Staff

The many faces of GESIS

Vita

I have been head of the Big Data Analytics team at GESIS since 2025. Before that, I worked as a post-doc and researcher at the Bauhaus University Weimar (PhD 2022).

Research

My main areas of interest are argument search, conversational search, human values, and web archives. I have been the co-organizing the SemEval/PAN 2019 Task for Hyperpartisan News Detection (2019), the SemEval/Touché Task on Human Value Detection (2023, 2024), the SCAI Eval task on evaluating search-oriented conversations (2024), the SCAI-QReCC conversational question answering task (2021), and the Touché Task on Image Retrieval for Arguments (2022, 2023, 2024). I have been co-organizing the workshops SCAI (2024) and Touché (2022, 2023, 2024, 2025).



Publications

Chapter in an edited book

Momeni, Fakhri, Muhammad Taimoor Khan, Johannes Kiesel, and Tony Ross-Hellauer. 2025. "Checklists for Computational Reproducibility in Social Sciences: Insights from Literature and Survey Evaluation." In 3rd ACM Conference for Reproducibility and Replicability (REP 2025), edited by Thomas Pasquier, Ashish Gehani, and Khalid Belhajjame, ACM.

Ionescu, Bogdan, Henning Müller, Dan-Cristian Stanciu, Ahmad Idrissi-Yaghir, Ahmedkhan Radzhabov, Alba García Seco de Herrera, Alexandra-Georgiana Andrei, Andrea Storås, Asma Ben Abacha, Benjamin Bracke, Benjamin Lecouteux, Benno Stein, Cécile Macaire, Christoph M. Friedrich, Cynthia Sabrina Schmidt, Diandra Fabre, Didier Schwab, D. Dimitrov, Emmanuelle Esperança-Rodier, Mihai Gabriel Constantin, Helmut Becker, Hendrik Damm, Henning Schäfer, Ivan Rodkin, Ivan Koychev, Johannes Kiesel, Johannes Rückert, Josep Malvehy, Liviu-Daniel Stefan, Louise Bloch, Martin Potthast, Maximilian Heinrich, Michael A. Riegler, Mihai Dogariu, Noel Codella, Pål Halvorsen, Preslav Nakov, Raphael Brüngel, Roberto Andres Novoa, Rocktim Jyoti Das, Steven A. Hicks, Sushant Gautam, Tabea M. G. Pakull, Vajira Thambawita, Vassili Kovalev, Wen-Wai Yim, and Zhuohan Xie. 2025. "ImageCLEF 2025: Multimedia Retrieval in Medical, Social Media and Content Recommendation Applications." In Advances in Information Retrieval - 47th European Conference on Information Retrieval, edited by Claudia Hauff, Craig Macdonald, Dietmar Jannach, Gabriella Kazai, Franco Maria Nardini, Fabio Pinelli, Fabrizio Silvestri, and Nicola Tonellotto, Lecture Notes in Computer Science 15576, 398-406. Springer.

Ionescu, Bogdan, Henning Müller, Dan-Cristian Stanciu, Alexandra-Georgiana Andrei, Ahmedkhan Radzhabov, Yuri Prokopchuk, Liviu-Daniel Stefan, Mihai Gabriel Constantin, Mihai Dogariu, Vassili Kovalev, Hendrik Damm, Johannes Rückert, Asma Ben Abacha, Alba García Seco de Herrera, Christoph M. Friedrich, Louise Bloch, Raphael Brüngel, Ahmad Idrissi-Yaghir, Henning Schäfer, Cynthia Sabrina Schmidt, Tabea M. G. Pakull, Benjamin Bracke, Obioma Pelka, Bahadır Eryılmaz, Helmut Becker, Wen-Wai Yim, Noel Codella, Roberto Andres Novoa, Josep Malvehy, D. Dimitrov, Rocktim Jyoti Das, Zhuohan Xie, Ming Shan Hee, Preslav Nakov, Ivan Koychev, Steven A. Hicks, Sushant Gautam, Michael A. Riegler, Vajira Thambawita, Pål Halvorsen, Diandra Fabre, Cécile Macaire, Benjamin Lecouteux, Didier Schwab, Martin Potthast, Maximilian Heinrich, Johannes Kiesel, Moritz Wolter, Sharat Anand, and Benno Stein. 2025. "Overview of ImageCLEF 2025: Multimedia Retrieval in Medical, Social Media and Content Recommendation Applications." In Experimental IR Meets Multilinguality, Multimodality, and Interaction. 16th International Conference of the CLEF Association (CLEF 2025), edited by Jorge Carrillo-de-Albornoz, Julio Gonzalo, Laura Plaza, Alba García Seco de Herrera, Josiane Mothe, Florina Piroi, Paolo Rosso, Damiano Spina, Guglielmo Faggioli, and Nicola Ferro, Lecture Notes in Computer Science. Berlin: Springer.

