6 papers
Multi-center Medical Data Mining with FL-Net - A One-stop Shop for Federated Learning
Simon Süwer, Julian Klemm, Elisa Acitelli +39
Federated learning enables collaborative training without sharing patient-level data, but most studies remain simulations. Based on five requirements derived from the literature, w…
Tractable Query Answering under Epistemic Confidentiality Policies in DL Ontologies (extended version)
Lorenzo Marconi, Daniela Rieti, Riccardo Rosati
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…
Consistent Query Answering for Expressive Constraints under Tuple-Deletion Semantics
Lorenzo Marconi, Riccardo Rosati
We study consistent query answering in relational databases. We consider an expressive class of schema constraints that generalizes both tuple-generating dependencies and equality-…