@inproceedings{ferr-etal-2025ISWC,
author = {Nicolas Ferranti and Dayane Guimaraes and Jairo Souza and Axel Polleres},
title = {Formalizing Repairs for Wikidata Constraint Violations: A Taxonomy and Empirical Analysis},
abstract = {Collaboratively maintained knowledge graphs like Wikidata
rely on property constraints to detect data inconsistencies. This paper sys-
tematically formalizes potential repairs for Wikidata constraint violations,
presenting a comprehensive taxonomy of repair strategies encompassing
both instance-level (A-box) and terminological-level (T-box) changes.
T-box repairs, which alter constraint definitions or Wikidata’s class hier-
archy, can simultaneously address multiple violations and, to the best of
our knowledge, have not been investigated in detail before. We observe
repairs over time and evaluate how specific patterns within our taxonomy
are applied in practice. Our analysis of historical data reveals insights
into the prevalence of repair patterns in Wikidata’s collaborative environ-
ment. The results indicate that T-box repairs are particularly relevant
for certain constraint types and the overall consolidation of Wikidata,
where modifying constraint definitions can reduce the number of recurring
violations.},
month = nov,
day = {2--6},
year = 2025,
booktitle = {Proceedings of the 24th International Semantic Web Conference (ISWC 2025)},
address = {Nara, Japan},
series = LNCS,
note = {to appear.},
publisher = {Springer},
url = {http://polleres.net/publications/ferr-etal-2025ISWC.pdf}
}

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