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A Grand Unified Theory of Decidability in Logic-Based Knowledge Representation

CORDIS provides links to public deliverables and publications of HORIZON projects.

Links to deliverables and publications from FP7 projects, as well as links to some specific result types such as dataset and software, are dynamically retrieved from OpenAIRE .

Publications

Exploring Non-Regular Extensions of Propositional Dynamic Logic with Description-Logics Features (opens in new window)

Author(s): Bartosz Bednarczyk
Published in: Logical Methods in Computer Science, Issue Volume 20, Issue 2, 2024, ISSN 1860-5974
Publisher: Technischen Universitat Braunschweig
DOI: 10.46298/lmcs-20(2:7)2024

SATPin: Axiom Pinpointing for Lightweight Description Logics Through Incremental SAT (opens in new window)

Author(s): Norbert Manthey, Rafael Peñaloza, Sebastian Rudolph
Published in: KI - Künstliche Intelligenz, Issue 34/3, 2020, Page(s) 389-394, ISSN 0933-1875
Publisher: Springer
DOI: 10.1007/s13218-020-00669-4

Nested sequents for intermediate logics: the case of Gödel-Dummett logics (opens in new window)

Author(s): Tim S. Lyon
Published in: Journal of Applied Non-Classical Logics, Issue 33, 2023, Page(s) 121-164, ISSN 1166-3081
Publisher: Taylor and Francis
DOI: 10.1080/11663081.2023.2233346

Taking Bi-Intuitionistic Logic First-Order: A Proof-Theoretic Investigation via Polytree Sequents (opens in new window)

Author(s): Lyon, Tim S.; Shillito, Ian; Tiu, Alwen
Published in: Leibniz International Proceedings in Informatics (LIPIcs), Issue 23, 2025, Page(s) 41:1-41:23, ISSN 1868-8969
Publisher: Schloss Dagstuhl -- Leibniz-Zentrum fuer Informatik
DOI: 10.48550/arxiv.2404.15855

About the Expressive Power and Complexity of Order-Invariance with Two Variables (opens in new window)

Author(s): Bartosz Bednarczyk, Julien Grange
Published in: Logical Methods in Computer Science, Issue Volume 21, Issue 1, 2025, ISSN 1860-5974
Publisher: Technischen Universitat Braunschweig
DOI: 10.46298/lmcs-21(1:30)2025

On the Decomposition of Abstract Dialectical Frameworks and the Complexity of Naive-based Semantics (opens in new window)

Author(s): Sarah Alice Gaggl, Sebastian Rudolph, Hannes Straß
Published in: Journal of Artificial Intelligence Research, Issue 70, 2021, Page(s) 1-64, ISSN 1076-9757
Publisher: Morgan Kaufmann Publishers, Inc.
DOI: 10.1613/jair.1.11348

The classification of homomorphism homogeneous tournaments (opens in new window)

Author(s): Thomas Feller, Christian Pech, Maja Pech
Published in: European Journal of Combinatorics, Issue 89, 2020, Page(s) 103142, ISSN 0195-6698
Publisher: Academic Press
DOI: 10.1016/j.ejc.2020.103142

Decidability of Querying First-Order Theories via Countermodels of Finite Width (opens in new window)

Author(s): Thomas Feller, Tim S. Lyon, Piotr Ostropolski-Nalewaja, Sebastian Rudolph
Published in: Logical Methods in Computer Science, Issue Volume 21, Issue 2, 2025, ISSN 1860-5974
Publisher: Technischen Universitat Braunschweig
DOI: 10.46298/lmcs-21(2:7)2025

How to Tell Easy from Hard: Complexities of Conjunctive Query Entailment in Extensions of ALC (opens in new window)

Author(s): Bartosz Bednarczyk, Sebastian Rudolph
Published in: Journal of Artificial Intelligence Research, Issue 78, 2023, ISSN 1076-9757
Publisher: Morgan Kaufmann Publishers, Inc.
DOI: 10.1613/jair.1.14482

Unifying Sequent Systems for Gödel-Löb Provability Logic via Syntactic Transformations (opens in new window)

