4 papers
Graph-Native Normalization
Johannes Schrott, Maxime Jakubowski, Katja Hose
In recent years, knowledge graphs (KGs) - in particular in the form of labeled property graphs (LPGs) - have become essential components in a broad range of applications. Although…
Validation of graph databases against PG-Schema
Jacek Ciszewski, Jakub KÅos, Maxime Jakubowski +2
The problem of validating a given graph database instance against a given PG-Schema graph type without integrity constraints is NP- complete in terms of combined complexity and in…
A Community Survey on SHACL and ShEx: Briding Gaps in RDF Validation
Maxime Jakubowski, Dominik Tomaszuk, Katja Hose
This paper examines RDF validation practices and challenges to understand stakeholder applications, their needs, and identify areas for improvement in technologies and methodologie…
Common Foundations for Recursive Shape Languages
Shqiponja Ahmetaj, Iovka Boneva, Jan Hidders +9
As schema languages for RDF data become more mature, we are seeing efforts to extend them with recursive semantics, applying diverse ideas from logic programming and description lo…