Optimal Fixed-Premise Repairs of ℰℒ TBoxes
Research output: Contribution to book/conference proceedings/anthology/report › Conference contribution › Contributed › peer-review
Contributors
Abstract
Reasoners can be used to derive implicit consequences from an ontology. Sometimes unwanted consequences are revealed, indicating errors or privacy-sensitive information, and the ontology needs to be appropriately repaired. The classical approach is to remove just enough axioms such that the unwanted consequences vanish. However, this is often too rough since mere axiom deletion also erases many other consequences that might actually be desired. The goal should not be to remove a minimal number of axioms but to modify the ontology such that only a minimal number of consequences is removed, including the unwanted ones. Specifically, a repair should rather be logically entailed by the input ontology, instead of being a subset. To this end, we introduce a framework for computing fixed-premise repairs of 𝓔𝓛 TBoxes. In the first variant the conclusions must be generalizations of those in the input TBox, while in the second variant no such restriction is imposed. In both variants, every repair is entailed by an optimal one and, up to equivalence, the set of all optimal repairs can be computed in exponential time. A prototypical implementation is provided. In addition, we show new complexity results regarding gentle repairs.
Details
Original language | English |
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Title of host publication | Proceedings of the 45th German Conference on Artificial Intelligence (KI 2022), Virtual in Trier, Germany, September 19-23, 2022 |
Editors | Ralph Bergmann, Lukas Malburg, Stephanie C. Rodermund, Ingo J. Timm |
Publisher | Springer, Berlin [u. a.] |
Pages | 115-130 |
Number of pages | 16 |
Publication status | Published - 19 Sept 2022 |
Peer-reviewed | Yes |
Publication series
Series | Lecture Notes in Computer Science, Volume 13404 |
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ISSN | 0302-9743 |
Conference
Title | 45th German Conference on Artificial Intelligence |
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Abbreviated title | KI 2022 |
Conference number | 45 |
Duration | 19 - 23 September 2022 |
Website | |
Degree of recognition | International event |
Location | online |
City | Trier |
Country | Germany |
External IDs
Scopus | 85138803632 |
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Mendeley | 054bcfe7-f83b-3d85-9fb2-a4c55ab75311 |
ORCID | /0000-0003-0219-0330/work/153109417 |
Keywords
ASJC Scopus subject areas
Keywords
- Description logic, Fixed-premise repair, Generalized-conclusion repair, Optimal repair, TBox repair