🧑‍🔬 Ivan Koychev

🏛️ Affiliations

🎓Sofia University "St. Kliment Ohridski"Sofia · Bulgaria2009–2026 · 89 paperscurrent🏛️Bulgarian Academy of SciencesSofia · Bulgaria2005–2023 · 5 papers🎓Big Data for Smart Society (GATE) InstituteSofia · Bulgaria2021–2022 · 5 papers🎓Hamad bin Khalifa UniversityDoha · Qatar2016–2021 · 5 papers🔬Institute of Mathematics and InformaticsSofia · Bulgaria2005–2011 · 4 papers🎓Robert Gordon UniversityAberdeen · United Kingdom2003–2004 · 3 papers🎓Sophia UniversityTokyo · Japan2014–2023 · 2 papers🔬Fraunhofer Institute for Applied Information TechnologySankt Augustin · Germany2000–2002 · 2 papers

🏛️Sofiski universitet Sveti Kliment OhridskiSofija · Bulgaria2006Employment since 2006 · Professor, Faculty of Mathematics and Informatics

From the bylines of their papers (OpenAlex, 2026-10-14), ORCID and Wikidata; institutions on papers are matched by machine. 2 more institutions on single bylines are not listed.

🧭 Fields, topics and concepts

Of its works in our library, with the number of works on each.

📅 Works by year

2020s

📄 Papers

The most cited first (OpenAlex and our library).

1. Enigma at #SMM4H–HeaRD 2026: Leveraging Multilingual Pre-trained Models for Clinical Named Entity Recognition (2026 · 1 citation)
   The paper describes the Enigma team's system for MultiClinNER, subtask 1 of the MultiClinAI shared task at SMM4H–HeaRD 2026.
2. Schützen: Evaluating LLM Safety in Bulgarian and German Contexts (2026)
   Most LLM safety benchmarks are built for English or Chinese and usually test other languages one at a time.

All works

5 works of theirs in our library, the most cited first; 2 with a page here, the others link their original until we summarise them.

1. Fact-Checking Meets Fauxtography: Verifying Claims About Images ↗Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing and the 9th International Joint Conference on Natural Language Processing (EMNLP-IJCNLP) · no summary yetDimitrina Zlatkova, Preslav Nakov, Ivan Koychev2019 · 119 citations
2. Enigma at #SMM4H–HeaRD 2026: Leveraging Multilingual Pre-trained Models for Clinical Named Entity RecognitionSocial Media Mining for Health Research and Applications Workshop and Shared TasksSylvia Vassileva, Plamena Ilieva, Teodor Svetoslavov Kostadinov, et al.2026 · 1 citation
3. EurLexSummarization – A New Text Summarization Dataset on EU Legislation in 24 Languages with GPT Evaluation ↗Proceedings of the Sixth International Conference on Computational Linguistics in Bulgaria (CLIB 2024) · no summary yetValentin Zmiycharov, Todor Tsonkov, Ivan Koychev2024 · 1 citation
4. A Comparative Study on Abstractive and Extractive Approaches in Summarization of European Legislation Documents ↗Proceedings of the International Conference on Recent Advances in Natural Language Processing (RANLP 2021) · no summary yetValentin Zmiycharov et al.2021 · 1 citation
5. Schützen: Evaluating LLM Safety in Bulgarian and German ContextsarXiv:2606.11316Kiril Georgiev, Yuxia Wang, Dimitar Iliyanov Dimitrov, et al.2026

🤝 Co-authors here

3 co-authors with a page, the most papers together first.

• Dimitar Iliyanov Dimitrov
• Preslav Nakov
• Yuxia Wang

Venues

Where their works here were published, the most works first, with the editions of those that have a page.

• Annual Meeting of the Association for Computational Linguistics (ACL)
• Social Media Mining for Health Research and Applications Workshop and Shared Tasks: Social Media Mining for Health Research and Applications Workshop and Shared Tasks 2026
• Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing and the 9th International Joint Conference on Natural Language Processing (EMNLP-IJCNLP)
• Proceedings of the International Conference on Recent Advances in Natural Language Processing (RANLP 2021)
• Proceedings of the Sixth International Conference on Computational Linguistics in Bulgaria (CLIB 2024)

🔗 Cited by

Papers of our library cite their works 40 times (of the 149,439 papers whose bibliographies we read); 11 citing papers with a page here →.

Updated 31 October 2026

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