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Monotone rewritability and the analysis of queries, views, and rules

Abstract:
We study the interaction of views, queries, and background knowledge in the form of existential rules. The motivating questions concern monotonic determinacy of a query using views w.r.t. rules, which refers to the ability to recover the query answer from the views via a monotone function. We study the decidability of monotonic determinacy, and compare with variations that require the “recovery function” to be in a well-known monotone query language, such as conjunctive queries or Datalog. Surprisingly, we find that even in the presence of basic existential rules, the borderline between well-behaved and badly-behaved answerability differs radically from the unconstrained case. In order to understand this boundary, we require new results concerning entailment problems involving views and rules.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.24963/kr.2024/11

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Computer Science
Oxford college:
University College
Role:
Author
ORCID:
0000-0003-2964-0880
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Computer Science
Role:
Author


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Funder identifier:
https://ror.org/0439y7842
Grant:
EP/T022124/1


Publisher:
IJCAI Organization
Host title:
Proceedings of the 21st International Conference on Principles of Knowledge Representation and Reasoning
Pages:
117–127
Publication date:
2024-10-26
Acceptance date:
2024-07-24
Event title:
21st International Conference on Principles of Knowledge Representation and Reasoning (KR 2024)
Event location:
Hanoi, Vietnam
Event website:
https://kr.org/KR2024
Event start date:
2024-11-02
Event end date:
2024-11-08
DOI:
ISSN:
2334-1033
ISBN:
978-1-956792-05-8


Language:
English
Keywords:
Pubs id:
2017746
Local pid:
pubs:2017746
Deposit date:
2024-07-22

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