3 papers
cs.DB2026
Query-Specific Pruning of RML Mappings (Extended Version)
Sitt Min Oo, Olaf Hartig
Current approaches for knowledge graph construction with RML focus on full RDF graph materialization without considering user queries, which is inefficient in dynamic query environ…
cs.DB2025
Poseidon: A OneGraph Engine
Brad Bebee, Ãmit V. Ãatalyürek, Olaf Hartig +5
We present the Poseidon engine behind the Neptune Analytics graph database service. Customers interact with Poseidon using the declarative openCypher query language, which enables…
cs.DB2025
An Algebraic Foundation for Knowledge Graph Construction (Extended Version)
Sitt Min Oo, Olaf Hartig
Although they exist since more than ten years already, have attracted diverse implementations, and have been used successfully in a significant number of applications, declarative…