Ontology-Driven Conceptual Modelling: Advanced Concepts. Nicola Guarino and Luc Schneider   View Paper (PDF)   Return to Conference Tutorials Abstract There is a growing awareness amongst conceptual modellers that their tools (languages and methodologies) are in need of theoretical elucidation and foundation. Conceptual modeling frameworks, e.g. ER or UML, presuppose ontological notions such as entity, object, class, attribute, association, and aggregation, which are still used in a more or less intuitive und unreflected way. Furthermore, the design and maintenance of large scale information systems presupposes well-understood and reusable top-level ontologies. DiSC'03 © 2003 Association for Computing Machinery