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Comment by WolfOliver | Hacker News Reader

I think neo4j is used for those purposes. I'm not quite sure yet if they implement RDF or some custom/other concept.

It's not so much the data model, as the interlinkedness (for lack of a better term) that was very much posited as the way forward.

In the Bib world things like the Virtual International Authority File (VIAF) so every system talking about the author Charles Dickens used the exact same identifier for him, allowing different data stores to be easily traversed and linked together, by design.

I'm in a similar space (bibliographic metadata, DOIs etc) but not too familiar with this area. Did the desire for interlinkedness go away? What in particular changed? Was an authority file seen as a replacement for a more organic RDF model?

I've not been in the space for 6 years at this point, but a lot of the "cool stuff" being done seems to have died down - partly this was some bad decisions (IMHO) taken by the committee looking to replace Marc21 (Bibframe?), running Quad Stores at scale is still pretty niche etc.

Neo4j is, mostly, a very different kind of graph store. A Labeled Property Graph, and not a Semantic Knowledge Graph which is the kind of graph commonly associated with RDF.

I write “mostly” because recently neo4j has a “neosemantics” project which handles RDF. It is all pretty standards compliant RDF though, nothing custom at all.

For more information this may be a good start: https://neo4j.com/blog/rdf-triple-store-vs-labeled-property-...

RDF* extends RDF to support these property graphs.

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