Optimal ABox Repair w.r.t. Static 𝓔𝓛 TBoxes: from Quantified ABoxes back to ABoxes (Extended Version)

Publikation: Beitrag zu Konferenzen › Paper › Beigetragen › Begutachtung

Abstract

Errors in Description Logic (DL) ontologies are often detected when a reasoner computes unwanted consequences. The question is then how to repair the ontology such that the unwanted consequences no longer follow, but as many of the other consequences as possible are preserved. The problem of computing such optimal repairs was addressed in our previous work in the setting where the data (expressed by an ABox) may contain errors, but the schema (expressed by an 𝓔𝓛 TBox) is assumed to be correct. Actually, we consider a generalization of ABoxes called quantified ABoxes (qABoxes) both as input for and as result of the repair process. Using qABoxes for repair allows us to retain more information, but the disadvantage is that standard DL systems do not accept qABoxes as input. This raises the question, investigated in the present paper, whether and how one can obtain optimal repairs if one restricts the output of the repair process to being ABoxes. In general, such optimal ABox repairs need not exist. Our main contribution is that we show how to decide the existence of optimal ABox repairs in exponential time, and how to compute all such repairs in case they exist.

Details

OriginalspracheEnglisch
PublikationsstatusVeröffentlicht - 29 Mai 2022
Peer-Review-StatusJa

Konferenz

TitelExtended Semantic Web Conference
KurztitelESWC 2022
Veranstaltungsnummer19
Dauer29 Mai - 2 Juni 2022
BekanntheitsgradInternationale Veranstaltung
Ort
StadtHersonissos
LandGriechenland

Externe IDs

unpaywall 10.25368/2022.65
ORCID /0000-0002-4049-221X/work/142247930
ORCID /0000-0002-9047-7624/work/142251254

Schlagworte