Jef Wijsen

93 papers A* 9A 8B 1C 10Journal 38Unranked 21
YearRankTypeTitle / Venue / Authors
2026 A conf
Computing Consistent Least Upper Bounds in Aggregate Logic.
ICDT
Aziz Amezian El Khalfioui, Jef Wijsen
2025 J jnl
Rewriting Consistent Answers On Annotated Data.
Proc. ACM Manag. Data
Phokion G. Kolaitis, Nina Pardal, Jonni Virtema, Jef Wijsen
2024 J jnl
Computing Range Consistent Answers to Aggregation Queries via Rewriting.
CoRR
Aziz Amezian El Khalfioui, Jef Wijsen
2024 J jnl
Computing Range Consistent Answers to Aggregation Queries via Rewriting.
Proc. ACM Manag. Data
Aziz Amezian El Khalfioui, Jef Wijsen
2024 J jnl
Consistent Query Answering for Primary Keys on Rooted Tree Queries.
Proc. ACM Manag. Data
Paraschos Koutris, Xiating Ouyang, Jef Wijsen
2023 A conf
Consistent Query Answering for Primary Keys and Conjunctive Queries with Counting.
ICDT
Aziz Amezian El Khalfioui, Jef Wijsen
2023 J jnl
Consistent Query Answering for Primary Keys on Path Queries.
CoRR
Paraschos Koutris, Xiating Ouyang, Jef Wijsen
2023 J jnl
Consistent Query Answering for Primary Keys on Rooted Tree Queries.
CoRR
Paraschos Koutris, Xiating Ouyang, Jef Wijsen
2023 J jnl
LinCQA: Faster Consistent Query Answering with Linear Time Guarantees.
Proc. ACM Manag. Data
Zhiwei Fan, Paraschos Koutris, Xiating Ouyang, Jef Wijsen
2022 A* conf
A Dichotomy in Consistent Query Answering for Primary Keys and Unary Foreign Keys.
PODS
Miika Hannula, Jef Wijsen
2022 J jnl
A Dichotomy in Consistent Query Answering for Primary Keys and Unary Foreign Keys.
CoRR
Miika Hannula, Jef Wijsen
2022 — conf
Computing H-Partitions in ASP and Datalog.
ICLP Workshops
Chloé Capon, Nicolas Lecomte, Jef Wijsen
2022 J jnl
Computing H-Partitions in ASP and Datalog.
CoRR
Chloé Capon, Nicolas Lecomte, Jef Wijsen
2022 J jnl
Consistent Query Answering for Primary Keys and Conjunctive Queries with Counting.
CoRR
Aziz Amezian El Khalfioui, Jef Wijsen
2022 J jnl
LinCQA: Faster Consistent Query Answering with Linear Time Guarantees.
CoRR
Zhiwei Fan, Paraschos Koutris, Xiating Ouyang, Jef Wijsen
2021 J jnl
Consistent Query Answering for Primary Keys in Datalog.
Theory Comput. Syst.
Paraschos Koutris, Jef Wijsen
2021 A* conf
Consistent Query Answering for Primary Keys on Path Queries.
PODS
Paraschos Koutris, Xiating Ouyang, Jef Wijsen
2021 J jnl
Counting subset repairs with functional dependencies.
J. Comput. Syst. Sci.
Ester Livshits, Benny Kimelfeld, Jef Wijsen
2021 C conf
Generalized Weighted Repairs.
FQAS
Horacio Tellez Perez, Jef Wijsen
2020 A* conf
First-Order Rewritability in Consistent Query Answering with Respect to Multiple Keys.
PODS
Paraschos Koutris, Jef Wijsen
2020 — conf
Logic-Based Ranking of Assertions in Inconsistent ABoxes.
Description Logics
Horacio Tellez Perez, Jef Wijsen
2020 A conf
Optimization of Answer Set Programs for Consistent Query Answering by Means of First-Order Rewriting.
CIKM
Aziz Amezian El Khalfioui, Jonathan Joertz, Dorian Labeeuw, Gaëtan Staquet, Jef Wijsen
2019 J jnl
Calculi for symmetric queries.
J. Comput. Syst. Sci.
Marc Gyssens, Jelle Hellings, Jan Paredaens, Dirk Van Gucht, Jef Wijsen, Yuqing Wu
2019 — conf
Connecting Databases and Ontologies: A Data Quality Perspective.
Description Logics
Horacio Tellez Perez, Jef Wijsen
2019 A conf
Consistent Query Answering for Primary Keys in Logspace.
ICDT
Paraschos Koutris, Jef Wijsen
2019 J jnl
Corrigendum to "Counting Database Repairs that Satisfy Conjunctive Queries with Self-Joins".
CoRR
Jef Wijsen
2019 J jnl
Foundations of Query Answering on Inconsistent Databases.
SIGMOD Rec.
Jef Wijsen
2019 J jnl
Special issue on Temporal Representation and Reasoning (TIME 2017).
Theor. Comput. Sci.
