Rashif Rahman

Excited to dig into this! Thomas T. I also agree with you on the LPG front when it comes to OGMs (e.g. Neo4j-GQL in JS), having experienced building not only KGs but KG-backed apps in both paradigms. Few people venture into apps with RDF but those who do have clearly seen the value. An ontology, while not necessarily OWL or RDF but is accessibly so, can do wonders for driving user interfaces. You might have seen this in action with ShaCL. Now with LLMs in the picture, there are many more interesting ways to exploit RDF in the front-end.

See also https://www.youtube.com/live/kisaPHH7b8Y?feature=share for a couple of ideas. This one was a challenge for Cypher (Neo4j).

François S. yep! They have some documentation about this https://ontop-vkg.org/tutorial/federation/dremio/

Hi François S. sorry I am unable to share specific details as it was a client engagement. It was basically an integration and alignment effort based on an internally developed ontology, combining instance data across a MySQL, a PGSQL and a MongoDB database. Initially the SQL stuff was exposed at different SPARQL endpoints via Ontop but then we got the hint about Denodo/Dremio.

François S. I have worked on the exact use case example you describe successfully with Ontop. Linking entities across databases of different paradigms (relational, NoSQL). Then the RDF ones can simply integrate via SPARQL Federation. The only exception then is LPG, as I have not come across that use case, so am not sure how one would bring that into the fold seamlessly. I did come across some limitations wrt full SPARQL 1.1 support, but in general thanks to Benjamin C. and team the support on the Ontop (Google Group) forum has been fantastic. This support is one key criterion for consideration. Otherwise, I don't believe there is any other tool or combination of tools that enables this kind of virtualization with such ease.

Very helpful, thank you so much Catalina!

François S. is there an accessible example of a past presentation in the Business Use Case track? And another in the Masterclass/Workshop track would also be helpful. I have no doubt they're all fantastic but just wanted to have a couple of references.

I am also reminded of something from IPFS https://www.underlay.org/ (The world's distributed knowledge graph) but I don't see it anymore on https://docs.ipfs.tech/concepts/usage-ideas-examples/ (IPFS is a distributed file system). I wonder how this all ties into the Ontochain project https://cordis.europa.eu/project/id/957338. Surely a lot of interest in this space ("web3") now.

Hey Beegee A., I apologize that I don't really have good recommendations for tools that cover all three (analytics, semantics, visualization) well. I believe analytics at Spark scale is tough to match, and you can't really control viz in most DBs. Maybe someone else can chime in.