Containment in Monadic Disjunctive Datalog, MMSNP, and Expressive Description Logics

Containment in Monadic Disjunctive Datalog, MMSNP, and Expressive Description Logics
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单子析取数据记录、MMSNP 和表达描述逻辑中的遏制

DOI:
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发表时间:
2016
期刊:
International Conference on Principles of Knowledge Representation and Reasoning
影响因子:
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通讯作者:
C. Lutz
C. Lutz
中科院分区:
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文献类型:
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作者:
P. Bourhis;C. Lutz

文献摘要

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我们研究查询包含在三个密切相关的形式主义:一元析取数据集(MDDLog),MMSNP(一个逻辑概括的约束满足问题),本体介导的查询(OMQs)的基础上表达描述逻辑和工会的合取查询。由于Feder和Vardi的结果,MMSNP中的遏制被认为是可判定的,但其确切的复杂性仍然是开放的。我们证明了2NExpTime-完全性,并将这一结果推广到一元析取数据库和OMQs。
We study query containment in three closely related formalisms: monadic disjunctive Datalog (MDDLog), MMSNP (a logical generalization of constraint satisfaction problems), and ontology-mediated queries (OMQs) based on expressive description logics and unions of conjunctive queries. Containment in MMSNP was known to be decidable due to a result by Feder and Vardi, but its exact complexity has remained open. We prove 2NExpTime-completeness and extend this result to monadic disjunctive Datalog and to OMQs.