Shqiponja Ahmetaj

Shqiponja Ahmetaj is an Assistant Professor in the Department of Knowledge-Based Systems at the Faculty of Informatics, TU Wien. She specializes in semantic web technologies, knowledge representation, and graph data management. Her research focuses on SHACL validation, ontology integration, and formal methods for constraint satisfaction in graph databases.

• Education:
  • PhD in Computer Science, TU Wien (2019): 'Rewriting approaches for ontology-mediated query answering.'
  • MSc in Computer Science, TU Wien (2013): 'Planning in graph databases under description logic constraints.'
• Roles:
  • Course instructor for 'Introduction to Artificial Intelligence,' 'Knowledge-based Systems,' and 'Semantic Technologies.'
  • Principal investigator in projects like FRESH (2021–2026) and SEE (2012–2016).

Research Interests: Her work addresses challenges in semantic web validation, ontology semantics, and graph data evolution. She develops formal methods for SHACL constraint validation, explanation generation for non-validation, and repair algorithms. Her contributions bridge the gap between semantic web standards and practical database systems.

Her recent publications focus on SHACL validation of evolving graphs, ontology-ontology interoperability, and consistent query answering under constraints. Projects like FRESH emphasize theoretical and applied aspects of SHACL in knowledge graphs.

Grants & Projects:

• FRESH (FWF, 2021–2026): 'Shapes in Graph Data: Theory and Implementation.'
• SEE (WWTF, 2012–2016): 'SPARQL Evaluation and Extensions.'

Advising: Supervised theses such as 'SHACL validation of evolving RDF graphs' (2023) and 'A metaheuristic approach to crowdsourced package delivery' (2023).

Labs/Teams: Active in TU Wien's research groups on semantic technologies and knowledge representation, collaborating with international institutions on projects like OMEGA and KtoAPP.