This PowerPoint presentation explains the role which concepts from thesauri and taxonomies play in Linked Data (especially as they relate to SKOS). It briefly discusses ontologies in general before moving on to RDF Schema. Examples are given of how to defines classes of resources and the relations that connect them using RDFS. Focuses on defining hierarchical relations in support of inference (i.e., formally stating that membership in a narrower class automatically implies membership in a broader class).
Keywords: RDF Schema, Taxonomy, Thesaurus, Simple Knowledge Organization System (SKOS)
Author: Malaise, Veronique
Date created: 2017-03-28 04:00:00.000
Time required: P25M
Educational use: instruction
Educational audience: professional
Interactivity type: expositive
- Correctly uses sub-class relationships in support of inference.
- Correctly uses sub-property relationships in support of inference.
- Knows Simple Knowledge Organization System, or SKOS (2009), an RDF vocabulary for expressing concepts that are labeled in natural languages, organized into informal hierarchies, and aggregated into co
- Uses RDF Schema to express semantic relationships within a vocabulary.
- Understands that resources are declared to be members (instances) of classes using the property rdf:type.
- Understands that the properties of hierarchical subsumption within an RDF vocabulary — rdfs:subPropertyOf and rdfs:subClassOf — can also be used to express mappings between vocabularies.