Abstract
We study a Horn fragment called Horn-\(\mathcal{R}eg^I\) of the regular description logic with inverse \(\mathcal{R}eg^I\), which extends the description logic \(\mathcal{ALC}\) with inverse roles and regular role inclusion axioms characterized by finite automata. In contrast to the well-known Horn fragments \(\mathcal{EL}\), DL-Lite, DLP, Horn-\(\mathcal{SHIQ}\) and Horn-\(\mathcal{SROIQ}\) of description logics, Horn-\(\mathcal{R}eg^I\) allows a form of the concept constructor “universal restriction” to appear at the left hand side of terminological inclusion axioms, while still has PTime data complexity. Namely, a universal restriction can be used in such places in conjunction with the corresponding existential restriction. We provide an algorithm with PTime data complexity for checking satisfiability of Horn-\(\mathcal{R}eg^I\) knowledge bases.
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Nguyen, L.A., Nguyen, TBL., Szałas, A. (2014). On Horn Knowledge Bases in Regular Description Logic with Inverse. In: Huynh, V., Denoeux, T., Tran, D., Le, A., Pham, S. (eds) Knowledge and Systems Engineering. Advances in Intelligent Systems and Computing, vol 244. Springer, Cham. https://doi.org/10.1007/978-3-319-02741-8_6
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DOI: https://doi.org/10.1007/978-3-319-02741-8_6
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