Combining decidability paradigms for existential rules

Author:

GOTTLOB GEORG,MANNA MARCO,PIERIS ANDREAS

Abstract

AbstractExistential rules are Datalog rules extended with existential quantifiers in rule-heads. Three fundamental restriction paradigms that have been studied for ensuring decidability of query answering under existential rules are weak-acyclicity, guardedness and stickiness. Towards the identification of even more expressive decidable languages, several attempts have been conducted to consolidate weak-acyclicity with the other two paradigms. However, it is not clear how guardedness and stickiness can be merged; this is the subject of this paper. A powerful and flexible condition, called tameness, is proposed, which allows us to consolidate in an elegant and uniform way guardedness with stickiness.

Publisher

Cambridge University Press (CUP)

Subject

Artificial Intelligence,Computational Theory and Mathematics,Hardware and Architecture,Theoretical Computer Science,Software

Cited by 8 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Loop restricted existential rules and first-order rewritability for query answering;Journal of Logic and Computation;2021-12-23

2. Stable Model Semantics for Guarded Existential Rules and Description Logics: Decidability and Complexity;Journal of the ACM;2021-10-31

3. Fast Query Answering over Existential Rules;ACM Transactions on Computational Logic;2019-04-30

4. Explanation-Friendly Query Answering Under Uncertainty;Reasoning Web. Explainable Artificial Intelligence;2019

5. Finite model reasoning over existential rules;Theory and Practice of Logic Programming;2017-08-24

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