International Conference on Ontologies, DataBases, and Applications of Semantics for Large Scale Information Systems (ODBase 2003).- Incrementally Maintaining Materializations of Ontologies Stored in Logic Databases.- Ontology Translation on the Semantic Web.- Compound Term Composition Algebra: The Semantics.- Dynamic Pattern Mining: An Incremental Data Clustering Approach.- International Conference on Cooperative Information Systems (CoopIS 2003).- A Knowledge Network Approach for Implementing Active Virtual Marketplaces.- Stream Integration Techniques for Grid Monitoring.- 6th IFIP TC 11 WG 11.5 Working Conference on Integrity and Internal Control in Information Systems (IICIS 2003).- Information Release Control: A Learning-Based Architecture.- Enforcing Semantics-Aware Security in Multimedia Surveillance.