Knowledge representation standards

The adoption of semantic standards in RTVE has allowed the improvement of internal and external interoperability, facilitating the linking of data and enabling the enrichment of information based on the linking and hybridization with other content representation ontologies.

The RTVE Grafo project sought to implement a European standard in the spanish media sector. As an EBU member; and participant in the group EBU-AIM, which manages and promotes the use of standard metadata systems and specifically EBUCorePlus, it was agreed that this standard would be used, although adapted to the idiosyncrasy of RTVE's audiovisual production.

EBUCorePlus is a media ontology, developed by the EBU Metadata Modeling Working Group as an open source project, and is the continuation of two EBU ontologies: EBUCore and CCDM (Class Conceptual Data Model).

Ontologies allow machines to recognize entities in the world and, in general, to structure and organize information in a symbolic and precise way, which in turn enables more effective data processing, as well as building systems and applications that are more humanized and useful for people.

Thus, an ontology is a formal representation of a set of concepts and their relationships within a domain of knowledge written in a technical programming language understandable by machines. In practice it functions for machines as the implicit system of classes used by the human mind to identify, distinguish and classify entities in the world. The ontology that RTVE has built on top of EBUCorePlus for the RTVE Grafo project defines concepts, along with their relationships and properties, and includes axioms that establish rules about these concepts. RTVE's ontology uses technical programming languages and standards established by W3C such as OWL and RDF, and will be key for its artificial intelligence and knowledge representation program, as well as for its participation in the semantic web and Linked Open Data Web construction program.

RTVE publishes its ontology so that the detailed description of each of the classes, relations and attributes that compose the knowledge domain of RTVE Play can be consulted. This technical documentation website allows to consult the detailed description of the classes and attributes of the ontology, its visualization in interactive format and its download in OWL format.

https://www.rtve.es/en/graph/ontologies/rtveplay/

Given RTVE's position in the audiovisual market in Spain and in the Spanish language, the adoption and localization of an ontological standard of reference such as EBUCorePlus will help to standardize and improve the quality and interoperability of data, not only with the aim of improving integration and access to its own content, but also with the aim of raising the standards of the audiovisual industry in Spain.