ER02 Sessions Keynote Addresses Pre-Conference Tutorials Conference Tutorials Panel Demonstrations and Posters Session 1: Semantics and Meta-models Session 2: Principles of Ontology Session 3: Web Environments Session 4: Theory and Methods Session 5: Methods and Tools Session 6: Applications for Practice Session 7: Applying Ontology in Conceptual Modeling Session 8: System and Data Integration Session 9: Quality Assessment Session 10: XML & Object Systems ©2004 Association for Computing Machinery