Markus Krötzsch

From International Center for Computational Logic

Prof. Dr. Markus Krötzsch

ProfessorTechnische Universität DresdenInternational Center for Computational Logic Knowledge-Based Systems

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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Raimund Dachselt, Sarah Alice Gaggl, Markus Krötzsch, Julián Méndez, Dominik Rusovac, Mei Yang
NEXAS: A Visual Tool for Navigating and Exploring Argumentation Solution Spaces
In Francesca Toni, eds., Proceedings of the 9th International Conference on Computational Models of Argument (COMMA 2022), volume 220146 of FAIA, 116-127, September 2022. IOS Press
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Ali Elhalawati, Markus Krötzsch, Stephan Mennicke
An Existential Rule Framework for Computing Why-Provenance On-Demand for Datalog
Proceddings of the 6th International Joint Conference on Rules and Reasoning (RuleML+RR 2022), to appear. Springer
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Maximilian Marx, Markus Krötzsch
Tuple-Generating Dependencies Capture Complex Values (extended abstract)
In Mario Alviano, Andreas Pieris, eds., Proceedings of the 4th International Workshop on the Resurgence of Datalog in Academia and Industry, volume 3203 of CEUR Workshop Proceedings, 97--103, September 2022.
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Sarah Alice Gaggl, Philipp Hanisch, Markus Krötzsch
Simulating Sets in Answer Set Programming
In Luc De Raedt, eds., Proceedings of the 31st International Joint Conference on Artificial Intelligence (IJCAI 2022), 2634--2640, 2022.
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Stefan Ellmauthaler, Markus Krötzsch, Stephan Mennicke
Answering Queries with Negation over Existential Rules
Proceedings of the AAAI Conference on Artificial Intelligence, 36(5), 5626-5633, June 2022
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Alex Ivliev, Larry González, Markus Krötzsch, Stephan Mennicke
Efficient Dependency Analysis for Rule-Based Ontologies
ISWC 2022, to appear
Jacopo Urbani, Markus Krötzsch, Thomas Eiter
Chasing Streams with Existential Rules
Proceedings of the 19th International Conference on Principles of Knowledge Representation and Reasoning (KR 2022), to appear
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Stefan Borgwardt, Jörg Hoffmann, Alisa Kovtunova, Markus Krötzsch, Bernhard Nebel, Marcel Steinmetz
Expressivity of Planning with Horn Description Logic Ontologies (Extended Abstract)
Proceedings of the 35th International Workshop on Description Logics (DL 2022), CEUR Workshop Proceedings, to appear.
Raven Beutner, David Carral, Bernd Finkbeiner, Jana Hofmann, Markus Krötzsch
Deciding Hyperproperties Combined with Functional Specifications
Proceedings of the 37th Annual ACM/IEEE Symposium on Logic in Computer Science (LICS 2022), to appear
Martin Bromberger, Irina Dragoste, Rasha Faqeh, Christof Fetzer, Larry González, Markus Krötzsch, Maximilian Marx, Harish K Murali, Christoph Weidenbach
A Sorted Datalog Hammer for Supervisor Verification Conditions Modulo Simple Linear Arithmetic
In Dana Fisman, Grigore Rosu, eds., Proc. of the 28th Int. Conf. on Tools and Algorithms for the Construction and Analysis of Systems (TACAS 2022), volume 13243 of LNCS, 480-501, 2022. Springer
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Student projects

Completed Theses




Center for Perspicuous Computing

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Innovating Sales and Planning of Complex Industrial Products Exploiting Artificial Intelligence


AI Assisted Certification of Medical Software


School of Embedded Composite Artificial Intelligence


Center for Scalable Data Analytics and Artificial Intelligence

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Semantic MediaWiki
Popular open-source software for collaborative data management

A fast, highly scalable rule engine for existential rules and Datalog.


Wikipedia's free, collaborative knowledge base


Wikidata SPARQL Logs
Access logs from the Wikidata SPARQL Query Service