Building Recommendation Systems on Social Data @KTH - FutureFriday - March 2014 Achieving Optimal Privacy in Trust-Aware Collaborative Filtering Recommender Systems Social Trust-aware Recommendation System: A T-Index Approach SWAHA08 - Personalizing Human Interaction through Hybrid Ontological Profiling: Cultural Heritage Case Study Security in Semantic Web Services Modeling and Representing Trust Relations in Semantic Web-Driven Social Networks