Gianluca Cima

Querying OWL 2 QL ontologies under the SPARQL Metamodeling Semantics Entailment Regime.

2017 · IRIS Research product catalog (Sapienza University of Rome)

OWL2QL is the profile of OWL2 targeted to Ontology-Based Data Access (OBDA) scenarios, where large amount of data are to be accessed, and thus answering conjunctive queries over data is the main task. However, this …

QDEF and Its Approximations in OBDM

2021 · arXiv (Cornell University)

Given an input dataset (i.e., a set of tuples), query definability in Ontology-based Data Management (OBDM) amounts to find a query over the ontology whose certain answers coincide with the tuples in the given dataset. …