Portrait of Ivan Habernal
  • Computer Science
  • Explainability
  • Natural Language Processing

Trustworthy Human Language Technologies

Prof. Dr. Ivan Habernal

Ruhr University Bochum
Universitätsstraße 150
MC Room 5.135
44799 Bochum
Germany

About

Ivan Habernal is Professor of Trustworthy Human Language Technologies at Ruhr University Bochum and a member of the Research Center Trustworthy Data Science and Security (RC Trust), where he leads the Trustworthy Human Language Technologies (TrustHLT) group. His work focuses on making natural language processing (NLP) systems more trustworthy–particularly by strengthening privacy protection, improving transparency, and ensuring reliable behavior in sensitive domains such as law.

His research spans privacy-preserving NLP and legal NLP, with focus on interdisciplinary perspectives. He develops methods to protect training data and prevent unintended information leakage, while also advancing AI systems that can support the analysis and understanding of legal texts. A key motivation of his work is to make complex information–such as legal knowledge – more accessible, without compromising correctness or trustworthiness.

Before joining RC Trust in April 2024, Ivan Habernal built a strong research profile across areas such as argument mining, computational argumentation, and large-scale text analysis. He is particularly interested in how AI systems interact with human values, norms, and expectations.

Beyond his academic work, Ivan Habernal has a longstanding passion for music. As a trained musician, he continues to engage with music alongside his research–an interplay that reflects both creativity and precision in his work.

Academic Distinctions

  • 2007: M.Sc. in Computer Science, University of West Bohemia, Czech Republic
  • 2012: Ph.D. in Computer Science, University of West Bohemia, Czech Republic
  • 2013–2014: Postdoctoral Researcher, German Institute for International Educational Research, Frankfurt am Main
  • 2015–2018: Postdoctoral Researcher, Ubiquitous Knowledge Processing Lab, TU Darmstadt
  • 2018–2019: Data Scientist, Boehringer Ingelheim GmbH
  • 2019–2020: Lead Data Scientist, bd4travel GmbH, Frankfurt am Main
  • 2020–2023: Researcher and later Independent Research Group Leader, TU Darmstadt
  • 2022–2023: Interim Professor of Computational Linguistics, Ludwig Maximilian University of Munich
  • 2023–2024: Assistant Professor of Natural Language Processing, Paderborn University
  • Since April 2024: Full Professor of Trustworthy Human Language Technologies, Ruhr University Bochum and member of the Research Center Trustworthy Data Science and Security (RC Trust)

Key publications

  • Sebastian Ochs and Ivan Habernal. "The Conundrum of Trustworthy Research on Attacking Personally Identifiable Information Removal Techniques”. In: Computational Linguistics. 52.2 (2026), DOI: 10.1162/COLI.a.615.
  • Subhabrata Dutta, Timo Kaufmann, Goran Glavaš, Ivan Habernal, Kristian Kersting, Frauke Kreuter, Mira Mezini, Iryna Gurevych, Eyke Hüllermeier, and Hinrich Schütze. "Problem Solving Through Human-AI Preference-Based Cooperation". In: Computational Linguistics. 51.4 (2025), pp. 1337–1372. DOI: 10.1162/COLI.a.19.
  • Lena Held and Ivan Habernal. "LaCour!: Enabling Research on Argumentation in Hearings of the European Court of Human Rights". In: Artificial Intelligence and Law (2024). DOI: 10.1007/s10506-024-09428-4.
  • Ivan Habernal, Daniel Faber, Nicola Recchia, Sebastian Bretthauer, Iryna Gurevych, Indra Spiecker genannt Döhmann, and Christoph Burchard. "Mining Legal Arguments in Court Decisions". In: Artificial Intelligence and Law 32 (2023), pp. 1–38. DOI: 10.1007/s10506-023-09361-y.
  • Ivan Habernal and Iryna Gurevych. "Argumentation Mining in User-Generated Web Discourse". In: Computational Linguistics 43.1 (2017), pp. 125–179.
  • Sebastian Ochs and Ivan Habernal. "Private Synthetic Text Generation with Diffusion Models". In: Proceedings of the 2025 Conference of the Nations of the Americas Chapter of the Association for Computational Linguistics: Human Language Technologies (Volume 1: Long Papers). Ed. by Luis Chiruzzo, Alan Ritter, and Lu Wang. Albuquerque, New Mexico: Association for Computational Linguistics, Apr. 2025, pp. 10612–10626. DOI: 10.18653/v1/2025.naacl-long.532.
  • Marius Büttner and Ivan Habernal. "Answering legal questions from laymen in German civil law system". In: Proceedings of the 18th Conference of the European Chapter of the Association for Computational Linguistics (Volume 1: Long Papers). Ed. by Yvette Graham and Matthew Purver. St. Julians, Malta: Association for Computational Linguistics, 2024, pp. 2015–2027.
  • Doan Nam Long Vu, Timour Igamberdiev, and Ivan Habernal. "Granularity is crucial when applying differential privacy to text: An investigation for neural machine translation". In: Findings of the Association for Computational Linguistics: EMNLP 2024. Miami, Florida: Association for Computational Linguistics, 2024.
  • Timour Igamberdiev and Ivan Habernal. "DP-BART for Privatized Text Rewriting under Local Differential Privacy". In: Findings of the Association for Computational Linguistics: ACL 2023. Toronto, Canada: Association for Computational Linguistics, 2023, pp. 13914–13934. DOI: 10.18653/v1/2023.findings-acl.874.
  • Ivan Habernal. "How reparametrization trick broke differentially-private text representation learning". In: Proceedings of the 60th Annual Meeting of the Association for Computational Linguistics (Volume 2: Short Papers). Dublin, Ireland: Association for Computational Linguistics, 2022, pp. 771–777. DOI: 10.18653/v1/2022.acl-short.87.
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