Bonjour! I am Pierre Lafourcade, currently a Ph.D. student at LaBRI, Université de Bordeaux under the supervision of Meghyn Bienvenu and Diego Figueira. I am part of the RATIO team, in the Formal Methods and Models department.
Interests
- Database theory
- Knowledge Representation
- Complexity
Education
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Masters degree (MPRI) , 2023ENS Cachan
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Computer science agregation , 2022
Recent Publications
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Meghyn Bienvenu , Diego Figueira , Pierre Lafourcade
How Hard is it to Decide if a Fact is Relevant to a Query?
International Conference on Principles of Knowledge Representation and Reasoning (KR) 2026 (accepted)
We consider the following fundamental problem: given a database D, Boolean conjunctive query (CQ) q, and fact f ∈ D, decide whether f is relevant to q w.r.t. D, i.e., does f belong to a minimal subset S ⊆ D such that S |= q. Despite being of central …
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Meghyn Bienvenu , Diego Figueira , Pierre Lafourcade
Responsibility Measures for Conjunctive Queries with Negation
International Conference on Database Theory (ICDT) 2026
We contribute to the recent line of work on responsibility measures that quantify the contributions of database facts to obtaining a query result. In contrast to existing work which has almost exclusively focused on monotone queries, here we explore …
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