Sven Schewe, Thomas Schneider, Jef Wijsen
2018 A* conf
Consistent Query Answering for Primary Keys and Conjunctive Queries with Negated Atoms.
PODS
Paraschos Koutris, Jef Wijsen
2018 J jnl
Consistent Query Answering for Primary Keys in Logspace.
CoRR
Paraschos Koutris, Jef Wijsen
2018 — ch.
Temporal Dependencies.
Encyclopedia of Database Systems (2nd ed.)
Jef Wijsen
2018 — ch.
Temporal Integrity Constraints.
Encyclopedia of Database Systems (2nd ed.)
Jef Wijsen
2017 C ed.
24th International Symposium on Temporal Representation and Reasoning, TIME 2017, Mons, Belgium, October 16-18, 2017
TIME
Sven Schewe, Thomas Schneider, Jef Wijsen
2017 J jnl
Consistent Query Answering for Self-Join-Free Conjunctive Queries Under Primary Key Constraints.
ACM Trans. Database Syst.
Paraschos Koutris, Jef Wijsen
2017 J jnl
First-order under-approximations of consistent query answers.
Int. J. Approx. Reason.
Floris Geerts, Fabian Pijcke, Jef Wijsen
2016 C conf
Consistent Query Answering for Atemporal Constraints over Temporal Databases.
TIME
Jan Chomicki, Jef Wijsen
2016 J jnl
Consistent Query Answering for Primary Keys.
SIGMOD Rec.
Paraschos Koutris, Jef Wijsen
2015 J jnl
A Trichotomy in the Data Complexity of Certain Query Answering for Conjunctive Queries.
CoRR
Paraschos Koutris, Jef Wijsen
2015 — conf
First-Order Under-Approximations of Consistent Query Answers.
SUM
Floris Geerts, Fabian Pijcke, Jef Wijsen
2015 A* conf
The Data Complexity of Consistent Query Answering for Self-Join-Free Conjunctive Queries Under Primary Key Constraints.
PODS
Paraschos Koutris, Jef Wijsen
2014 — conf
A Survey of the Data Complexity of Consistent Query Answering under Key Constraints.
FoIKS
Jef Wijsen
2014 J jnl
Certain Query Answering in Partially Consistent Databases.
Proc. VLDB Endow.
Sergio Greco, Fabian Pijcke, Jef Wijsen
2014 A conf
Counting Database Repairs that Satisfy Conjunctive Queries with Self-Joins.
ICDT
Dany Maslowski, Jef Wijsen
2013 J jnl
A dichotomy in the complexity of counting database repairs.
J. Comput. Syst. Sci.
Dany Maslowski, Jef Wijsen
2013 J jnl
An Approach towards the Study of Symmetric Queries.
Proc. VLDB Endow.
Marc Gyssens, Jan Paredaens, Dirk Van Gucht, Jef Wijsen, Yuqing Wu
2013 J jnl
Charting the Tractability Frontier of Certain Conjunctive Query Answering
CoRR
Jef Wijsen
2013 A* conf
Charting the tractability frontier of certain conjunctive query answering.
PODS
Jef Wijsen
2013 — ed.
Scalable Uncertainty Management - 7th International Conference, SUM 2013, Washington, DC, USA, September 16-18, 2013. Proceedings
SUM
Weiru Liu, V. S. Subrahmanian, Jef Wijsen
2012 J jnl
An aperiodicity problem for multiwords.
RAIRO Theor. Informatics Appl.
Véronique Bruyère, Olivier Carton, Alexandre Decan, Olivier Gauwin, Jef Wijsen
2012 — conf
Certain Conjunctive Query Answering in SQL.
SUM
Alexandre Decan, Fabian Pijcke, Jef Wijsen
2012 J jnl
Certain conjunctive query answering in first-order logic.
ACM Trans. Database Syst.
Jef Wijsen
2012 J jnl
Determining the Currency of Data.
ACM Trans. Database Syst.
Wenfei Fan, Floris Geerts, Jef Wijsen
2011 A* conf
Determining the currency of data.
PODS
Wenfei Fan, Floris Geerts, Jef Wijsen
2011 — conf
On Armstrong-compliant logical query languages.
LID
Marie Agier, Christine Froidevaux, Jean-Marc Petit, Yoan Renaud, Jef Wijsen
2011 — conf
On counting database repairs.
LID
Dany Maslowski, Jef Wijsen
2011 C conf
Towards a Foundation of Data Currency.
TIME
Jef Wijsen
2011 C conf
Uncertainty That Counts.
FQAS
Dany Maslowski, Jef Wijsen
2010 J jnl
A remark on the complexity of consistent conjunctive query answering under primary key violations.
Inf. Process. Lett.
Jef Wijsen
2010 A* conf
On the first-order expressibility of computing certain answers to conjunctive queries over uncertain databases.
PODS
Jef Wijsen
2010 C ed.
TIME 2010 - 17th International Symposium on Temporal Representation and Reasoning, Paris, France, 6-8 September 2010
TIME
Nicolas Markey, Jef Wijsen
2009 A conf
Consistent query answering under primary keys: a characterization of tractable queries.
