The Semantic Web: RDF(S) inference; languages and models for navigating and querying Linked Open Data; Ontology Matching; Trust of ontology alignments; completeness of query answering; maps of the Web.
Graph databases: languages and models for querying (distributed) graphs; preferences in graph query languages.
Big Data sampling: approximate query answering, privacy-preserving Big Data publishing.
Differential Privacy and Neural Networks.
Web cartography: creation of Web maps; algebra of Web maps.
Peer to Peer Systems: Semantic Overlay Networks, Distributed architecture for Semantic Service Discovery, Distributed architectures for knowledge management, Content consistency.
Natural language processing: Semantic Relatedness and Similarity, Multilingual aspects of Wikipedia
Adversarial social network analysis: Community Hiding
