RDF Validation RDF Validator http://purl.org/net/rdfval-demo. RDF validation requirements database http://purl.org/net/rdf-validation research paper about RDF validation Bosch, Eckert. Towards Description Set Profiles for RDF using SPARQL as Intermediate Language (DC 2014) Bosch, Eckert. Requirements on RDF Constraint Formulation and Validation (DC 2014) SPIN mappings Web Ontology Language (OWL 2) Description Set Profiles (DSP) links database of requirements on RDF constraint formulation and validation W3C RDF data shapes working group charter RDF application profiles task group