Classicists working on digital projects that involve data are encouraged to link their data to the semantic web. If you are new to the topic, start here (Linked open data).
In thinking about new vocabularies, whether for subjects, predicates, or objects of triples, one should begin with a survey of what already exists. By using one another's vocabularies, we reinforce the interoperability, and therefore utility, of our data. And it saves us the time needed to invent a taxonomy.
Sets of RDF vocabularies tend to fall in two groups: (1) terms for items, persons, concepts, and other resources and (2) terms for the relations that hold between resources. The first group correspond to what many scholars call controlled vocabulary, and they frequently show up as the subjects and objects of triples. The second corresponds to the vocabularies used in ontologies (e.g., RDFS, OWL, SKOS), and frequently show up as the predicates of triples.
- 1 Resources (names of things; ideal for subjects and objects of triples)
- 2 Ontologies (terms for relationships; ideal for predicates of triples)