Researcher on Artificial Intelligence, Knowledge Engineering, Semantic Web and We Science. Recent activities * Data modeling and analysis for consumer platforms including mobile phone and TVs. * Member of the Web Ontology Language (OWL) Working Group of W3C for the design of OWL 2 language. * Research and development of applications based on semantic wikis. * Application of rules in integrity constraints and policy languages. * Modular ontology languages and distributed reasoning * Context modeling for Semantic Web * Financial data modeling for Semantic Web