ICDT
Jef Wijsen
2009 C conf
On First-Order Query Rewriting for Incomplete Database Histories.
TIME
Véronique Bruyère, Alexandre Decan, Jef Wijsen
2009 J jnl
On the consistent rewriting of conjunctive queries under primary key constraints.
Inf. Syst.
Jef Wijsen
2009 — ch.
Temporal Dependencies.
Encyclopedia of Database Systems
Jef Wijsen
2009 — ch.
Temporal Integrity Constraints.
Encyclopedia of Database Systems
Jef Wijsen
2008 — conf
08421 Working Group: Imprecision, Diversity and Uncertainty: Disentangling Threads in Uncertainty Management.
Uncertainty Management in Information Systems
Myra Spiliopoulou, Maurice van Keulen, Hans-Joachim Lenz, Jef Wijsen, Matthias Renz, Rudolf Kruse, Mirco Stern
2007 — conf
Consistent Joins Under Primary Key Constraints.
MUD
Jef Wijsen
2007 — conf
On the Consistent Rewriting of Conjunctive Queries Under Primary Key Constraints.
DBPL
Jef Wijsen
2006 — ed.
Current Trends in Database Technology - EDBT 2006, EDBT 2006 Workshops PhD, DataX, IIDB, IIHA, ICSNW, QLQP, PIM, PaRMA, and Reactivity on the Web, Munich, Germany, March 26-31, 2006, Revised Selected Papers
EDBT Workshops
Torsten Grust, Hagen Höpfner, Arantza Illarramendi, Stefan Jablonski, Marco Mesiti, Sascha Müller, Paula-Lavinia Patranjan, Kai-Uwe Sattler, Myra Spiliopoulou, Jef Wijsen
2006 — conf
Project-Join-Repair: An Approach to Consistent Query Answering Under Functional Dependencies.
BDA
Jef Wijsen
2006 C conf
Project-Join-Repair: An Approach to Consistent Query Answering Under Functional Dependencies.
FQAS
Jef Wijsen
2005 J jnl
Database repairing using updates.
ACM Trans. Database Syst.
Jef Wijsen
2005 — conf
On Condensing Database Repairs Obtained by Tuple Deletions.
DEXA Workshops
Jef Wijsen
2004 C conf
Making More Out of an Inconsistent Database.
ADBIS
Jef Wijsen
2003 A conf
Condensed Representation of Database Repairs for Consistent Query Answering.
ICDT
Jef Wijsen
2003 — conf
Logical Languages for Data Mining.
Logics for Emerging Applications of Databases
Fosca Giannotti, Giuseppe Manco, Jef Wijsen
2003 J jnl
On query optimization in a temporal SPC algebra.
Data Knowl. Eng.
Jef Wijsen, Alexis Bès
2002 J jnl
Searching for dependencies at multiple abstraction levels.
ACM Trans. Database Syst.
Toon Calders, Raymond T. Ng, Jef Wijsen
2001 B conf
Neighborhood Dependencies for Prediction.
PAKDD
Renaud Bassée, Jef Wijsen
2001 — conf
On Monotone Data Mining Languages.
DBPL
Toon Calders, Jef Wijsen
2001 C conf
Temporal Tableau Queries.
TIME
Jef Wijsen, Alexis Bès
2001 J jnl
Trends in Databases: Reasoning and Mining.
IEEE Trans. Knowl. Data Eng.
Jef Wijsen
1999 A* conf
Discovering Roll-Up Dependencies.
KDD
Jef Wijsen, Raymond T. Ng, Toon Calders
1999 — conf
Temporal Dependencies Generalized for Spatial and Other Dimensions.
Spatio-Temporal Database Management
Jef Wijsen, Raymond T. Ng
1999 J jnl
Temporal FDs on Complex Objects.
ACM Trans. Database Syst.
Jef Wijsen
1998 — conf
Nested Data Cubes for OLAP (Extended Abstract).
ER Workshops
Stijn Dekeyser, Bart Kuijpers, Jan Paredaens, Jef Wijsen
1998 J jnl
On the Complexity of Mining Quantitative Association Rules.
Data Min. Knowl. Discov.
Jef Wijsen, Robert Meersman
1998 J jnl
Reasoning about Qualitative Trends in Databases.
Inf. Syst.
Jef Wijsen
1997 — conf
On the Complexity of Mining Temporal Trends.
DMKD
Jef Wijsen, Robert Meersman
1995 — conf
Design of Temporal Relational Databases Based on Dynamic and Temporal Functional Dependencies
Temporal Databases
Jef Wijsen
1994 — conf
Temporal Dependencies in Relational Database Design.
BDA
Jef Wijsen, Jacques Vandenbulcke, Henke Olivie
1993 — conf
A Theory of Keys for Temporal Databases.
BDA
Jef Wijsen
1993 A conf
Functional Dependencies Generalized for Temporal Databases that Include Object-Identity.
ER
Jef Wijsen, Jacques Vandenbulcke, Henke Olivie