Relaxing and Restraining Queries for OBDA
AAAI, Volume abs/1808.02850, 2019.
In ontology-based data access (OBDA), ontologies have been successfully employed for querying possibly unstructured and incomplete data. In this paper, we advocate using ontologies not only to formulate queries and compute their answers, but also for modifying queries by relaxing or restraining them, so that they can retrieve either more ...More
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