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Description Logics 2021: Bratislava, Slovakia
- Martin Homola, Vladislav Ryzhikov, Renate A. Schmidt:

Proceedings of the 34th International Workshop on Description Logics (DL 2021) part of Bratislava Knowledge September (BAKS 2021), Bratislava, Slovakia, September 19th to 22nd, 2021. CEUR Workshop Proceedings 2954, CEUR-WS.org 2021
Invited Talks
- Claudia d'Amato:

Empowering Knowledge Bases: a Machine Learning Perspective. - Ernesto Jiménez-Ruiz:

Ontology Alignment and the two DLs. - Nicole Schweikardt:

Locality Properties of Extensions of First-Order Logic and their Use in Algorithms (Abstract of Invited Talk). - Luciano Serafini:

Learning and Reasoning with Logic Tensor Networks: the Framework and an Application.
Full Papers
- Ghadah Alghamdi, Renate A. Schmidt, Warren Del-Pinto, Yongsheng Gao:

Upwardly Abstracted Definition-Based Subontologies. - Christian Alrabbaa, Stefan Borgwardt, Nina Knieriemen, Alisa Kovtunova, Anna Milena Rothermel, Frederik Wiehr:

In the Hand of the Beholder: Comparing Interactive Proof Visualizations. - Franz Baader, Patrick Koopmann, Francesco Kriegel, Adrian Nuradiansyah, Rafael Peñaloza:

Privacy-Preserving Ontology Publishing: The Case of Quantified ABoxes w.r.t. a Static Cycle-Restricted EL TBox. - Franz Baader, Maryam Rostamigiv:

Restricted Unification in the DL EL. - Meghyn Bienvenu, Quentin Manière, Michaël Thomazo:

Counting Queries over ELHI⊥ Ontologies. - Piero A. Bonatti, Luigi Sauro:

Tractable Compliance Checking with Negation. - Camille Bourgaux, Ana Ozaki, Jeff Z. Pan:

Geometric Models for (Temporally) Attributed Description Logics. - Cheikh Brahim El Vaigh, François Goasdoué:

A Well-founded Graph-based Summarization Framework for Description Logics. - Diego Calvanese, Alessandro Gianola, Andrea Mazzullo, Marco Montali:

SMT-Based Safety Verification of Data-Aware Processes under Ontologies (Preliminary Results). - Marco Console, Phokion G. Kolaitis, Andreas Pieris:

Model-theoretic Characterizations of Rule-based Ontologies. - Thomas Macaulay Ferguson:

Modeling Intentional States with Subsystems of ALC. - Renan Fernandes, Fred Freitas, Ivan Varzinczak:

A Connection Method for a Defeasible Extension of ALC. - Tim French, Thomas Smoker:

An Aleatoric Description Logic for Probabilistic Reasoning. - Maurice Funk, Jean Christoph Jung

, Carsten Lutz:
Actively Learning ELI Queries under DL-Lite Ontologies. - Pietro Galliani, Oliver Kutz, Nicolas Troquard:

Perceptron Operators That Count. - Zhenzhen Gu

, Songmao Zhang:
DL-Lite Full: A Sub-language of OWL 2 Full for Powerful Meta-modeling. - Willi Hieke, Francesco Kriegel, Adrian Nuradiansyah:

Repairing EL TBoxes by Means of Countermodels Obtained by Model Transformation. - Federico Igne, Stefano Germano, Ian Horrocks:

RSAComb: Combined Approach for CQ Answering in RSA. - Eduard Kamburjan, Egor V. Kostylev:

Type Checking Semantically Lifted Programs via Query Containment under Entailment Regimes. - Spyridon Kantarelis, Edmund Dervakos, Natalia Kotsani, Giorgos Stamou:

Musical Harmony Analysis with Description Logics. - Francesco Kriegel:

Navigating the EL Subsumption Hierarchy. - Chan Le Duc:

Category-theoretical Semantics of the Description Logic ALC. - Zhao Liu, Chang Lu, Ghadah Alghamdi, Renate A. Schmidt, Yizheng Zhao:

Tracking Semantic Evolutionary Changes in Large-Scale Ontological Knowledge Bases. - Barbara Morawska:

Unification in the Description Logic FL⊥. - Rafael Peñaloza:

An Upper Bound for Provenance in ELHr. - Jandson S. Ribeiro

, Ricardo Guimarães, Ana Ozaki:
Revising Ontologies via Models: The ALC-formula Case. - Steven Schockaert, Yazmín Angélica Ibáñez-García, Víctor Gutiérrez-Basulto:

Modelling Concept Interpolation in Description Logics using Abstract Betweenness Relations. - Sabiha Tahrat, Salima Benbernou, Mourad Ouziri:

