This volume collects the papers selected for presentation at the Third Inter- tional Conference on Metadata and Semantic Research (MTSR 2009), held in Milan at the University of Milano Bicocca (October 1-2, 2009). Metadataandsemanticresearchistodayagrowingcomplexsetofconceptual, theoretical, methodological, and technological frameworks, o?ering innovative computational solutions in the design and development of computer based s- tems.Fromthis perspective, researchersworkinginthisareamusttackleabroad range of issues on methods, results, and solutions coming from di?erent classic areas of this...

This book constitutes the post-proceedings of the International Workshop on Ontology, Conceptualization and Epistemology for Information Systems, Software Engineering and Service Sciences (ONTOSE 2010), held at the CAiSE 2010 conference in Hammamet, Tunisia, June, 2010.

The 10 papers presented in this volume were carefully revised and selected from 25 submissions. They are grouped in sections on enterprise and service architectures, ontology applications, ontology visualization and query expansion, and ontologies for services.