I use Palantir Foundry extensively, and its ontology manager a LOT. To summarise, they store tables in a Spark cluster (they call that datasets). And have a OBDA mapper (less powerful than Ontop, but you see the idea) to feed a Elasticsearch-based graph database from those [semantic-less] tables . On top of that graph database are a really nice low code/noCode web app designer, fully ontology-driven. And a search engine that helps browse the instances of the graph database by search terms+types, and apply visualisation templates.
The real gem in their stack is pipelineBuilder. A fully visual ETL to convert datasets into other datasets. EXTREMELY convenient, and extremely scalable thanks to Spark. Another gem that would be interesting for everyone in the SemWeb community to look at is Quiver, which allows to define [kind of] queries on top of the graph database. The UI is really strong. Hope it gives you some pointers. I am pretty sure YouTube can be your friend now, from this short summary. On Sat, 8 Nov 2025 at 04:20, Xingmin Zhang <[email protected]> wrote: > Hi everyone, > > I am curious about Palantir and how they use ontology. Does anyone have a > recommendation of good materials (more depth and less commercial). I know > very little about the company but very curious about their tech. Thanks! >