Kiesel, Johannes, Çağrı Çöltekin, Marcel Gohsen, Sebastian Heineking, Maximilian Heinrich, Maik Fröbe, Tim Hagen, Mohammad Aliannejadi, Sharat Anand, Tomaž Erjavec, Matthias Hagen, Matyáš Kopp, Nikola Ljubešić, Katja Meden, Nailia Mirzakhmedova, Vaidas Morkevičius, Harrisen Scells, Moritz Wolter, Ines Zelch, Martin Potthast, and Benno Stein. 2025. "Overview of Touché 2025: Argumentation Systems." In Experimental IR Meets Multilinguality, Multimodality, and Interaction. 16th International Conference of the CLEF Association (CLEF 2025), edited by Jorge Carrillo-de-Albornoz, Julio Gonzalo, Laura Plaza, Alba García Seco de Herrera, Josiane Mothe, Florina Piroi, Paolo Rosso, Damiano Spina, Guglielmo Faggioli, and Nicola Ferro, Lecture Notes in Computer Science. Berlin: Springer.

Kiesel, Johannes, Çağrı Çöltekin, Marcel Gohsen, Sebastian Heineking, Maximilian Heinrich, Maik Fröbe, Tim Hagen, Mohammad Aliannejadi, Tomaž Erjavec, Matthias Hagen, Matyáš Kopp, Nikola Ljubešić, Katja Meden, Nailia Mirzakhmedova, Vaidas Morkevičius, Harrisen Scells, Ines Zelch, Martin Potthast, and Benno Stein. 2025. "Overview of Touché 2025: Argumentation Systems." In Advances in Information Retrieval - 47th European Conference on Information Retrieval, edited by Claudia Hauff, Craig Macdonald, Dietmar Jannach, Gabriella Kazai, Franco Maria Nardini, Fabio Pinelli, Fabrizio Silvestri, and Nicola Tonellotto, Lecture Notes in Computer Science 15576, 459-466. Springer.

Kiesel, Johannes, Çağrı Çöltekin, Marcel Gohsen, Sebastian Heineking, Maximilian Heinrich, Maik Fröbe, Tim Hagen, Mohammad Aliannejadi, Sharat Anand, Tomaž Erjavec, Matthias Hagen, Matyáš Kopp, Nikola Ljubešić, Katja Meden, Nailia Mirzakhmedova, Vaidas Morkevičius, Harrisen Scells, Moritz Wolter, Ines Zelch, Martin Potthast, and Benno Stein. 2025. "Overview of Touché 2025: Argumentation Systems." In Working Notes of the Conference and Labs of the Evaluation Forum, edited by Guglielmo Faggioli, Nicola Ferro, Paolo Rosso, and Damiano Spina, CEUR Workshop Proceedings 4038, 4536-4562. CEUR-WS.org.

Zelch, Ines, Matthias Hagen, Benno Stein, and Johannes Kiesel. 2025. "Reproducing the Argument Quality Prediction of Project Debater." In Proceedings of the 12th Workshop on Argument Mining (ArgMining 2025), edited by Elena Chistova, Philipp Cimiano, Shohreh Haddadan, Gabriella Lapesa, and Ramon Ruiz-Dolz, Association for Computational Linguistics (ACL).

Zelch, Ines, Matthias Hagen, Benno Stein, and Johannes Kiesel. 2025. "Segmentation of Argumentative Texts by Key Statements for Argument Mining from the Web." In Proceedings of the 12th Workshop on Argument Mining (ArgMining 2025), edited by Elena Chistova, Philipp Cimiano, Shohreh Haddadan, Gabriella Lapesa, and Ramon Ruiz-Dolz, Association for Computational Linguistics (ACL).

Kanadan, Midhun, Johannes Kiesel, Maximilian Heinrich, and Benno Stein. 2025. "Webis at CQs-Gen 2025: Prompting and Reranking for Critical Questions." In Proceedings of the 12th Workshop on Argument Mining (ArgMining 2025), edited by Elena Chistova, Philipp Cimiano, Shohreh Haddadan, Gabriella Lapesa, and Ramon Ruiz-Dolz, Association for Computational Linguistics (ACL).

Presentation at a conference

Momeni, Fakhri, Muhammad Taimoor Khan, Johannes Kiesel, and Tony Ross-Hellauer. 2025. "Checklists for Computational Reproducibility in Social Sciences: Insights from Literature and Survey Evaluation." 3rd ACM Conference for Reproducibility and Replicability, University of British Columbia, Vancouver, 2025-07-29.

