Parallelisable Existential Rules: a Story of Pieces - Inria - Institut national de recherche en sciences et technologies du numérique Access content directly
Conference Papers Year : 2021

Parallelisable Existential Rules: a Story of Pieces

Michaël Thomazo

Abstract

In this paper, we consider existential rules, an expressive formalism well suited to the representation of ontological knowledge and data-to-ontology mappings in the context of ontology-based data integration. The chase is a fundamental tool to do reasoning with existential rules as it computes all the facts entailed by the rules from a database instance. We introduce parallelisable sets of existential rules, for which the chase can be computed in a single breadth-first step from any instance. The question we investigate is the characterization of such rule sets. We show that parallelisable rule sets are exactly those rule sets both bounded for the chase and belonging to a novel class of rules, called pieceful. The pieceful class includes in particular frontier-guarded existential rules and (plain) datalog. We also give another characterization of parallelisable rule sets in terms of rule composition based on rewriting.
Fichier principal
Vignette du fichier
krcr-main.pdf (307.74 Ko) Télécharger le fichier
Origin Files produced by the author(s)

Dates and versions

hal-03405745 , version 1 (27-10-2021)

Identifiers

Cite

Maxime Buron, Marie-Laure Mugnier, Michaël Thomazo. Parallelisable Existential Rules: a Story of Pieces. KR 2021 - 18th International Conference on Principles of Knowledge Representation and Reasoning, Nov 2021, Virtual, Vietnam. pp.163-173, ⟨10.24963/kr.2021/16⟩. ⟨hal-03405745⟩
85 View
69 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More