of GfKl, Darmstadt, 1988 (with A. Schaer).

„Pre-Test Market Modelling for Assessing New Product Marketing Decisions“, ORSA/TIMS Marketing Science Conference, Seattle, 1988 (with I. Böckenholt).

„Analyzing Marketing Data by Methods for the Selection of Optimal Covariance Structure Models“, EURO/TIMS-Conference, Paris, France, 1988 (with Ch. Homburg).

„Decision Support for New Product Introduction Management“, EURO/TIMS Conference, Paris, France, 1988 (with I. Böckenholt).

„Zur Klassifikation von Relationen: Eine Fallstudie“, DGOR-Annual Meeting, Berlin, 1988 (with M. Schader).

„Exploratory Approaches for the Analysis of Causal Models: Marketing Applications and Theory“, DGOR-Annual Meeting, 1988 (with Ch. Homburg).

„Assessment of Price Acceptance Levels for New Products“, DGOR-Annual Meeting, Berlin, 1988 (with I. Böckenholt).

„Clusterwise Aggregation of Relations: An Additional Tool of a Data Analysis Decision Support System“,(Invited Talk) Istituto di Scienze dell'Informazione, Università di Bari, Bari, Italien, 1988.

„Decision Support for Marketing Problems“,(Invited Talk) CSATA-Technopolis Centre, Bari, Italien, 1988.

„A New Approach to Market Structure Analysis: Simultaneous Classification and Multi­di­men­sional Scaling“, ORSA-TIMS Conference, Denver, Colorado, USA, 1988 (with I. Böckenholt).

„Data Analysis and Decision Support“, (Invited Paper) 4th International Symposium on Applied Stochastic Models and Data Analysis, Nancy, France, 1988 (with M. Schader).

„Clusterwise Evaluation of Paired Comparisons“, 4th International Symposium on Applied Stochastic Models and Data Analysis, Nancy, France, 1988 (with M. Schader).

„PC-Gestütztes Marketing-Management“, ONLINE'89 Kongress IV, 12. Europäische Kon­greß­messe für Technische Kommunikation, Hamburg, 1989 (with D. Baier, I. Böckenholt).

„Eine Klassifikation von Modellen zur Abbildung von Kaufverhaltensmodellen“, 13. GfKl-Jahrestagung, Augsburg, 1989 (with R. Decker).

„Verallgemeinerte Latent Class Analysis: Ein neuer Ansatz zur Marktstrukturierung“, 13. GfKl-Jahrestagung, Augsburg 1989 (with I. Böckenholt).

„Decision Support for Marketing Problems“, TIMS-XXIX Meeting, Osaka, Japan, 1989.

„International Marketing Aspects with Regard to Latin American Countries“, TIMS-XXIX Meeting, Osaka, Japan, 1989.

„Probabilistic Choice Behaviour: Comparisons and New Results“,(Invited Talk) Hokkaido University, Sapporo, Japan, 1989.

„Clusterwise Aggregations of Relations: An Additional Tool of a Data Analysis Decision Support System“,(Invited Talk) Kyoto University, Kyoto, Japan, 1989.

„New Developments in Cluster Analysis“,(Invited Talk) Rikkyo (St. Paul's) University, Tokyo, Japan, 1989

„Probabilistic Choice Behaviour: Comparisons and New Results“, Industrial Products Research Institute, (Invited Talk) Tsukuba-Science-City, Japan, 1989.

„Probabilistic Choice Behaviour: Comparisons and New Results“, (Invited Talk) The National Center for University Entrance Examination, Tokyo, Japan, 1989.

„Wissensbasierte Entscheidungsunterstützung in Marktforschung und Marketing“, (Invited Talk) 24. Kongreß der deutschen Marktforschung, Stuttgart, 1989.

„PROLOG-Based Decision Support for Data Analysis“, International Symposium on Data Analysis and Learning Symbolic and Numeric Knowledge, Antibes, France, 1989 (with M. Schader).

„Penalty-Verfahren bei der Clusteranalyse“, DGOR-Annual Meeting, Kiel, 1989.

„Entscheidungsunterstützung bei der Auswertung von Primärforschungsdaten - Ein Konzept zur Verbindung von Wissensbasis, Datenbank und Methoden“, DGOR-Annual Meeting, Kiel, 1989 (with D. Baier).

„Marketing Management Decision Support“, GMÖOR-Conference, Ulm, 1989.

„Computergestützte Entscheidungsunterstützung im Marketing“, 9. Symposium - „Der Computer als Instrument der Forschung und Lehre in den Sozial- und Wirtschafts­wissen­schaften“, Universität Innsbruck, Österreich, 1989.

