Entries in the Research Data Australia catalogue are defined using a metadata schema that makes use of the RIF-CS vocabularies. These are hosted at Research Vocabularies Australia here: https://vocabs.ardc.edu.au/viewById/1.
Accessing the current version
The current version of the vocabularies can be accessed using the special slug
The SPARQL endpoint is here: https://vocabs.ardc.edu.au/repository/api/sparql/rifcs-current
The Linked Data (SISSVoc) endpoints are here: https://vocabs.ardc.edu.au/repository/api/lda/rifcs-current/concept