Invited Research Talks:
- Departmental seminar, Ontology Mapping in the Context of AQUA (a Question Answering System). Computing Department at Open University, England UK., July 14, 2008.
- Invited departmental seminar, Information Extraction Trends. IMSS at Reading University, England UK., July 17, 2006.
- Invited departmental seminar, Text Mining and Question Answering. Heriot Watt University, Edinburgh Scotland, UK. June 12, 2006.
- Invited departmental seminar, AQUA-Ontology-Driven Question Answering System. The Robert Gordon University, Scotland, UK. February 11 2004.
- Internal departamental seminar, AQUA: An Ontology-Driven Question Answering System. Mathematics and Computing Department, The Open University, England, UK. March 2003.
- Internal KMI seminar, AQUA: An Ontology-Driven Question Answering System. Knowledge Media Institute, The Open University, England, UK. March 2003.
- Internal departmental seminar. Pattern-Driven Information Extraction. Department of Computing Science, University of Aberdeen, Scotland, UK. April 2002.
- Invited departmental seminar, Pattern-Driven Information Extraction. Department of Computing Science, Brock University, Ontario, Canada. February 2002.
- Internal KMI seminar, Template-Driven Information Extraction. Knowledge Media Institute, the Open University, England, UK. August 2001.
- Invited internal seminar, Combining objects and Fuzzy Logic. IIMAS, National Autonomous University of Mexico, Mexico City, Mexico. December 1998.
- Invited internal seminar, Fril++: Object Oriented Programming with Uncertainty. Artificial Intelligence Department (Software Systems & Processes Group), Edinburgh University, Scotland, UK. December 1997.
- Internal seminar, Fril++: Object Oriented Fuzzy Logic Programming Language. The ACRC (Advanced Computing Research Centre), Bristol University, England, UK. December 1996.
- Internal seminar, Using Prolog Techniques to Guide Program Composition. The ACRC (Advanced Computing Research Centre), Bristol University, England, UK. December 1995.
- Invited seminar, Using Prolog Techniques to Guide Program Composition, CICESE, Ensenada Mexico, September 1995.
- Internal seminar, Using Prolog Techniques to Guide Program Composition. Artificial Intelligence department, Edinburgh University, Scotland, UK. May 1995.
- Internal seminar, A Techniques Editor for Prolog. Artificial Intelligence department, Edinburgh University, Scotland, UK. February 1992.
- Internal seminar, A Copy Structure-Based Prolog Interpreter. IIMAS, National Autonomous University of Mexico, Mexico City, Mexico. January 1988.