„Computer-Assisted Marketing Management“, NATO Advanced Workshop on Data, Expert Knowledge and Decisions, Universität der Bundeswehr Hamburg, 1989 (with M. Schader).

„Computergestütztes Marketing“, Vortragsreihe im Rahmen einer Vorlesung am Institut für Höhere Studien, Wien, Österreich, 1989.

„Klassifikation im Rahmen computergestützter Entscheidungsfindung im Marketing“, 14. GfKl-Jahrestagung, Marburg, 1990.

„What's the News in Data Analysis“, Vortragsreihe im Rahmen des ERASMUS- Programmes, Université Libre de Bruxelles, Brüssel, Belgien, 1990.

„Computergestützte Entscheidungshilfen im Marketing“, Tagung der Kommission OR des Verbandes der Hochschullehrer für Betriebswirtschaftslehre, Universität Mannheim, 1990.

„Veränderung der Märkte, Internationalisierung des Wettbewerbs, Herausforderungen an die Unternehmen“, Europäischer Manager-Dialog, 1990.

„Expert Systems in Marketing: Comparisons and Demonstration of Running Systems“, International DGOR/GMÖOR/ÖGOR/SVOR Conference on Operations Research, Vienna,1990 (with R. Decker).

„Two-Mode Pyramidal Clustering: A New Way Towards Marketing Data Analysis“, Interna­tional DGOR/GMÖOR/ÖGOR/SVOR Conference on Operations Research, Vienna, 1990 (with M. Schader).

„Auswertung von Marketing-Daten mit Computerunterstützung“, Konferenz über die Analyse von Mikrodaten als Basis wirtschaftspolitischer Entscheidungen, Konstanz, 1990.

„Computer-Assisted Marketing Enriched by Capabilities of Knowledge-Based Systems“, EMAC/ESOMAR-Symposium, Athens, 1990 (with D. Baier).

„Data Analysis Using the MARK2MAN (MARKet research and MARKeting MANagement) Software“, (Invited Talk) Ontario Institute for Studies in Education (OISE), Department of Measurement, Evaluation, & Computer Applications, Toronto, Canada, 1990.

„Computer-Assisted Marketing“, ORSA/TIMS Conference, Philadelphia, USA, 1990.

„Data Analysis Using the MARK2MAN (MARKet research and MARKeting MANagement) Software“, (Invited Talk) Rutgers University, Newark, USA.

„Classification for Marketing Purposes: New Results, Applications and Computer-Aided Demonstrations“, (Invited Talk) International Symposium on Theory and Practice of Classification, Moskau, 1990.

„Hierarchische und pyramidale Klassifikation bei fehlenden Daten“, 15th Annual Meeting of GfKl, Salzburg, Austria, 1991 (with M. Schader).

„Computer-Assisted Market Research and Marketing (Where are the Expert Systems?)“, (Invited Talk) 30. Annual EPhMRA Conference, Vienna, 1991.

„Computergestützte Entscheidungsunterstützung in Marktforschung und Marketing Management“, Sitzung der Arbeitsgruppe PECOR der DGOR, Universität-Gesamthoch­schule Kassel, 1991 (with D. Baier).

„Computergestützte Entscheidungsunterstützung in Marktforschung und Marketing“, (Invited Talk) Freie Universität Berlin, 1991.

„Hierarchical vs. Pyramidal Classification when Dissimilarity Data have Missing Values“, 3rd Conference of IFCS, Edinburgh, Scotland, 1991 (with M. Schader).

„Computer-Assisted Market Research and Marketing“, 20th Annual DGOR-conference, Stuttgart-Hohenheim, 1991.

„Positioning Analysis using Knowledge-Based Support“, 3rd International Workshop on Data, Expert Knowledge, and Decisions, Reisensburg Castle, 1991 (with D. Baier/F. Wartenberg).

„Knowledge-Based Support in Quantitative Consumer Behaviour Analysis“, 3rd International Workshop on Data, Expert Knowledge, and Decisions, Reisensburg Castle, 1991 (with R. Decker/M. Plötz).

„Pyramidal Clustering with Missing Values“, INRIA Conference about Symbolic-Numeric Data Analysis and Learning, Paris, France, 1991 (with M. Schader).

„Marketing and Computer Assisted Support“, EURO XII/TIMS XXXI Joint International Conference, Helsinki, Finland,1992.

„Market Research and Analysis Models and Techniques“, EURO XII/TIMS XXXI Joint International Conference, Helsinki, Finland, 1992.

„Computer-Assisted Decision Support for Market Research and Marketing Problems“, IFAC/IFORS Conference on Support Systems for Decision and Negotiation Processes, Warsaw, Poland, 1992.

„Marketing Data Analysis by Pyramidal Clustering“, the TIMS Marketing Science Conference, London, 1992 (with M. Schader).

