Preface.- UI Ont - A Formal Ontology on User Interfaces and Interactions.- Generating Models of Recommendation Processes out of Annotated Ontologies.- Cognitive Semantic Categories as a Basis for a Prototype Adaptive Information System.- A Semantic Model for Adaptive Collaboration Support Systems.- A Semantics-Based, End-User-Centered Information Visualization Process for Semantic Web Data.- PASTREM: Proactive Ontology Based Recommendations for Information Workers.- Visualizing Search Results of Linked Open Data.- A Context-Aware Shopping Portal Based on Semantic Models.- Semantic Models for Interactive Systems: The Case of Tagging and Folksonomies.- User Interaction Templates for the Design of Lifelogging Systems.