RDF (Resource Description Framework) vocabularies are used in Linked Data systems to describe data. The existing vocabularies are not capable of providing a full description of the data in a way which meets the specific requirements of the German National Library. Special, dedicated vocabularies based on existing vocabularies such as SKOS (Simple Knowledge Organization System) can therefore be defined for such purposes. The ontology models, including their content-structure, are published here to facilitate better understanding and use of the self-defined vocabularies. An example of this is the AgRelOn relationship ontology created as part of the ALEXANDRIA and CONTENTUS projects.
The Agent Relationship Ontology, AgRelOn, defines individuals' relationships to people and also to organisations. This is because agents (persons, organisations) and their interconnections are important cultural heritage factors. AgRelOn was developed to facilitate uniform cataloguing and semantic searches of and via relationships between agents. A set of almost 70 relationship types has been defined for this purpose. AgRelOn distinguishes between private acquaintances, group affiliation, correspondence partnerships, professional contacts, kinship, spiritual relations and relationships impacting on an individual's life, health or death (e.g. physician, murderer). Specific sub-relationships have been formulated for these types of relationship. Meta statements, i.e. information on statements, are supported as a means of achieving transparency in the reliability, origin and period of validity of facts. The modelled relationships are based on sample knowledge base searches and also on available data sources. The ontology does not therefore model all relationships existing anywhere and at any time, rather it is intentionally restricted. The model can, however, be supplemented to include further relationships.
Further vocabularies will be published here shortly.
Last update: 21.2.2012