HELLINGS, Jelle

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Full Name
HELLINGS, Jelle
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jelle.hellings@uhasselt.be
 
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Publications

Results 1-17 of 17 (Search time: 0.009 seconds).

Issue DateTitleContributor(s)TypeCat.
12023Expressive Completeness of Two-Variable First-Order Logic with Counting for First-Order Logic Queries on Rooted Unranked TreesHELLINGS, Jelle; GYSSENS, Marc; VAN DEN BUSSCHE, Jan; Van Gucht, DirkProceedings PaperC1
22022The power of Tarski's relation algebra on treesHELLINGS, Jelle; Van Gucht, Dirk; GYSSENS, Marc; WU, YuqingJournal ContributionA1
32022Optimizing Multiset Relational Algebra Queries Using Weak-Equivalent Rewrite RulesHELLINGS, Jelle; Wu , Yuqing; Van Gucht, Dirk; GYSSENS, Marc; Varzinczak, I.Proceedings PaperC1
42021From Relation Algebra to Semi-join Algebra: An Approach to Graph Query OptimizationHELLINGS, Jelle; Pilachowski, CL; Van Gucht, D; GYSSENS, Marc; Wu, YQJournal ContributionA1
52020Comparing the expressiveness of downward fragments of the relation algebra with transitive closure on treesHELLINGS, Jelle; GYSSENS, Marc; Wu, Yuqing; Van Gucht, Dirk; VAN DEN BUSSCHE, Jan; VANSUMMEREN, Stijn; Fletcher, George H. L.Journal ContributionA1
62019Calculi for symmetric queriesGYSSENS, Marc; HELLINGS, Jelle; Paredaens, Jan; Van Gucht, Dirk; Wijsen, Jef; Wu, YuqingJournal ContributionA1
72019First-order definable counting-only queriesHELLINGS, Jelle; GYSSENS, Marc; Van Gucht, Dirk; Wu, YuqingJournal ContributionA1
82018On Tarski’s Relation Algebra: Querying trees and chains, and the semi-join algebraHELLINGS, JelleTheses and DissertationsT1
92018The Power of Tarski’s Relation Algebra on TreesHELLINGS, Jelle; Wu, Yuqing; GYSSENS, Marc; Van Gucht, DirkProceedings PaperC1
102018First-order definable counting-only queriesHELLINGS, Jelle; GYSSENS, Marc; Van Gucht, Dirk; Wu, YuqingProceedings PaperC1
112017From Relation Algebra to Semi-Join Algebra: An Approach for Graph Query OptimizationHELLINGS, Jelle; Pilachowski, Catherine L.; Van Gucht, Dirk; GYSSENS, Marc; Wu, YuqingProceedings PaperC1
122016Implication and axiomatization of functional and constant constraintsHELLINGS, Jelle; GYSSENS, Marc; Paredaens, Jan; Wu, YuqingJournal ContributionA1
132015Relative expressive power of downward fragments of navigational query languages on trees and chainsHELLINGS, Jelle; GYSSENS, Marc; Wu, Yuqing; Van Gucht, Dirk; VAN DEN BUSSCHE, Jan; VANSUMMEREN, Stijn; Fletcher, George H. L.Proceedings PaperC1
142014Conjunctive Context-Free Path QueriesHELLINGS, JelleProceedings PaperC1
152014Implication and Axiomatization of Functional Constraints on Patterns with an Application to the RDF Data ModelHELLINGS, Jelle; GYSSENS, Marc; Paredaens, Jan; Wu, YuqingProceedings PaperC1
162013Walk logic as a framework for path query languages on graph databasesHELLINGS, Jelle; KUIJPERS, Bart; VAN DEN BUSSCHE, Jan; ZHANG, XiaowangProceedings PaperC1
172012Efficient External-Memory Bisimulation on DAGsHELLINGS, Jelle; Fletcher, George H. L.; Haverkort, HermanProceedings PaperC1