Query Answering for OWL-DL with Rules [chapter]

Boris Motik, Ulrike Sattler, Rudi Studer
<span title="">2004</span> <i title="Springer Berlin Heidelberg"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/2w3awgokqne6te4nvlofavy5a4" style="color: black;">Lecture Notes in Computer Science</a> </i> &nbsp;
Both OWL-DL and function-free Horn rules are decidable fragments of first-order logic with interesting, yet orthogonal expressive power. A combination of OWL-DL and rules is desirable for the Semantic Web; however, it might easily lead to the undecidability of interesting reasoning problems. Here, we present a decidable such combination where rules are required to be DL-safe: each variable in the rule is required to occur in a non-DL-atom in the rule body. We discuss the expressive power of
more &raquo; ... a combination and present an algorithm for query answering in the related logic SHIQ extended with DL-safe rules, based on a reduction to disjunctive programs.
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/978-3-540-30475-3_38">doi:10.1007/978-3-540-30475-3_38</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/46r3wvfzsrdv7i6gkjvkuj75yy">fatcat:46r3wvfzsrdv7i6gkjvkuj75yy</a> </span>
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