Author(s): Tim S. Lyon
Published in: Leibniz International Proceedings in Informatics (LIPIcs), Issue Volume 326, 2025, Page(s) pp. 42:1-42:23, ISSN 1868-8969
Publisher: Schloss Dagstuhl - Leibniz Center for Informatics
DOI: 10.4230/lipics.csl.2025.42

Proof Theory and Decision Procedures for Deontic STIT Logics (opens in new window)

Author(s): Tim S. Lyon, Kees Van Berkel
Published in: Journal of Artificial Intelligence Research, Issue 81, 2024, Page(s) 837-876, ISSN 1076-9757
Publisher: Morgan Kaufmann Publishers, Inc.
DOI: 10.1613/jair.1.15710

A Logical Analysis of Instrumentality Judgments: Means-End Relations in the Context of Experience and Expectations (opens in new window)

Author(s): Kees van Berkel, Tim S. Lyon, Matteo Pascucci
Published in: Journal of Philosophical Logic, Issue 52, 2023, Page(s) 1475-1516, ISSN 0022-3611
Publisher: Kluwer Academic Publishers
DOI: 10.1007/s10992-023-09714-7

Finite-Cliquewidth Sets of Existential Rules – Toward a General Criterion for Decidable yet Highly Expressive Querying (opens in new window)

Author(s): Thomas Feller, Tim Lyon, Piotr Ostropolski-Nalewaja, Sebastian Rudolph
Published in: Proceedings of the 26th International Conference on Database Theory (ICDT 2023), volume 255 of Leibniz International Proceedings in Informatics (LIPIcs), 2023, Page(s) 8:1-18:18
Publisher: Leibniz-Zentrum für Informatik GmbH
DOI: 10.4230/lipics.icdt.2023.18

Standpoint Linear Temporal Logic (opens in new window)

Author(s): Nicola Gigante, Lucía Gómez Álvarez, Tim S. Lyon
Published in: Proceedings of the Twentieth International Conference on Principles of Knowledge Representation and Reasoning, 2023, Page(s) 311-321
Publisher: International Joint Conferences on Artificial Intelligence Organization
DOI: 10.24963/kr.2023/31

Nested Sequents for First-Order Modal Logics via Reachability Rules (opens in new window)

Author(s): Lyon, Tim S.
Published in: Automated Reasoning with Analytic Tableaux and Related Methods, Issue 4, 2023
Publisher: Springer
DOI: 10.48550/arxiv.2210.00789

Nested Sequents for Intuitionistic Modal Logics via Structural Refinement (opens in new window)

Author(s): Tim S. Lyon
Published in: International Conference on Automated Reasoning with Analytic Tableaux and Related Methods (TABLEAUX 2021), 2021, Page(s) pp 409-427
Publisher: SpringerLink
DOI: 10.1007/978-3-030-86059-2_24

Datalog-Expressibility for Monadic and Guarded Second-Order Logic (opens in new window)

Author(s): Manuel Bodirsky, Simon Knäuer, Sebastian Rudolph
Published in: LIPIcs–Leibniz International Proceedings in Informatics, 2021, Page(s) 20:1–120:17
Publisher: Schloss Dagstuhl- Leibniz-Zentrum fur Informatik GmbH, Dagstuhl Publishing
DOI: 10.4230/lipics.icalp.2021.120

Sequentiality of Group-Weighted Tree Automata (opens in new window)

Author(s): Frederic Dörband, Thomas Feller, Kevin Stier
Published in: International Conference on Language and Automata Theory and Applications (LATA 2021), Issue 2021, 2021, Page(s) pp 267–278
Publisher: SpringerLink
DOI: 10.1007/978-3-030-68195-1_21

Data Complexity in Expressive Description Logics with Path Expressions (opens in new window)

Author(s): Bartosz Bednarczyk
Published in: Proceedings of the Thirty-ThirdInternational Joint Conference on Artificial Intelligence, 2024, Page(s) 3241-3249
Publisher: International Joint Conferences on Artificial Intelligence Organization
DOI: 10.24963/ijcai.2024/359

To Lead or to be Led: A Generalized Condorcet Jury Theorem under Dependence (opens in new window)

