4 papers
Tractable Query Answering under Epistemic Confidentiality Policies in DL Ontologies (extended version)
Lorenzo Marconi, Daniela Rieti, Riccardo Rosati +1
We study Controlled Query Evaluation (CQE), a declarative approach to confidentiality-preserving data access, in the context of Description Logic (DL) ontologies, and for confident…
CQE under Epistemic Dependencies: Algorithms and Experiments (extended version)
Lorenzo Marconi, Flavia Ricci, Riccardo Rosati
We investigate Controlled Query Evaluation (CQE) over ontologies, where information disclosure is regulated by epistemic dependencies (EDs), a family of logical rules recently prop…
Controlled Query Evaluation through Epistemic Dependencies
Gianluca Cima, Domenico Lembo, Lorenzo Marconi +2
In this paper, we propose the use of epistemic dependencies to express data protection policies in Controlled Query Evaluation (CQE), which is a form of confidentiality-preserving…
Consistent Query Answering for Existential Rules with Closed Predicates
Lorenzo Marconi, Riccardo Rosati
Consistent Query Answering (CQA) is an inconsistency-tolerant approach to data access in knowledge bases and databases. The goal of CQA is to provide meaningful (consistent) answer…