Games for query inseparability of description logic knowledge bases
Games for query inseparability of description logic knowledge bases
复制标题
描述逻辑知识库查询不可分性的博弈
DOI:
10.1016/j.artint.2016.01.010
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发表时间:
2016
影响因子:
14.4
通讯作者:
Botoeva E
中科院分区:
文献类型:
--
作者:
Botoeva E
We consider conjunctive query inseparability of description logic knowledge bases with respect to a given signature—a fundamental problem in knowledge base versioning, module extraction, forgetting and knowledge exchange. We give a uniform game-theoretic characterisation of knowledge base conjunctive query inseparability and develop worst-case optimal decision algorithms for fragments of Horn-ALCHI, including the description logics underpinning OWL 2 QL and OWL 2 EL. We also determine the data and combined complexity of deciding query inseparability. While query inseparability for all of these logics is P-complete for data complexity, the combined complexity ranges from P-to ExpTime-to 2 ExpTime-completeness. We use these results to resolve two major open problems for OWL 2 QL by showing that TBox query inseparability and the membership problem for universal conjunctive query solutions in knowledge exchange are both ExpTime-complete for combined complexity. Finally, we introduce a more flexible notion of inseparability which compares answers to conjunctive queries in a given signature over a given set of individuals. In this case, checking query inseparability becomes NP-complete for data complexity, but the ExpTime-and 2 ExpTime-completeness combined complexity results are preserved.
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DOI:
--
发表时间:
2014
期刊:
Description Logics
影响因子:
--
作者:
P. Koopmann;R. Schmidt
通讯作者:
R. Schmidt
影响因子:
5
作者:
Grau, Bernardo Cuenca;Horrocks, Ian;Sattler, Ulrike
通讯作者:
Sattler, Ulrike
DOI:
10.1007/978-3-319-10587-1_5
发表时间:
2014
期刊:
SIGART Bull.
影响因子:
--
作者:
R. Kontchakov;M. Zakharyaschev
通讯作者:
M. Zakharyaschev
影响因子:
5
作者:
B. C. Grau;B. Motik
通讯作者:
B. Motik
DOI:
10.1613/jair.3552
发表时间:
2012-05
期刊:
J. Artif. Intell. Res.
影响因子:
--
作者:
B. Konev;Michel Ludwig;Dirk Walther;F. Wolter
通讯作者:
B. Konev;Michel Ludwig;Dirk Walther;F. Wolter