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Inference from Visible Information and Background Knowledge

Published: 21 June 2021 Publication History

Abstract

We provide a wide-ranging study of the scenario where a subset of the relations in a relational vocabulary is visible to a user—that is, their complete contents are known—while the remaining relations are invisible. We also have a background theory—invariants given by logical sentences—that may relate the visible relations to invisible ones, and also may constrain both the visible and invisible relations in isolation. We want to determine whether some other information, given as a positive existential formula, can be inferred using only the visible information and the background theory. This formula whose inference we are concerned with is denoted as the query. We consider whether positive information about the query can be inferred, and also whether negative information—the sentence does not hold—can be inferred. We further consider both the instance-level version of the problem, where both the query and the visible instance are given, and the schema-level version, where we want to know whether truth or falsity of the query can be inferred in some instance of the schema.

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  • (2023)On Monotonic Determinacy and Rewritability for Recursive Queries and ViewsACM Transactions on Computational Logic10.1145/357283624:2(1-62)Online publication date: 17-Mar-2023

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Published In

cover image ACM Transactions on Computational Logic
ACM Transactions on Computational Logic  Volume 22, Issue 2
April 2021
252 pages
ISSN:1529-3785
EISSN:1557-945X
DOI:10.1145/3465459
  • Editor:
  • Orna Kupferman
Issue’s Table of Contents
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Association for Computing Machinery

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Publication History

Published: 21 June 2021
Accepted: 01 February 2021
Revised: 01 November 2020
Received: 01 October 2019
Published in TOCL Volume 22, Issue 2

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Author Tags

  1. Query answering
  2. GNF

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  • Research-article
  • Refereed

Funding Sources

  • Engineering and Physical Sciences Research Council
  • CPER Nord-Pas de Calais/FEDER DATA
  • Advanced data science and technologies
  • ANR Aggreg project

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  • (2023)On Monotonic Determinacy and Rewritability for Recursive Queries and ViewsACM Transactions on Computational Logic10.1145/357283624:2(1-62)Online publication date: 17-Mar-2023

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