Graph Data on the Web: extend the pivot, don’t reinvent the wheel

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Presentation transcript:

Graph Data on the Web: extend the pivot, don’t reinvent the wheel Olivier Corby et al. Inria – Wimmics team

Think in terms of an “RDF 2.0” RDF and Property Graphs are not in opposition They are requirements for an RDF 2.0 specification RDF 2.0 backward compatible with RDF 1.1 stack of standards There should not be another stack of graph data standards URI, IRI, URL, HTTP URI JSON RDF JSON LD N-Triple N-Quad Turtle/N3 TriG RDFS OWL SPARQL XML HTML RDF XML HTTP Linked Data CSV-LD R2RML GRDDL RDFa SHACL LDP Fabien Gandon, A Survey of the First 20 Years of Research on Semantic Web and Linked Data, 2018

Make Graph Data Interoperable Additional argument to triples Modality, timestamp, provenance, uncertainty Triple as subject or object of triple Assign URI to Triple Named graph with entailment regime Graph Data Entailment List datatype value SPARQL based rule language for RDF : construct where NB: AI on the Web requires knowledge-level interoperability

Secured and Trusted Graph Data Distribution Generalize SPARQL service clause to other sources that deliver RDF graph data Annotate SPARQL query with list of SPARQL endpoints URI Semantics for SPARQL federated queries : bnode, named graph, duplicate results, property path, etc. Standard canonical RDF graph representation Signing RDF graph

Graph Data Developer Friendly and Viewable API for graph data RDF graph style sheets à la CSS and Fresnel Transformation Language for RDF Linked Data Script Language cf. open source Corese semantic Web factory and server since 1999: http://corese.inria.fr/