Abstract
In this paper we define an extension of the description logic \(\mathcal {SROIQ}\) based on a preferential semantics to introduce a notion of typicality in the language which allows defeasible inclusions to be represented in a knowledge base. We define a polynomial encoding of the resulting language into \(\mathcal {SROIQ}\), thus showing that reasoning in the preferential extension of \(\mathcal {SROIQ}\) has the same complexity as reasoning in \(\mathcal {SROIQ}\).
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Notes
- 1.
The symmetric and transitive role assertions Sym(R) and Tra(R) can be replaced by suitable role inclusion axioms, respectively, \(R^- \sqsubseteq R\) and \(R \circ R \sqsubseteq R\) [16].
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Acknowledgement
We thank the anonymous referees for their helpful comments. This research is partially supported by INDAM - GNCS Project 2015 Description Logics and Nonmonotonic reasoning and by Compagnia di San Paolo Project GINSENG.
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Giordano, L., Gliozzi, V. (2015). Encoding a Preferential Extension of the Description Logic \(\mathcal {SROIQ}\) into \(\mathcal {SROIQ}\) . In: Esposito, F., Pivert, O., Hacid, MS., Rás, Z., Ferilli, S. (eds) Foundations of Intelligent Systems. ISMIS 2015. Lecture Notes in Computer Science(), vol 9384. Springer, Cham. https://doi.org/10.1007/978-3-319-25252-0_27
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