Author(s): Jonas Karge, Juliette-Michelle Burkhardt, Sebastian Rudolph, Dominik Rusovac
Published in: AAMAS '24: Proceedings of the 23rd International Conference on Autonomous Agents and Multiagent System, 2024, Page(s) 983-991
Publisher: ACM Digital Library
DOI: 10.5555/3635637.3662953

Towards Model Theory of Ordered Logics: Expressivity and Interpolation (opens in new window)

Author(s): Bartosz Bednarczyk, Reijo Jaakkola
Published in: Proceedings of the 47th International Symposium on Mathematical Foundations of Computer Science (MFCS 2022), volume 241, 2022
Publisher: Schloss Dagstuhl Leibniz-Zentrum für Informatik GmbH
DOI: 10.4230/lipics.mfcs.2022.15

Tractable Diversity: Scalable Multiperspective Ontology Management via Standpoint EL (opens in new window)

Author(s): Lucía Gómez Álvarez, Sebastian Rudolph, Hannes Strass
Published in: Proceedings of the Thirty-Second International Joint Conference on Artificial Intelligence, 2023, Page(s) 3258-3267
Publisher: International Joint Conferences on Artificial Intelligence Organization
DOI: 10.24963/ijcai.2023/363

Pushing the Boundaries of Tractable Multiperspective Reasoning: A Deduction Calculus for Standpoint EL+ (opens in new window)

Author(s): Lucía Gómez Álvarez, Sebastian Rudolph, Hannes Strass
Published in: Proceedings of the Twentieth International Conference on Principles of Knowledge Representation and Reasoning, 2023, Page(s) 333-343
Publisher: International Joint Conferences on Artificial Intelligence Organization
DOI: 10.24963/kr.2023/33

On the Limits of Decision: the Adjacent Fragment of First-Order Logic (opens in new window)

Author(s): Bednarczyk, Bartosz; Kojelis, Daumantas; Pratt-Hartmann, Ian
Published in: Bednarczyk , B , Kojelis , D & Pratt-Hartmann , I 2023 , On the Limits of Decision: the Adjacent Fragment of First-Order Logic . in 50th International Colloquium on Automata, Languages, and Programming : (ICALP 2023) . https://doi.org/10.4230/LIPIcs.ICALP.2023.111, Issue 1, 2023
Publisher: Schloss Dagstuhl - Leibniz Center for Informatics
DOI: 10.4230/lipics.icalp.2023.111

The Sticky Path to Expressive Querying: Decidability of Navigational Queries under Existential Rules (opens in new window)

Author(s): Piotr Ostropolski-Nalewaja, Sebastian Rudolph
Published in: Proceedings of the TwentyFirst International Conference on Principles of Knowledge Representation and Reasoning, 2024, Page(s) 574-584
Publisher: International Joint Conferences on Artificial Intelligence Organization
DOI: 10.24963/kr.2024/54

Finite Model Theory of the Triguarded Fragment and Related Logics (opens in new window)

Author(s): Emanuel Kieronski, Sebastian Rudolph
Published in: 2021 36th Annual ACM/IEEE Symposium on Logic in Computer Science (LICS), 2021, Page(s) 1-13, ISBN 978-1-6654-4895-6
Publisher: IEEE
DOI: 10.1109/lics52264.2021.9470734

Semantic Characterizations of AGM Revision for Tarskian Logics (opens in new window)

Author(s): Faiq Miftakhul Falakh, Sebastian Rudolph, Kai Sauerwald
Published in: Proceedings of the 6th International Joint Conference on Rules and Reasoning (RuleML+RR 2022), volume 13752 of LNCS, 2022
Publisher: SpringerLink
DOI: 10.1007/978-3-031-21541-4_7

How to Agree to Disagree (opens in new window)

Author(s): Lucía Gómez Álvarez, Sebastian Rudolph, Hannes Straß
Published in: Proceedings of the 21st International Semantic Web Conference (ISWC 22), volume 13489 of Lecture Notes in Computer Science, 2022
Publisher: SpringerLink
DOI: 10.1007/978-3-031-19433-7_8

A Journey to the Frontiers of Query Rewritability (opens in new window)

