Proof and Trust in the OpenAGRIS Implementation

Yves Jaques, Stefano Anibaldi, Fabrizio Celli, Imma Subirats, Armando Stellato, Johannes Keizer


The AGRIS repository is a bibliographic database covering
almost forty years of agricultural research. Following the conversion of its indexing
thesaurus AGROVOC into a concept-based vocabulary, the decision was made to express the
entire AGRIS repository in RDF as Linked Open Data. As part of this exercise, a semantic
mashup named OpenAGRIS was developed in order to access the records and use them to
dynamically display related data from external systems through both SPARQL queries and
traditional web services. The overall process raised numerous issues regarding the
relative lack of administrative metadata required to compellingly address the top proof
and trust layers of the semantic web stack, both within the AGRIS repository and in
external data dynamically pulled into OpenAGRIS. The team began by disambiguating and
RDF-izing the journals in which the articles were published but quickly realized this
was only the beginning of a series of necessary activities in moving from a closed to an
open world paradigm. Further disambiguation of institutions, authors and AGRIS centres
as well as the use of named graphs, VoiD properties and emerging provenance and quality
indicator models are discussed and evaluated.