Semantic Web technologies are strategic in order to fulfill the openness requirement of Self-Aware Pervasive Service Ecosys-tems. In fact they provide agents with the ability to cope with distributed data, using RDF to represent information, ontologies to describe relations between concepts from any domain (e.g. equivalence, specialization/extension, and so on) and reasoners to extract implicit knowledge. The aim of this thesis is to study these technologies and design an extension of a pervasive service ecosystems middleware ca-pable of exploiting semantic power, and deepening performance implications.
