Hello, nice to have you here.
I am a professor at the Gottfried Wilhelm Leibniz Universität Hannover, Germany.
I head the research group Algorithms.
I obtained my Bachelor’s and Master’s Degrees in Computer Science as well as my PhD and Habilitation at Gottfried Wilhelm Leibniz Universität Hannover, Germany.
Research Interests (alphabetical order)
- Argumentation: abstract as well as logic-based
- Artificial Intelligence: logical foundations
- Complexity Theory: algorithmic complexity, parameterised complexity
- Enumeration: parameterised enumeration, enumeration complexity
- Logic in Computer Science: non-classical, non-monotonic, team, temporal, hybrid, modal, default, and autoepistemic logic
News
- [June 2026] Our paper «Parameterised Complexity of Consistent Query Answering via Graph Representations» together with Miika Hannula, Teemu Hankala, and Yasir Mahmood has been accepted at ICDT 2027.
- [Mai 2026] Our paper «Complexity of Logics with Semiring Semantics» together with Timon Barlag, Nicolas Fröhlich, Teemu Hankala, Miika Hannula, Minna Hirvonen, Vivian Holzapfel, Juha Kontinen, and Laura Strieker has been accepted at KR 2026.
- [Mai 2026] Our paper «Representation Theorems for Cumulative Propositional Dependence Logics» together with Juha Kontinen, and Kai Sauerwald has been accepted at KR 2026.
- [Mai 2026] Our paper «A Circuit-Theoretic View of FO over Semirings» together with Timon Barlag, Nicolas Fröhlich, Teemu Hankala, Miika Hannula, Minna Hirvonen, Vivian Holzapfel, Juha Kontinen, and Laura Strieker has been accepted at WoLLIC 2026.
- [Februrary 2026] Our paper «Disjunctions of Two Dependence Atoms» together with Nicolas Fröhlich, and Phokion Kolaitis has been presented at CSL 2026.
Projects
Active
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[RSE-DAAD] Fine-grained complexity classification of CQA
['26 − '27]
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Finished
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[DAAD] Anwendungen und Komplexität von Logiken in der Semiring-Team-Semantik
['24 − '25]
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[DAAD] Descriptive Complexity of Parameterised Counting Classes
[01'18 − 12'19]
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[MWK] Innovation Plus: Komplexität von Algorithmen
[02'20 − 09'22]
Program Committee Member
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(AAAI) AAAI Conference on Artificial Intelligence (2021, 2023, 2024, 2025)
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(AAMAS) International Conference on Autonomous Agents and Multi-Agent Systems (2024)
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(FCAI) Workshop on Foundations and Future of Change in Artificial Intelligence (2025)
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(FoIKS) International Symposium on Foundations of Information and Knowledge Systems (2024 Co-Chair, 2026)
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(IJCAI) International Joint Conference on Artificial Intelligence (2021, 2022, 2023, 2024, 2025, 2026),
Distinguished PC Member (2021, 2022)
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(JELIA) European Conference on Logics in Artificial Intelligence (2025)
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(LLC) International Workshop on Logic and Computational Complexity (2019)
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(PRICAI) Pacific Rim International Conference Series on Artificial Intelligence (2024)
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(STACS) International Symposium on Theoretical Aspects of Computer Science (2023)
Steering Committee Member
(FoIKS) International Symposium on Foundations of Information and Knowledge Systems
Conference Reviewing
- AAAI (2021, 2023, 2024, 2025)
- AAMAS (2024)
- AiML (2014)
- CiE (2018, 2021, 2022)
- CSL (2018, 2021, 2022, 2024, 2025, 2026)
- CSR (2019)
- ESA (2021, 2022)
- FoIKS (2024, 2026)
- FoSSaCS (2015)
- ICALP (2014, 2020, 2021, 2026)
- IJCAI (2021−2025)
- JELIA (2023, 2025)
- LICS (2022, 2023)
- LODE (2020, 2021)
- KR (2024)
- MFCS (2016, 2022, 2025)
- SAT (2012−2014, 2018, 2023)
- STACS (2012, 2014−2018, 2020, 2021, 2023, 2025, 2026)
- STOC (2022)
- TAMC (2011)
- WoLLIC (2016)
Journal Reviewing
Project Application Reviewing
Publications
Conference
Journal
Theses
Editorship
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