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06/09/2023
Query Rewriting with Disjunctive Existential Rules and Mappings
We consider the issue of answering unions of conjunctive queries (UCQs) ...
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06/07/2022
Normalisations of Existential Rules: Not so Innocuous!
Existential rules are an expressive knowledge representation language ma...
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07/13/2021
Parallelisable Existential Rules: a Story of Pieces
In this paper, we consider existential rules, an expressive formalism we...
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06/15/2020
Oblivious and Semi-Oblivious Boundedness for Existential Rules
We study the notion of boundedness in the context of positive existentia...
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04/21/2020
Characterizing Boundedness in Chase Variants
Existential rules are a positive fragment of first-order logic that gene...
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10/22/2018
On the k-Boundedness for Existential Rules
The chase is a fundamental tool for existential rules. Several chase var...
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10/04/2018
A Single Approach to Decide Chase Termination on Linear Existential Rules
Existential rules, long known as tuple-generating dependencies in databa...
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02/18/2016
A General Modifier-based Framework for Inconsistency-Tolerant Query Answering
We propose a general framework for inconsistency-tolerant query answerin...
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04/28/2015
Combining Existential Rules and Transitivity: Next Steps
We consider existential rules (aka Datalog+) as a formalism for specifyi...
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12/15/2014
Worst-case Optimal Query Answering for Greedy Sets of Existential Rules and Their Subclasses
The need for an ontological layer on top of data, associated with advanc...
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07/25/2014
Extending Acyclicity Notions for Existential Rules (long version)
Existential rules have been proposed for representing ontological knowle...
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05/05/2014