This work is a revision of the doctoral dissertation of Eduardo Mena pre sented to the Department of Computer Science and System Engineering at the University o

We can now say that it is really a big pleasure for us to welcome all of you to the proceedings of CAiSE 2005 which was held in Porto.

These arethe proceedingsof the Fourth InternationalWorkshopon Cooperative Information Agents, held in Boston Massachusetts, USA, July 7-9, 2000. Cooperative inf

Ontological Engineering refers to the set of activities that concern the ontology development process, the ontology life cycle, the methods and methodologies fo

This book constitutes the refereed post-proceedings of the First and Second VLDB Workshop Ontologies-based techniques for DataBases and Information Systems, hel