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M.-P. Andresel, Y.A. Ibanez Garcia, M. Ortiz de la Fuente, M. Simkus:
"Taming Complex Role Inclusions for DL-Lite";
Vortrag: 31st International Workshop on Description Logics (DL 2018), Tempe, Arizona, USA; 27.10.2018 - 29.10.2018; in: "Proceedings of the 31st International Workshop on Description Logics co-located with 16th International Conference on Principles of Knowledge Representation and Reasoning (KR 2018), Tempe, Arizona, US, October 27th - to - 29th, 2018.", CEUR-WS.org, (2018), Paper-Nr. 05, 12 S.

Hierarchical data, where facts may refer to different categories in an ordered hierarchy, in the style of the multi-dimensional data
model, arises in many applications. When these hierarchies are not captured by subclasses, but require navigation along roles, this data cannotbe satisfactorily queried in the standard OBDA setting based on first-order rewritable languages like DL-Lite. For this reason, we study how to extend DL-Lite with complex role inclusions (CRIs) in a way that overcomes this limitation. Complex role inclusions (CRIs) cause the loss offirst-order rewritability in general, but we study meaningful restrictions which guarantee that rewritability is preserved.

Ontology-based Data Access, First-order Rewritability, Description Logics

https://publik.tuwien.ac.at/files/publik_275138.pdf