Ionescu, Bogdan, Henning Müller, Dan-Cristian Stanciu, Alexandra-Georgiana Andrei, Ahmedkhan Radzhabov, Yuri Prokopchuk, Liviu-Daniel Stefan, Mihai Gabriel Constantin, Mihai Dogariu, Vassili Kovalev, Hendrik Damm, Johannes Rückert, Asma Ben Abacha, Alba García Seco de Herrera, Christoph M. Friedrich, Louise Bloch, Raphael Brüngel, Ahmad Idrissi-Yaghir, Henning Schäfer, Cynthia Sabrina Schmidt, Tabea M. G. Pakull, Benjamin Bracke, Obioma Pelka, Bahadır Eryılmaz, Helmut Becker, Wen-Wai Yim, Noel Codella, Roberto Andres Novoa, Josep Malvehy, D. Dimitrov, Rocktim Jyoti Das, Zhuohan Xie, Ming Shan Hee, Preslav Nakov, Ivan Koychev, Steven A. Hicks, Sushant Gautam, Michael A. Riegler, Vajira Thambawita, Pål Halvorsen, Diandra Fabre, Cécile Macaire, Benjamin Lecouteux, Didier Schwab, Martin Potthast, Maximilian Heinrich, Johannes Kiesel, Moritz Wolter, Sharat Anand, and Benno Stein. 2025. "Overview of ImageCLEF 2025: Multimedia Retrieval in Medical, Social Media and Content Recommendation Applications." 16th International Conference of the CLEF Association (CLEF 2025), 2025-09-11.

Kiesel, Johannes, Çağrı Çöltekin, Marcel Gohsen, Sebastian Heineking, Maximilian Heinrich, Maik Fröbe, Tim Hagen, Mohammad Aliannejadi, Sharat Anand, Tomaž Erjavec, Matthias Hagen, Matyáš Kopp, Nikola Ljubešić, Katja Meden, Nailia Mirzakhmedova, Vaidas Morkevičius, Harrisen Scells, Moritz Wolter, Ines Zelch, Martin Potthast, and Benno Stein. 2025. "Overview of Touché 2025: Argumentation Systems." 16th International Conference of the CLEF Association (CLEF 2025), 2025-09-09.

Kiesel, Johannes, Çağrı Çöltekin, Marcel Gohsen, Sebastian Heineking, Maximilian Heinrich, Maik Fröbe, Tim Hagen, Mohammad Aliannejadi, Sharat Anand, Tomaž Erjavec, Matthias Hagen, Matyáš Kopp, Nikola Ljubešić, Katja Meden, Nailia Mirzakhmedova, Vaidas Morkevičius, Harrisen Scells, Moritz Wolter, Ines Zelch, Martin Potthast, and Benno Stein. 2025. "Overview of Touché 2025: Argumentation Systems." CLEF 2025 Conference and Labs of the Evaluation Forum, Universidad Nacional de Educación a Distancia, Madrid, 2025-09-09.

Zelch, Ines, Matthias Hagen, Benno Stein, and Johannes Kiesel. 2025. "Reproducing the Argument Quality Prediction of Project Debater." 12th Workshop on Argument Mining (ArgMining 2025), 2025-07-31.

Zelch, Ines, Matthias Hagen, Benno Stein, and Johannes Kiesel. 2025. "Segmentation of Argumentative Texts by Key Statements for Argument Mining from the Web." 12th Workshop on Argument Mining (ArgMining 2025), 2025-07-31.

Khan, Muhammad Taimoor, Johannes Kiesel, Dimitar Dimitrov, and Stefan Dietze. 2025. "Understanding Discourse-Topic Dependent Data Loss in Social Media Archives." 2nd MethodsNET Conference, Université catholique de Louvain, 2025-09-11.

Kanadan, Midhun, Johannes Kiesel, Maximilian Heinrich, and Benno Stein. 2025. "Webis at CQs-Gen 2025: Prompting and Reranking for Critical Questions." 12th Workshop on Argument Mining (ArgMining 2025), 2025-07-31.

Presentation not at a conference

Kiesel, Johannes. 2025. "Connecting Claims, Images, and Facts." Graduate Seminar: Artificial Intelligence and Natural Language Processing, Leibniz Universität Hannover, 2025-07-15.

Kiesel, Johannes, Marcel Gohsen, Nailia Mirzakhmedova, Matthias Hagen, and Benno Stein. 2025. "User Simulation for Generative IR Systems: GenIRSim." Dagstuhl Seminar 25391: Retrieval-Augmented Generation—The Future of Search?, Schloss Dagstuhl – Leibniz Center for Informatics, Munich, 2025-09-23.

Event

Kiesel, Johannes, Çağrı Çöltekin, Marcel Gohsen, Sebastian Heineking, Maximilian Heinrich, Maik Fröbe, Tim Hagen, Martin Potthast, and Benno Stein. 2025. "Touché: Argumentation Systems." CLEF 2025 Conference and Labs of the Evaluation Forum, Universidad Nacional de Educación a Distancia, Madrid, 2025-09-09 - 2025-09-10.