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A semantic mapping of VRA Core 4.0 to the CIDOC conceptual reference model
(2011)
In the recent decades, we have witnessed a tremendous proliferation of metadata schemas, particularly in the cultural heritage domain. As a consequence, there is a growing need to integrate these schemas to solve a number ...
Query Transformation in a CIDOC CRM Based Cultural Metadata Integration Environment
(2010)
The wide use of a number of cultural heritage metadata schemas imposes the development of new interoperability techniques that facilitate unified access to cultural resources. In this paper, we focus on the ontology based ...
Defining a semantic mapping of VRA Core 4.0 to the CIDOC conceptual reference model
(2012)
In the recent decades, we have witnessed a tremendous proliferation of metadata schemas, particularly in the cultural heritage domain. As a consequence, cultural heritage communities face a growing need to integrate these ...
Modelling the Public Sector Information through CIDOC Conceptual Reference Model
(2010)
Nowadays, due to the growing development of eGovernment information systems, there is an increasing need to handle Public Sector Information (PSI) in a homogeneous way. Ontologies are currently a powerful tool to act as ...
Automatic Generation of Crosswalks through CIDOC CRM
(2012)
In this paper, we propose an algorithm that automatically generates crosswalks between metadata schemas. The algorithm exploits the mappings between the schemas and the CIDOC Conceptual Reference Model (CRM), defined as ...
Mapping cultural metadata schemas to CIDOC conceptual reference model
(2010)
Managing heterogeneous data is a challenge for cultural heritage institutions as they host and develop various collections with heterogeneous types of material, described by different metadata schemas. In this paper, we ...
Union rewritings for XPath fragments
(2011)
In this paper, we study the problem of finding an equivalent rewriting of an XPath query using multiple views, and we show that the union operator may be required in order to find such a rewriting. In particular, focusing ...
Query containment under bag and bag-set semantics
(2010)
Conjunctive queries (CQs) are at the core of query languages encountered in many logic-based research fields such as AI, or database systems. The majority of existing work assumes set semantics but often in real applications ...