Author(s): Piotr Ostropolski-Nalewaja, Jerzy Marcinkowski, David Carral, Sebastian Rudolph
Published in: Proceedings of the 41st Symposium on Principles of Database Systems (PODS'22), 2022, Page(s) 359-367
Publisher: ACM Digital Library
DOI: 10.1145/3517804.3524163

Reasoning in SHIQ with Axiom- and Concept-Level Standpoint Modalities (opens in new window)

Author(s): Lucía Gómez Álvarez, Sebastian Rudolph
Published in: Proceedings of the TwentyFirst International Conference on Principles of Knowledge Representation and Reasoning, 2024, Page(s) 383-393, ISBN 978-1-956792-05-8
Publisher: International Joint Conferences on Artificial Intelligence Organization
DOI: 10.24963/kr.2024/36

Satisfiability Checking and Conjunctive Query Answering in Description Logics with Global and Local Cardinality Constraints

Author(s): Franz Baader, Bartosz Bednarczyk, Sebastian Rudolph
Published in: Proceedings of the 32nd International Workshop on Description Logics, Issue 2373, 2019, ISSN 1613-0073
Publisher: CEUR.org

The Power of the Terminating Chase (Invited Talk) (opens in new window)

Author(s): Krötzsch, Markus ; Marx, Maximilian ; Rudolph, Sebastian
Published in: 22nd International Conference on Database Theory (ICDT 2019), Issue 127, 2019, ISBN 978-3-95977-101-6
Publisher: Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik
DOI: 10.4230/lipics.icdt.2019.3

Worst-Case Optimal Querying of Very Expressive Description Logics with Path Expressions and Succinct Counting (opens in new window)

Author(s): Bartosz Bednarczyk, Sebastian Rudolph
Published in: Proceedings of the Twenty-Eighth International Joint Conference on Artificial Intelligence, 2019, Page(s) 1530-1536, ISBN 978-0-9992411-4-1
Publisher: International Joint Conferences on Artificial Intelligence Organization
DOI: 10.24963/ijcai.2019/212

The Triguarded Fragment of First-Order Logic (opens in new window)

Author(s): Sebastian Rudolph, Mantas Simkus
Published in: EPiC Series in Computing volume 57, Issue vol 57, 2018, Page(s) 604-587, ISSN 2398-7340
Publisher: EasyChair
DOI: 10.29007/m8ts

Worst-Case Optimal Querying of Very Expressive Description Logics with Path Expressions and Succinct Counting

Author(s): Bartosz Bednarczyk, Sebastian Rudolph
Published in: Proceedings of the 32nd International Workshop on Description Logics, Issue 2373, 2019, ISSN 1613-0073
Publisher: CEUR.org

Decidable (Ac)counting with Parikh and Muller: Adding Presburger Arithmetic to Monadic Second-Order Logic over Tree-Interpretable Structures (opens in new window)

Author(s): Herrmann, Luisa; Peth, Vincent; Rudolph, Sebastian
Published in: Decidable (Ac)counting with Parikh and Muller: Adding Presburger Arithmetic to Monadic Second-Order Logic over Tree-Interpretable Structures, Issue 11, 2024, ISSN 1868-8969
Publisher: Schloss Dagstuhl - Leibniz Center for Informatics
DOI: 10.48550/arxiv.2305.01962

Approximated Determinisation of Weighted Tree Automata (opens in new window)

Author(s): Frederic Dörband, Thomas Feller, Kevin Stier
Published in: International Conference on Language and Automata Theory and Applications (LATA 2021), Issue LATA2021, 2021, Page(s) pp 255–266
Publisher: SpringerLink
DOI: 10.1007/978-3-030-68195-1_20

All-Instances Oblivious Chase Termination is Undecidable for Single-Head Binary TGDs (opens in new window)

Author(s): Bartosz Bednarczyk, Robert Ferens, Piotr Ostropolski-Nalewaja
Published in: Proceedings of the Twenty-Ninth International Joint Conference on Artificial Intelligence, 2020, Page(s) 1719-1725, ISBN 978-0-9992411-6-5
Publisher: International Joint Conferences on Artificial Intelligence Organization
DOI: 10.24963/ijcai.2020/238

