Selected invited talks.

• “From von Jhering to Alexy; From Expert Systems to Mediating Systems”; Dutch Conference on Artificial Intelligence and Law (JURIX-94); University of Amsterdam; Amsterdam, The Netherlands; December, 1994.
• “The Zeno Mediation System”; 10th Annual Conference of the International Association for Conflict Management (IACM); Bonn, Germany; 1997
• “The Zeno Argumentation Framework”, Dutch Association for Logic; Logic and Law Day; Utrecht, The Netherlands; November 20, 1999.
• “Software for Online Mediation”; Kooperative Planung und Mediation im Konfliktfall; Institut für Städtebau; Berlin, Germany; 27-29 June 2001.
• “Softwarewerkzeuge für demokratische Meinungsbildung und Konfliktlösung”; Fachtgung Verwaltungsinformatik 2001 (FTVI 2001); Electronic Government - Perspektiven einer Neugestaltung der öffentlichen Verwaltung mit Informationstechnik; Brühl, Germany; 5.-7. September 2001.
• “Mediation Systems”; Computer Science Department; University of Utrecht; Utrecht, The Netherlands; 12 December 2001.
• “The DEMOS Project”; Internationales Salzburger Rechtsinformatik Symposion 2002 (IRIS 2002); Salzburg, Austria; 21-23 February 2002;.
• “Online Mediation”; Internationales Salzburger Rechtsinformatik Symposion 2002 (IRIS 2002); Salzburg, Austria; 21-23 February 2002.
• Invited Panelist on the “Roadmap for Implementing Knowledge Management in the Public Sector” panel, during the 3rd Workshop on Knowledge Management in Electronic Government; Copenhagen, Denmark; 23-24 May 2002.
• “Discourse Support Systems for Deliberative Democracy”; Joseph Bell Center for Forensic Statistics and Legal Reasoning; Edinburgh, Scotland; 23 October, 2002.
• “Tutorial on Legal Argumentation”; International Conference on Artificial Intelligence and Law; Edinburgh, Scotland; 24 June 2003.
• “eGovernance and its Value for Public Adminstration”; French-German Workshop on Governance, Law and Technology; Marc-Blonch Center; Humboldt University; Berlin, Germany; 11 June 2004.
• “eGovernance: Reregulation or Deregulation?”; Heinz-Nixdorf Museums Forum; Paderborn, Germany; 26 January 2005.
• “eGovernance: Reregulation or Deregulation?”; French-German Workshop on New Instruments of Governance; CERSA, University of Paris; Paris, France; 10 February 2005.
• “Formalizing Legal Argument Schemes for Legal Reasoning Support Systems”; Internationales Salzburger Rechtsinformatik Symposion 2002; Salzburg, Austria; 24 February 2005.
• “Legal Knowledge-Based Systems for Public Administration – The Herford Case Study”; Internationales Salzburger Rechtsinformatik Symposion 2002; Salzburg, Austria; 24 February 2005.
• “Tutorial on Legal Argumentation”; International Conference on Artificial Intelligence and Law; Bologna, Italy; 6 June 2005.
• “Artificial Intelligence and Legal Theory at Law Schools”; Workshop on Artificial Intelligence and Legal Education; International Conference for Artificial Intelligence and Law; Bologna, Italy; 11 June 2005.
• “Artificial Intelligence Models of Legal Argumentation”; Meiji Gakuin University Graduate Law School; Tokyo, Japan; 29 June 2005.
• “Information Technology for Good Governance”; French-German Symposium on Governance, Law and Technology (September 2005), University of Paris; 19-20 September 2005
• “Evaluating Legal Arguments – A Formal Model:; International Congress on Artificial Intelligence and Law; University of Mexico, Mexico City; Mexico; 25-28 April 2006.
• “Governance-Technologien in der Verwaltung: Nutzen wissensbasierter Rechtsberatungssysteme (Legal Knowledge Systems) zur Verbesserung der Qualität und Effizienz von Verwaltungsprozessen”; 7. Kongresses “Neue Verwaltung”; Leipzig, Germany; 30-31 May 2006.
• “Visualizing Carneades Argument Graphs”; Conference on Visual and Graphic Representations of Evidence and Inference in Legal Settings, Cardozo Law School; New York City; 28-29 January, 2007.
• “Beherrschbare Komplexität von Rechtsnormen mit juristischen Informatiksystemen”; Bundesfinanzakademie; Berlin, Germany; 20 April 2007.
• “The Carneades Model of Argument and Burden of Proof”; Freie Universität Berlin; Fachbereich Philosophie und Geisteswissenschaften; Berlin; 26 April 2007.
• “20 Years of ICAIL – Reflections on the Field of AI and Law”; International Conference on Artificial Intelligence and Law (ICAIL 2007); Stanford University; Palo Alto, California; June 4-8, 2007.
• “The Carneades Model of Argument and Burden of Proof”; Universität Potsdam; Informatik Fakultät; Potsdam; 5 July 2007.
• “Supporting the Life Cycle of Legislation with Legal Knowledge Systems”; Legislative XML Summer School; European University Institute; Florenz, Italy; 14 September 2007.
• “Legal Knowledge Interchange Format (LKIF) –– Rules Tutorial”; Legislative XML Summer School; European University Institute; Florenz, Italy; 14 September 2007.
• Tutorial on “Hybrid Reasoning with Argumentation Schemes”; 8th Joint Conference on Knowledge - Based Software Engineering 2008 (JCKBSE 08); Piraeus, Greece; 25 August 2008.
• “Can Computer Models Help Improve the Quality of Legislation?”; French-German Symposium on the “Digital State”; Humboldt-Vidadrina School of Governance, Berlin; 20 October 2008.
• “The Legal Knowledge Interchange Format (LKIF)”; IX International Conference on Law via the Internet; Florence, Italy; 30-31 October 2008.
• “Visualizing Arguments with Carneades”; Freed-Orman Centre, Assumption University, Windsor, Canada; 2 November 2009.
• “Hybrid Reasoning with Argumentation Schemes”; Centre for Research in Reasoning, Argumentation & Rhetoric (CRRAR), University of Windsor, Windsor, Canada; 4 November 2009.
• “Carneades – Overview, Problems, Ideas”; Workshop on Computational Models of Argument; University of Leipzig; 3-4 December 2009.
• “Wie kommt das Wissen in die Fachverfahren? Neue Möglichkeiten regelbasierter Systeme”; Amt24-Jahresauftakt “E-Government 2010”; Berlin; 28 January 2010.
• “The Legal Knowledge Interchange Format (LKIF)”; 3rd Workshop on Legal Informatics and Legal Information Technology (LIT 2010); in conjunction with 13th International Conference on Business Information Systems (BIS 2010); Berlin, Germany; May 3, 2010.