WordNet: a lexical database for English
Communications of the ACM
IJDL special issue on complex digital objects: Guest editors' introduction
International Journal on Digital Libraries
A framework for distributed digital object services
International Journal on Digital Libraries
DBpedia - A crystallization point for the Web of Data
Web Semantics: Science, Services and Agents on the World Wide Web
A survey of techniques for achieving metadata interoperability
ACM Computing Surveys (CSUR)
Augmenting Europeana content with linked data resources
Proceedings of the 6th International Conference on Semantic Systems
Linked Data
Scholarly publishing and linked data: describing roles, statuses, temporal and contextual extents
Proceedings of the 8th International Conference on Semantic Systems
Ontology paper: FaBiO and CiTO: Ontologies for describing bibliographic resources and citations
Web Semantics: Science, Services and Agents on the World Wide Web
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In this paper, we discuss some issues related to digital libraries that are born as aggregators of cultural heritage resources harvested from different distributed digital repositories. Whenever such aggregations fall short of providing a real service to users, most of the time this is due to the inadequacy of the data or conceptual model proposed for the mapping and exposed to the final user. Our aim is to enhance the formal representation of cultural heritage materials, reasoning about some key concepts to improve the quality of the description of digital resources by refining the conceptual model. In order to discuss about these issues, we focus particularly on Europeana, the principal European Digital Library, as the foremost and most paradigmatic example of aggregators, and on the Europeana Data Model EDM as the conceptual model on which metadata from different repositories are mapped in Europeana.