State-of-the-Art in Group Recommendation and New Approaches for Automatic Identification of Groups.-Reputation-based Trust Disffusion in Complex Socio-Economic Networks.-From Unstructured Web Knowledge to Plan Descriptions.- Semantic Desktop: a Common Gate on Local and Distributed Indexed Resources.- An Agent-Oriented Architecture for Researcher Proling and Association using Semantic Web Technologies.- Integrating Peer-to-Peer and Multi-Agent Technologies for the Realization of Content Sharing Applications.- Intelligent Advisor Agents in Distributed Environments.- Agent-based Search and Retrieval in Virtual World Environments.- Contextual Data Management and Retrieval: a Self-organized Approach.- A Relational Approach to Sensor Network Data Mining.- Content-based retrieval of distributed multimedia conversational data.- Multimodal Aggregation and Recommendation Technologies Applied to Informative Content Distribution and Retrieval.- Using a network of scalable ontologies for intelligent indexing and retrieval of visual content.- Integrating Sense discrimination in a Semantic Information Retrieval System.- Intelligent Information Processing in Smart Grids and Consumption Dynamics.