Constructive Interpolation and Concept-Based Beth Definability for Description Logics via Sequents (opens in new window)

Author(s): Timothy S. Lyon, Jonas Karge
Published in: Proceedings of the Thirty-ThirdInternational Joint Conference on Artificial Intelligence, 2024, Page(s) 3484-3492
Publisher: International Joint Conferences on Artificial Intelligence Organization
DOI: 10.24963/ijcai.2024/386

Decidability of Quasi-Dense Modal Logics (opens in new window)

Author(s): Tim Lyon, Piotr Ostropolski-Nalewaja
Published in: Proceedings of the 39th Annual ACM/IEEE Symposium on Logic in Computer Science, Issue 60, 2024, Page(s) 1-8
Publisher: ACM, LICS'24
DOI: 10.1145/3661814.3662111

The Price of Selfishness: Conjunctive Query Entailment for ALCSelf Is 2EXPTIME-Hard (opens in new window)

Author(s): Bednarczyk, Bartosz; Rudolph, Sebastian
Published in: Proceedings of the 36th AAAI Conference on Artificial Intelligence (AAAI 2022), 2022, Page(s) 5495-5502
Publisher: PKP Publishing Services Network
DOI: 10.1609/aaai.v36i5.20488

A Framework for Reasoning about Dynamic Axioms in Description Logics (opens in new window)

Author(s): Bartosz Bednarczyk, Stephane Demri, Alessio Mansutti
Published in: Proceedings of the Twenty-Ninth International Joint Conference on Artificial Intelligence, 2020, Page(s) 1681-1687, ISBN 978-0-9992411-6-5
Publisher: International Joint Conferences on Artificial Intelligence Organization
DOI: 10.24963/ijcai.2020/233

Connecting Proof Theory and Knowledge Representation: Sequent Calculi and the Chase with Existential Rules (opens in new window)

Author(s): Tim S. Lyon, Piotr Ostropolski-Nalewaja
Published in: Proceedings of the Twentieth International Conference on Principles of Knowledge Representation and Reasoning, 2023, Page(s) 769-773
Publisher: International Joint Conferences on Artificial Intelligence Organization
DOI: 10.24963/kr.2023/79

Bounded Treewidth and the Infinite Core Chase: Complications and Workarounds toward Decidable Querying (opens in new window)

Author(s): Jean-François Baget, Marie-Laure Mugnier, Sebastian Rudolph
Published in: Proceedings of the 42nd ACM SIGMOD-SIGACT-SIGAI Symposium on Principles of Database Systems, 2024, Page(s) 291-302
Publisher: ACM
DOI: 10.1145/3584372.3588659

On Logics and Homomorphism Closure (opens in new window)

Author(s): Manuel Bodirsky, Thomas Feller, Simon Knauer, Sebastian Rudolph
Published in: 2021 36th Annual ACM/IEEE Symposium on Logic in Computer Science (LICS), 2021, Page(s) 1-13, ISBN 978-1-6654-4895-6
Publisher: IEEE
DOI: 10.1109/lics52264.2021.9470511

Automating Reasoning with Standpoint Logic via Nested Sequents (opens in new window)

Author(s): Tim Lyon, Lucía Gómez Álvarez
Published in: In Proceedings of the 19th International Conference on Principles of Knowledge Representation and Reasoning — Main Track., 2022, Page(s) 257-266
Publisher: IJCAI Organization
DOI: 10.24963/kr.2022/26

Finite Entailment of Local Queries in the Z family of Description Logics (opens in new window)

Author(s): Bartosz Bednarczyk, Emanuel Kieroński
Published in: Proceedings of the 36th AAAI Conference on Artificial Intelligence (AAAI 2022), 2022, Page(s) 5487--5494
Publisher: PKP Publishing Services Network
DOI: 10.1609/aaai.v36i5.20487

Capturing Homomorphism-Closed Decidable Queries with Existential Rules (opens in new window)

Author(s): Camille Bourgaux, David Carral, Markus Krötzsch, Sebastian Rudolph, Michaël Thomazo
Published in: Proc. 18th International Conference on Principles of Knowledge Representation and Reasoning (KR'21), 2021, Page(s) 141-150
Publisher: International Joint Conferences on Artificial Intelligence (IJCAI)
DOI: 10.24963/ijcai.2022/733

