159 citations
- Hasselt UniversityBE2 papers
- Indiana University BloomingtonUS2 papers
- University of Alabama at BirminghamUS2 papers
- Humboldt-Universität zu BerlinDE1 paper
- Instituto Tecnológico de Buenos Aires (ITBA)AR1 paper
- Massachusetts Institute of TechnologyUS1 paper
- Universidad de Buenos AiresAR1 paper
- University of AntwerpBE1 paper
- University of WarsawPL1 paper
- Utrecht UniversityNL1 paper
- Vrije Universiteit BrusselBE1 paper
13 papers
On the Conditional Independence Implication Problem: A Lattice-Theoretic Approach
Mathias Niepert, Dirk Van Gucht, Marc Gyssens
A lattice-theoretic framework is introduced that permits the study of the conditional independence (CI) implication problem relative to the class of discrete probability measures.…
Spatial Aggregation: Data Model and Implementation
Leticia Gomez, Sofie Haesevoets, Bart Kuijpers +1
Data aggregation in Geographic Information Systems (GIS) is only marginally present in commercial systems nowadays, mostly through ad-hoc solutions. In this paper, we first present…
Dissipative collapse of the adiabatic piston
R. Brito, M. J. Renne, C. Van den Broeck
An adiabatic piston, separating two granular gases prepared in the same macroscopic state, is found to eventually collapse to one of the sides. This new instability is explained by…
The semijoin algebra and the guarded fragment
Dirk Leinders, Jerzy Tyszkiewicz, Jan Van den Bussche
The semijoin algebra is the variant of the relational algebra obtained by replacing the join operator by the semijoin operator. We discuss some interesting connections between the…
Well-Definedness and Semantic Type-Checking in the Nested Relational Calculus and XQuery
Jan Van den Bussche, Dirk Van Gucht, Stijn Vansummeren
Two natural decision problems regarding the XML query language XQuery are well-definedness and semantic type-checking. We study these problems in the setting of a relational fragme…
Deformation theory of abelian categories
Wenty T. Lowen, Michel Van den Bergh
In this paper we develop the basic infinitesimal deformation theory of abelian categories. This theory yields a natural generalization of the well-known deformation theory of algeb…