Temporal ABox Cleaning in TDL-Lite. - David Toman, Grant E. Weddell:

FO Rewritability for OMQ using Beth Definability and Interpolation. - Xinhao Zhu, Xuan Wu, Ruiqing Zhao, Yu Dong, Yizheng Zhao:

Metadata-based Term Selection for Modularization and Uniform Interpolation of OWL Ontologies.
Extended Abstracts
- Shqiponja Ahmetaj, Robert David, Magdalena Ortiz, Axel Polleres, Bojken Shehu, Mantas Simkus

:
Reasoning about Explanations for Non-validation in SHACL (Extended Abstract). - Christian Alrabbaa, Franz Baader, Stefan Borgwardt, Patrick Koopmann, Alisa Kovtunova:

Finding Good Proofs for Description Logic Entailments Using Recursive Quality Measures (Extended Abstract). - Franz Baader, Oliver Fernández Gil, Maryam Rostamigiv:

Restricted Unification in the DL FL0 (Extended Abstract). - Bartosz Bednarczyk, Emanuel Kieronski:

Finite-Controllability of Conjunctive Queries in the Z family of Description Logics (Extended Abstract). - Bartosz Bednarczyk, Sebastian Rudolph

:
The Price of Selfishness: Conjunctive Query Entailment for ALCSelf is 2ExpTime-hard (Extended Abstract). - Meghyn Bienvenu, Quentin Manière, Michaël Thomazo:

Cardinality Queries over DL-Lite Ontologies (Extended abstract). - Stefan Borgwardt, Jörg Hoffmann, Alisa Kovtunova, Marcel Steinmetz:

Making DL-Lite Planning Practical (Extended Abstract). - Diego Calvanese, Avigdor Gal, Naor Haba, Davide Lanti, Marco Montali, Alessandro Mosca, Roee Shraga:

ADaMaP: Automatic Alignment of Relational Data Sources using Mapping Patterns (Abstract). - Claudia Cauli, Meng Li, Nir Piterman, Oksana Tkachuk:

Pre-Deployment Security Assessment for Cloud Services through Semantic Reasoning (Extended Abstract). - Claudia Cauli, Magdalena Ortiz, Nir Piterman:

Closed- and Open-world Reasoning in DL-Lite for Cloud Infrastructure Security (Extended Abstract). - Stefan Borgwardt, Ernie Chang, Kathryn Chapman, Vera Demberg, Alisa Kovtunova, Hui-Syuan Yeh:

Logic-Guided Neural Utterance Generation from Drone Sensory Data (Extended Abstract). - Jieying Chen, Rafael Peñaloza, Hui Yang:

Union and Intersection of all Justifications (Extended Abstract). - Gianluca Cima, Domenico Lembo, Lorenzo Marconi, Riccardo Rosati, Domenico Fabio Savo:

On Information Disclosure in Ontology-based Data Access (Extended Abstract). - Theo Ducros, Marinette Bouet, Farouk Toumani:

Weak Subsumption in the EL-Description Logic with Refreshing Variables (Extended Abstract). - Cristina Feier:

Characterising Fixed Parameter Tractability of Query Evaluation Over Guarded TGDs (Extended Abstract). - Marie Fortin, Boris Konev, Frank Wolter:

Interpolants and Explicit Definitions in Horn Description Logics (Extended Abstract). - Pietro Galliani, Guendalina Righetti, Oliver Kutz, Daniele Porello, Nicolas Troquard:

In a Nutshell: Perceptron Connectives in Knowledge Representation (Extended Abstract). - Laura Giordano, Daniele Theseider Dupré:

Opening the Black-box: Deep Neural Networks as Weighted Conditional Knowledge Bases (Extended Abstract). - Ricardo Guimarães, Ana Ozaki, Cosimo Persia, Baris Sertkaya:

Mining EL⊥ Bases with Adaptable Role Depth (Extended Abstract). - Anneke Haga, Carsten Lutz, Leif Sabellek, Frank Wolter:

How to Approximate Ontology-Mediated Queries (Extended Abstract. - Emanuel Kieronski, Sebastian Rudolph

:
Finite Model Theory of the Triguarded Fragment and Related Logics (Extended Abstract). - Patrick Koopmann:

Signature-Based Abduction with Fresh Individuals and Complex Concepts for Description Logics (Extended Abstract). - Carsten Lutz, Marcin Przybylko:

Enumerating Answers to Ontology-Mediated Queries: Partial Answers and Efficiency (Extended Abstract). - Robin Nolte, Thomas Schneider:

Properties of Module Notions and Atomic Decomposition (Extended Abstract). - Sabiha Tahrat, Germán Alejandro Braun, Alessandro Artale, Ana Ozaki:

Abstracting Temporal ABoxes in TDL-Lite (Extended Abstract).

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