Prof. Dr. Markus Krötzsch

Professor Knowledge-Based Systems

markus.kroetzsch@tu-dresden.de
Secretary: secretary_wbs@mailbox.tu-dresden.de
Chat (Matrix ): @kroetzsc:tu-dresden.de
+49 351 463 38486
+49 351 463 37959
APB 3033
Consultation hour for students: Thu, 8:30 am – 9:30 am

I am professor for Knowledge-Based Systems at the Institute for Theoretical Computer Science of the Faculty of Computer Science at TU Dresden. The professorship is also part of TUD's Center for Advancing Electronics. My scientific interests are, broadly speaking, in the area of intelligent knowledge management systems. I have made contributions to lightweight and rule-based ontology languages, query answering, reasoning complexity, and content management and integration platforms for the Web of Data. This has led to many publications, but also to introductory texts (including two textbooks) and other teaching materials. I also co-edited the W3C Web Ontology Language standard OWL 2.

My most important applied work at the moment is Wikidata. Other projects I have contributed to include the semantic content management system Semantic MediaWiki and the highly efficient ELK ontology reasoner. Behind each of these projects are a number of truly outstanding people with whom I have had (and still have) the pleasure to work.

Newest Publications

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Markus Krötzsch
Modern Datalog: Concepts, Methods, Applications
In Alessandro Artale, Meghyn Bienvenu, Yazmı́n Ibáñez Garcı́a, Filip Murlak, eds., Joint Proceedings of the 20th and 21st Reasoning Web Summer Schools (RW 2024 & RW 2025), volume 138 of OASIcs, 2025. Dagstuhl Publishing
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Johannes Tantow, Lukas Gerlach, Stephan Mennicke, Markus Krötzsch
Verifying Datalog Reasoning with Lean (Extended Abstract)
KR 2025 - Recently Published Research Track, November 2025
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Piotr Gorczyca, Dörthe Arndt, Martin Diller, Jochen Hampe, Georg Heidenreich, Pascal Kettmann, Markus Krötzsch, Stephan Mennicke, Sebastian Rudolph, Hannes Straß
Supporting Risk Management for Medical Devices via the Riskman Ontology and Shapes
Proceedings of the 21st International Conference on Semantic Systems (SEMANTiCS 2025), to appear
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Johannes Tantow, Lukas Gerlach, Stephan Mennicke, Markus Krötzsch
Verifying Datalog Reasoning with Lean
In Yannick Forster, Chantal Keller, eds., 16th International Conference on Interactive Theorem Proving (ITP 2025), volume 352 of Leibniz International Proceedings in Informatics (LIPIcs), 36:1-36:19, September 2025. Schloss Dagstuhl - Leibniz-Zentrum für Informatik
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Lukas Gerlach, Alex Ivliev, Julián Méndez, Simon Meusel, Raimund Dachselt, Markus Krötzsch
EvonNemo - A Symbiosis of Datalog Tracing and Proof Tree Visualization
The Fifth Workshop on Explainable Logic-Based Knowledge Representation (XLoKR 2024), November 2024
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Nils Küchenmeister, Alex Ivliev, Markus Krötzsch
Towards Mass Spectrum Analysis with ASP
In Carmine Dodaro, Gopal Gupta, Maria Vanina Martinez, eds., Proc. of the 17th International Conference on Logic Programming and Nonmonotonic Reasoning (LPNMR 2024), volume 15245 of LNCS, 200-214, October 2024. Springer
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Alex Ivliev, Lukas Gerlach, Simon Meusel, Jakob Steinberg, Markus Krötzsch
Nemo: Your Friendly and Versatile Rule Reasoning Toolkit
In Pierre Marquis,Magdalena Ortiz,Maurice Pagnucco, eds., Proceedings of the 21st International Conference on Principles of Knowledge Representation and Reasoning (KR 2024), 743-754, 2024. IJCAI Organization
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Alex Ivliev, Lukas Gerlach, Simon Meusel, Jakob Steinberg, Markus Krötzsch
Nemo: A Scalable and Versatile Datalog Engine
In Mario Alviano, Matthias Lanzinger, eds., Proceedings of the 5th International Workshop on the Resurgence of Datalog in Academia and Industry (Datalog-2.0 2024), volume 3801 of CEUR Workshop Proceedings, 43-47, November 2024. CEUR-WS.org
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Philipp Hanisch, Markus Krötzsch
Chase Termination Beyond Polynomial Time
Proc. ACM Manag. Data, 2(2):93, May 2024
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Alex Ivliev, Stefan Ellmauthaler, Lukas Gerlach, Maximilian Marx, Matthias Meißner, Simon Meusel, Markus Krötzsch
Nemo: First Glimpse of a New Rule Engine
In Enrico Pontelli, Stefania Costantini, Carmine Dodaro, Sarah Gaggl, Roberta Calegari, Artur D'Avila Garcez, Francesco Fabiano, Alessandra Mileo, Alessandra Russo, Francesca Toni, eds., Proceedings 39th International Conference on Logic Programming (ICLP 2023), volume 385 of EPTCS, 333--335, September 2023
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