6 citations · 11 across the 6 of their papers we have counts for
6 papers
sheval: An RDF data shapes evaluation tool and test-suite for recursive shapes
Shqiponja Ahmetaj, Iovka Boneva, Jan Hidders +8
Two different languages have been developed to validate RDF data based on the concept of a shape: ShEx and SHACL. In each language it is possible to define a shape that refers to i…
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…
SHACL Validation under Graph Updates (Extended Paper)
Shqiponja Ahmetaj, George Konstantinidis, Magdalena Ortiz +2
SHACL (SHApe Constraint Language) is a W3C standardized constraint language for RDF graphs. In this paper, we study SHACL validation in RDF graphs under updates. We present a SHACL…
Common Foundations for SHACL, ShEx, and PG-Schema
S. Ahmetaj, I. Boneva, J. Hidders +11
Graphs have emerged as an important foundation for a variety of applications, including capturing and reasoning over factual knowledge, semantic data integration, social networks,…
Consistent Query Answering over SHACL Constraints
Shqiponja Ahmetaj, Timo Camillo Merkl, Reinhard Pichler
The Shapes Constraint Language (SHACL) was standardized by the World Wide Web as a constraint language to describe and validate RDF data graphs. SHACL uses the notion of shapes gra…
Polynomial Rewritings from Expressive Description Logics with Closed Predicates to Variants of Datalog
Shqiponja Ahmetaj, Magdalena Ortiz, Mantas Simkus
In many scenarios, complete and incomplete information coexist. For this reason, the knowledge representation and database communities have long shown interest in simultaneously su…