Derivation-Graph-Based Characterizations of Decidable Existential Rule Sets (opens in new window)

Author(s): Tim S. Lyon, Sebastian Rudolph
Published in: Lecture Notes in Computer Science, Logics in Artificial Intelligence, 2023, Page(s) 369-384
Publisher: Springer Nature Switzerland
DOI: 10.1007/978-3-031-43619-2_26

Beyond $$\mathcal {ALC}_{\textsf {reg}}$$: Exploring Non-Regular Extensions of PDL with Description Logics Features (opens in new window)

Author(s): Bartosz Bednarczyk
Published in: Lecture Notes in Computer Science, Logics in Artificial Intelligence, 2023, Page(s) 289-305
Publisher: Springer Nature Switzerland
DOI: 10.1007/978-3-031-43619-2_21

A Framework for Intuitionistic Grammar Logics (opens in new window)

Author(s): Tim S. Lyon
Published in: Logic and Argumentation - 4th International Conference, CLAR 2021, Hangzhou, China, October 20–22, 2021, Proceedings, Issue 13040, 2021, Page(s) 495-503, ISBN 978-3-030-89390-3
Publisher: Springer International Publishing
DOI: 10.1007/978-3-030-89391-0_29

Exploiting Forwardness: Satisfiability and Query-Entailment in Forward Guarded Fragment (opens in new window)

Author(s): Bartosz Bednarczyk
Published in: Logics in Artificial Intelligence - 17th European Conference, JELIA 2021, Virtual Event, May 17–20, 2021, Proceedings, Issue 12678, 2021, Page(s) 179-193, ISBN 978-3-030-75774-8
Publisher: Springer International Publishing
DOI: 10.1007/978-3-030-75775-5_13

Temporally Attributed Description Logics (opens in new window)

Author(s): Ana Ozaki, Markus Krötzsch, Sebastian Rudolph
Published in: Description Logic, Theory Combination, and All That - Essays Dedicated to Franz Baader on the Occasion of His 60th Birthday, Issue 11560, 2019, Page(s) 441-474, ISBN 978-3-030-22101-0
Publisher: Springer International Publishing
DOI: 10.1007/978-3-030-22102-7_21

Explaining Data with Formal Concept Analysis (opens in new window)

Author(s): Bernhard Ganter, Sebastian Rudolph, Gerd Stumme
Published in: Reasoning Web. Explainable Artificial Intelligence - 15th International Summer School 2019, Bolzano, Italy, September 20–24, 2019, Tutorial Lectures, Issue 11810, 2019, Page(s) 153-195, ISBN 978-3-030-31422-4
Publisher: Springer International Publishing
DOI: 10.1007/978-3-030-31423-1_5

SPARQL Queries over Ontologies Under the Fixed-Domain Semantics (opens in new window)

Author(s): Sebastian Rudolph, Lukas Schweizer, Zhihao Yao
Published in: PRICAI 2019: Trends in Artificial Intelligence - 16th Pacific Rim International Conference on Artificial Intelligence, Cuvu, Yanuca Island, Fiji, August 26–30, 2019, Proceedings, Part I, Issue 11670, 2019, Page(s) 486-499, ISBN 978-3-030-29907-1
Publisher: Springer International Publishing
DOI: 10.1007/978-3-030-29908-8_39

Presburger Concept Cardinality Constraints in Very Expressive Description Logics - Allegro sexagenarioso ma non ritardando (opens in new window)

Author(s): “Johann” Sebastian Rudolph
Published in: Description Logic, Theory Combination, and All That - Essays Dedicated to Franz Baader on the Occasion of His 60th Birthday, Issue 11560, 2019, Page(s) 542-561, ISBN 978-3-030-22101-0
Publisher: Springer International Publishing
DOI: 10.1007/978-3-030-22102-7_25

On Explicit Solutions to Fixed-Point Equations in Propositional Dynamic Logic

Author(s): Tim S. Lyon
Published in: Fundamentals of Software Engineering, 2025, Page(s) 113–119
Publisher: Springer

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