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- W3205833151 abstract "In this paper, we consider existential rules, an expressive formalism well adapted to the representation of ontological knowledge, as well as 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." @default.
- W3205833151 created "2021-10-25" @default.
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- W3205833151 date "2021-09-01" @default.
- W3205833151 modified "2023-10-15" @default.
- W3205833151 title "Parallelisable Existential Rules: a Story of Pieces" @default.
- W3205833151 doi "https://doi.org/10.24963/kr.2021/16" @default.
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