IJCAI 2020poster0 citations
A Journey into Ontology Approximation: From Non-Horn to Horn
Anneke Haga, Carsten Lutz, Johannes Marti, Frank Wolter
Abstract
We study complete approximations of an ontology formulated in a non-Horn description logic (DL) such as ALC in a Horn DL such as EL. We provide concrete approximation schemes that are necessarily infinite and observe that in the ELU-to-EL case finite approximations tend to exist in practice and are guaranteed to exist when the source ontology is acyclic. In contrast, neither of this is the case for ELU_bot-to-EL_bot and for ALC-to-EL_bot approximations. We also define a notion of approximation tailored towards ontology-mediated querying, connect it to subsumption-based approximations, and identify a case where finite approximations are guaranteed to exist.
Knowledge Representation and Reasoning: Description Logics and Ontologies
BibTeX
@inproceedings{ijcai2020p253,
title = {A Journey into Ontology Approximation: From Non-Horn to Horn},
author = {Haga, Anneke and Lutz, Carsten and Marti, Johannes and Wolter, Frank},
booktitle = {Proceedings of the Twenty-Ninth International Joint Conference on
Artificial Intelligence, {IJCAI-20}},
publisher = {International Joint Conferences on Artificial Intelligence Organization},
editor = {Christian Bessiere},
pages = {1827--1833},
year = {2020},
month = {7},
note = {Main track},
doi = {10.24963/ijcai.2020/253},
url = {https://doi.org/10.24963/ijcai.2020/253},
}