„Klassifikation von Ansätzen zur Schlußfolgerung unter Unsicherheit in Expertensystemen“, 16. Annual Meeting of GfKl, Dortmund, 1992 (with A. Rese).

„Pyramidal Segmentation: A New Approach for Market Structuring“, TIMS/ORSA Conference, Orlando, USA, 1992.

“Computer Assisted Marketing”, (Invited Talk) Columbia University, NY, 1992.

“Computer Assisted Marketing”, (Invited Talk) Cornell University, Johnson Graduate School of Management, Ithaca, NY, 1992.

“Clusterwise Aggregation of Relations”, (Invited Talk) Purdue University Lafayette, 1992.

“OR Modeling of New Segmentation Approaches”, (Invited Talk) George Mason University Fairfax, Virginia, USA, 1992.

“Algorithm for New Product Idea Generation”, ORSA/TIMS Conference, San Francisco, USA, 1992.

“New Product Introduction (NPI) as Application of Operations Management”, POMS Annual Meeting, Orlando, Florida, USA, 1992.

August GMÖOR Hamburg

September DGOR Aachen

November GfKl Sek DA-NK Freiburg

„Optimally Grouped Relations: Some Experiences with the CAR (Clusterwise Aggregation of Relations) Model, IFCS-Conference, Charlottesville, USA.

“Marketing Research: Data, Modeling Process, and Decisions: PART II: Marketing Planning”, (Invited Presentation), OR-Meeting, Bern, Schweiz, 1993.

“Marketing Data Analysis and Decision Support”, Barcelona, Spain 1993

“Marketing Decisions and Operations Research Methodology” (Semi Plenary Talk), Amsterdam, NL, 1993.

“OR-Modeling of New Segmentation Approaches”, (Invited Talk) Universität Pompeu Fabra, Barcelona, Spain 1993.

Marketing Data Analysis: New Results, Applications & Computer-Aided Demonstrations”, (Course for Students) Universität Pompeu Fabra, Barcelona, Spain 1993.

10.10.94 Vortrag Thessaloniki (Invited Talk)

1.-3.5.95 Trondheim (Invited Talk)

“Simultaneous vs. Sequential Approaches for Solving Data Analysis Problems”, Köln, 1995.

16.-18.6.95 Copenhagen

“MMSS: Pilgrimage to the Ivory Tower?”, TIMS-Conference, Sydney, Australia, 1995.

20.10.95 Vortrag St. Gallen, Hochschullehrertagung, Kom. OR

„Generalized Thurstonian Scaling of Consumer Behavior Data“, French-German Workshop, Universität Potsdam, 1996.

“Ivory-Tower and Lighthouse: Landmarks of Quantitative Marketing”, Humboldt-Universität, Berlin, 1996.

“Market Segmentation and Product Positioning via Generalized Thurstonian Scaling of Consumer Behavior Data”, CLAD, Lissabon, Portugal, 1996.

“Classification of Pricing Strategies in a Competitive Environment”, 21st Annual Conference of GfKl, Potsdam, 1997 (with M. Löffler).

“Segment-Specific Behavioral Aspects of Designing Information Services in the Internet”, 21st Annual Conference of GfKl, Potsdam, 1997 (with T. Klein, F. Wartenberg).

“Supporting Internet Access Decisions: A Comparison of Internet Services Providers”, 21st Annual Conference of GfKl, Potsdam, 1997 (with T. Klein, F. Wartenberg).

“An Optimal Product Positioning Procedure Using a Probabilistic Ideal Point Model Formulation”, 21st Annual Conference of GfKl, Potsdam, 1997 (with D. Baier).

“Market Segmentation and Product Positioning via Generalized Thurstonian Scaling”, 1997 INFORMS Marketing Science Conference, University of California, Berkeley, USA, 1997.

“Advances in Cluster Analysis and Applications to Economics” (Invited Paper), 51st ISI-Symposium, Isanbul, Turkey, 1997.

“Advances in Cluster Analysis and Applications to Economics” (Invited Paper), JOCLAD Conference, Porto, Portugal, 1997.

„Classification and Positioning of Data Mining Tools, 22nd Annual Conference of GfKl, Dresden, 1998 (with F. Säuberlich).

„A Classification Approach for Competitive Pricing“, 22nd Annual Conference of GfKl, Dresden, 1998 (with M. Löffler).

“Electronic Market Place as Target Group Oriented Concept of Integrated Online Services”, 22nd Annual Conference of GfKl, Dresden, 1998 (with T. Klein).

“Product Line Optimization and Sales Force Management: Two Areas where Marketing Meets Operations Research, (Invited Talk) University of Trondheim, Norway, 1998.

