Schema of the SemRepo Knowledge Graph (click to enlarge):

SemRepo reuses and links to several established RDF vocabularies to ensure interoperability:
https://semrepo.org/class/ — SemRepo classes
https://semrepo.org/property/ — SemRepo properties
https://linkedpaperswithcode.com/class/ — LPWC classes
https://semopenalex.org/class/ — SemOpenAlex classes
https://w3id.org/mlsea/pwc/ — MLSea Software entities
http://purl.org/dc/terms/ — Dublin Core Terms (DCAT)
http://purl.org/spar/fabio/ — FaBiO: Bibliographic ontology
http://xmlns.com/foaf/0.1/ — FOAF: Friend of a Friend
http://www.w3.org/1999/02/22-rdf-syntax-ns# — RDF syntax namespace
Linked Dataset Description