1. Contextual hierarchy driven ontology learning / Lobna Karoui -- 2. A review of fuzzy models for the Semantic Web / Hailong Wang -- 3. Improving storage concepts for semantic models and ontologies / Edgar Weippl -- 4. Ontologies and intelligent agents / Kostas Kolomvatsos -- 5. Probabilistic models for the Semantic Web / Livia Predoiu -- 6. Automatic semantic annotation using machine learning / Jie Tang ... [et al.] -- 7. Paving the way to an effective and efficient retrieval of data over semantic overlay networks / Federica Mandreoli ... [et al.] -- 8. SWARMS / Jie Tang, Bangyong Liang, Juanzi Li -- 9. Modeling and querying XML based P2P information systems / Alfredo Cuzzocrea -- 10. Applying Semantic Web to e-tourism / Danica Damljanovic, Vladan Devedžic -- 11. Semantic Web in ubiquitous mobile communications / Anna Zhdanova, Klaus Moessner -- 12. Design diagrams as ontological sources / Kalapriya Kannan.