“Advances in Positioning and Segmentation with Applications to Marketing, (Invited Talk) University of Trondheim, Norway, 1998.

“Managing Pricing Decisions in Retailing for Product Categories”, Marketing Science Conference, INSEAD, France, 1998 (with M. Löffler).

“Advances in Clustering and Data Analysis with Applications to Economics”, (Plenary Talk) IFCS-Symposium, Rome, Italy, 1998.

“Data Mining – a New Label for an Old Problem?”, (Invited Talk) Workshop “Data Mining and Business Applications in Osaka, 24.9. – 25.9.1998.

“Data Mining – eine neue Bezeichnung für ein altes Problem?” Herbsttagung der Sektion DA-NK der GfKl in Regensburg, 20.-21.11.1998.

“Is Data Mining the Key to Knowledge Discovery?”, (Plenary Talk) 23rd Annual Conference of GfKl, University of Bielefeld, 1999.

“Decision Tree Construction by Using Association Rules”, 23rd Annual Conference of GfKl, University of Bielefeld, 1999 (with F. Säuberlich).

“Data Mining: A New Label for an Old Problem?”, (Plenary Talk), Dortmund, 1999.

„Data Mining: A New Challenge“, International Conference on Large Scale Data Analysis, Köln, 25.-28.05.1999.

“Elektronische Dienstleitungen und Marketing im Informationszeitalter”, VIROR-Ringvorle­sung, Juli 1999.

“Kundenbindung zwischen Electronic Commerce und Vertriebsinformationssystemen”, (Eingeladener Vortrag) Kongreß für Informationssysteme, Fribourg, Schweiz, August 1999.

„Marketing Data Mining“, Montpellier, France, September 1999.

“Data Mining: An Assessment and Discussion of New Directions”, (Invited Talk) Krakau, Polen, 1999.

“Mining Web Navigation Path Fragments”, Workshop on Web Mining for E-Commerce-Challenges and Opportunities, 6th ACM SIG KDD International Conference on Knowledge Discover and Data Mining, WEBKDD 2000, Boston, MA, USA (with L. Schmidt-Thieme).

“Data Mining and Beyond? Web Mining?” Talk within the Invited Session on Data Mining and Business Applications 7th Conference of the International Federation of Classification Societies, Namur, Belgium, July 11 – 14, 2000.

“Introduction to Data Mining and Business Applications” Talk within the Invited Session on Data Mining and Business Applications 7th Conference of the International Federation of Classification Societies, Namur, Belgium, July 11 – 14, 2000.

„From Data Mining to Web Mining“, Rom

“Online Conjoint Analysis of Designs for Multimedia Enhanced Teaching”, 25th Annual GfKl-Conference, Universität München, 14.-16. März 2000 (with L. Schmidt-Thieme).

„Identifying Interesting Frequent Subsets by Generative Models of Distributions on Multisets“, 25th Annual GfKl Conference, Universität München, 14. – 16. März 2001 (with L.Schmidt-Thieme).

“Recommender Systems and e-Marketing”, 25th Annual GfKl-Conference, Universität München, 14.-16. März 2000 (with L. Schmidt-Thieme).

“Frequent Substructures in Web Usage Mining – A Unified Approach“, Web Mining Work­shop, First SIAM International Conference on Data Mining, Chicago, USA, April 5 – 7, 2001 (with L. Schmidt-Thieme).

“WEB MINING und Recommendersysteme für eMarketing-Anwendungen“, (Eingeladener Vortrag), Technische Universität Cottbus, 14.6.2001.

“Web Mining and Personalization for e-Customer Care“ Talk within the Invited Session on Challenges in Market Research: From Conjoint Analysis to Web Mining, International Meeting of the Psychometric Society, University of Osaka, Japan, July 15 – 20, 2001.

“Recommender Systems based on Navigation Path Features”, Workshop on Mining Web Log Data Across All Customer Touch Points, WEBKDD 2001, San Francisco, CA, USA, August 26, 2001 (with L. Schmidt-Thieme).

“WEB MINING: Erfolgsgarantie im e-Business?” Ganztägiges Tutorial im Rahmen der GOR-Jahrestagung, Duisburg, 2001 (with L. Schmidt-Thieme).

“Web Mining and Personalization for eCustomer Care”, Workshop IRGREM (International Research Group for Relationship and E-Marketing), University of Pau, France, 22.9.2001.

“Web Mining und Recommendersysteme”, Herbsttagung der AG-DANK der GfKl, TU Berlin, 28./29.9.2001.

“B2B / B2C Customer Programs: First Survey Results“, Workshop on (e)CRM, University of Karlsruhe, November 9, 2001 (together with M. Volkmann).