ML Anthology

Schema.org as a Description Logic

André Hernich, Carsten Lutz, Ana Ozaki, Frank Wolter
IJCAI 2015 pp. 3048-3054
/ijcai/2015/hernich2015ijcai-schema/

Abstract

Schema.org is an initiative by the major search engine providers Bing, Google, Yahoo, and Yandex that provides a collection of ontologies which webmasters can use to mark up their pages. Schema.org comes without a formal language definition and without a clear semantics. We formalize the language of Schema.org as a Description Logic (DL) and study the complexity of querying data using (unions of) conjunctive queries in the presence of ontologies formulated in this DL (from several perspectives). While querying is intractable in general, we identify various cases in which it is tractable and where queries are even rewritable into FO queries or datalog programs.

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Cite

Text

Hernich et al. "Schema.org as a Description Logic." International Joint Conference on Artificial Intelligence, 2015.

Markdown

[Hernich et al. "Schema.org as a Description Logic." International Joint Conference on Artificial Intelligence, 2015.](https://mlanthology.org/ijcai/2015/hernich2015ijcai-schema/)

BibTeX

@inproceedings{hernich2015ijcai-schema,
  title     = {{Schema.org as a Description Logic}},
  author    = {Hernich, André and Lutz, Carsten and Ozaki, Ana and Wolter, Frank},
  booktitle = {International Joint Conference on Artificial Intelligence},
  year      = {2015},
  pages     = {3048-3054},
  url       = {https://mlanthology.org/ijcai/2015/hernich2015ijcai-schema/}
}