Shqiponja Ahmetaj

According to our database, Shqiponja Ahmetaj authored at least 24 papers between 2014 and 2023.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of three.

2023

Reconciling SHACL and Ontologies: Semantics and Validation via Rewriting.

Anouk Oudshoorn, Shqiponja Ahmetaj, Magdalena Ortiz, Mantas Simkus

Proceedings of the ISWC 2023 Posters, 2023

Reconciling SHACL and Ontologies: Semantics and Validation via Rewriting (Extended Abstract).

Shqiponja Ahmetaj, Magdalena Ortiz, Anouk Michelle Oudshoorn, Mantas Simkus

Proceedings of the 36th International Workshop on Description Logics (DL 2023) co-located with the 20th International Conference on Principles of Knowledge Representation and Reasoning and the 21st International Workshop on Non-Monotonic Reasoning (KR 2023 and NMR 2023)., 2023

2022

Magic Shapes for SHACL Validation.

Shqiponja Ahmetaj, Bianca Löhnert, Magdalena Ortiz, Mantas Simkus

Proc. VLDB Endow., 2022

Formalizing Property Constraints in Wikidata.

Nicolas Ferranti, Axel Polleres, Jairo Francisco de Souza, Shqiponja Ahmetaj

Proceedings of the 3rd Wikidata Workshop 2022 co-located with the 21st International Semantic Web Conference (ISWC2022), 2022

Repairing SHACL Constraint Violations Using Answer Set Programming.

Shqiponja Ahmetaj, Robert David, Axel Polleres, Mantas Simkus

Proceedings of the Semantic Web - ISWC 2022, 2022

2021

Magic Shapes for Validation in SHACL.

Shqiponja Ahmetaj, Bianca Loehnert, Magdalena Ortiz, Mantas Simkus

Proceedings of the ISWC 2021 Posters, 2021

Explanations for Non-validation in SHACL.

Shqiponja Ahmetaj, Robert David, Magdalena Ortiz, Axel Polleres, Bojken Shehu, Mantas Simkus

Proceedings of the ISWC 2021 Posters, 2021

Reasoning about Explanations for Non-validation in SHACL.

Shqiponja Ahmetaj, Robert David, Magdalena Ortiz, Axel Polleres, Bojken Shehu, Mantas Simkus

Proceedings of the 18th International Conference on Principles of Knowledge Representation and Reasoning, 2021

Reasoning about Explanations for Non-validation in SHACL (Extended Abstract).

Shqiponja Ahmetaj, Robert David, Magdalena Ortiz, Axel Polleres, Bojken Shehu, Mantas Simkus

Proceedings of the 34th International Workshop on Description Logics (DL 2021) part of Bratislava Knowledge September (BAKS 2021), 2021

Ontology-Enriched Query Answering on Relational Databases.

Shqiponja Ahmetaj, Vasilis Efthymiou, Ronald Fagin, Phokion G. Kolaitis, Chuan Lei, Fatma Özcan, Lucian Popa

Proceedings of the Thirty-Fifth AAAI Conference on Artificial Intelligence, 2021

2020

Rewriting Approaches for Ontology-Mediated Query Answering.

Shqiponja Ahmetaj

Künstliche Intell., 2020

Polynomial rewritings from expressive Description Logics with closed predicates to variants of Datalog.

Shqiponja Ahmetaj, Magdalena Ortiz, Mantas Simkus

Artif. Intell., 2020

2018

Rewriting Guarded Existential Rules into Small Datalog Programs.

Shqiponja Ahmetaj, Magdalena Ortiz, Mantas Simkus

Proceedings of the 21st International Conference on Database Theory, 2018

2017

Managing Change in Graph-Structured Data Using Description Logics.

Shqiponja Ahmetaj, Diego Calvanese, Magdalena Ortiz, Mantas Simkus

ACM Trans. Comput. Log., 2017

2016

Polynomial Datalog Rewritings for Expressive Description Logics with Closed Predicates.

Shqiponja Ahmetaj, Magdalena Ortiz, Mantas Simkus

Proceedings of the Twenty-Fifth International Joint Conference on Artificial Intelligence, 2016

The Challenge of Optional Matching in SPARQL.

Shqiponja Ahmetaj, Wolfgang Fischl, Markus Kröll, Reinhard Pichler, Mantas Simkus, Sebastian Skritek

Proceedings of the Foundations of Information and Knowledge Systems, 2016

Polynomial Disjunctive Datalog Rewritings of Instance Queries in Expressive Description Logics.

Shqiponja Ahmetaj, Magdalena Ortiz, Mantas Simkus

Proceedings of the 29th International Workshop on Description Logics, 2016

Polynomial Datalog Rewritings for Ontology Mediated Queries with Closed Predicates.

Shqiponja Ahmetaj, Magdalena Ortiz, Mantas Simkus

Proceedings of the 10th Alberto Mendelzon International Workshop on Foundations of Data Management, 2016

2015

Towards Reconciling SPARQL and Certain Answers.

Shqiponja Ahmetaj, Wolfgang Fischl, Reinhard Pichler, Mantas Simkus, Sebastian Skritek

Proceedings of the 24th International Conference on World Wide Web, 2015

DL-Lite and Conjunctive Queries Extended by Optional Matching.

Shqiponja Ahmetaj, Wolfgang Fischl, Reinhard Pichler, Mantas Simkus, Sebastian Skritek

Proceedings of the 28th International Workshop on Description Logics, 2015

Towards Reconciling SPARQL and Certain Answers (Extended Abstract).

Shqiponja Ahmetaj, Wolfgang Fischl, Reinhard Pichler, Mantas Simkus, Sebastian Skritek

Proceedings of the 9th Alberto Mendelzon International Workshop on Foundations of Data Management, Lima, Peru, May 6, 2015

2014

Managing Change in Graph-structured Data Using Description Logics (long version with appendix).

Shqiponja Ahmetaj, Diego Calvanese, Magdalena Ortiz, Mantas Simkus

CoRR, 2014

Planning Problems for Graph Structured Data in Description Logics.

Shqiponja Ahmetaj, Diego Calvanese, Magdalena Ortiz, Mantas Simkus

Proceedings of the Informal Proceedings of the 27th International Workshop on Description Logics, 2014

Planning and Change in Graph Structured Data under Description Logics Constraints.

Shqiponja Ahmetaj, Diego Calvanese, Magdalena Ortiz, Mantas Simkus

Proceedings of the 8th Alberto Mendelzon Workshop on Foundations of Data Management, 2014