Using Prolog to build a Semantic Web reasoning engine for Advanced Clinical Applications.
Programming Languages Group UGent, 23 November 2011, Gent, Belgium.

Euler YAP Engine, a birds EYE view.
DTAI Group KULeuven, 7 April 2011, Leuven, Belgium.

SWIG implementation experience in Euler.
W3C Technical Plenary - Semantic Web Interest Group meet, 4 March 2004, Cannes-Mandelieu, France.

OWL implementation experience in Euler.
Fifth Meeting of the W3C Web Ontology Working Group, 9-10 January 2003, Manchester, UK.

W3C and the Semantic Web.
Semantic Web and Applications 2002, March 6th 2002, Gent, Belgium.

Inferential Semantics for Networked Image Data: Supporting the Derivation and Management of Semantic Attributes for Web-Based Multimedia Content.
EU Information Society Technologies (IST) Programme, Workshop Semantic Web Technologies, 22-23 November 2000, Luxembourg.