Matthias Hagen

2026

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Overview of Touché 2026: Argumentation Systems - Extended Abstract.
Johannes Kiesel|Marc Feger|Tim Hagen|Sebastian Heineking|Maximilian Heinrich|Maik Fröbe|Katarina Boland|Wilhelm Pertsch|Julia Romberg|Ines Zelch|Stefan Dietze|Matthias Hagen|Martin Potthast|Benno Stein
Advances in Information Retrieval - 48th European Conference on Information Retrieval, ECIR 2026, Delft, The Netherlands, March 29 - April 2, 2026, Proceedings, Part IV

2025

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Overview of Touché 2025: Argumentation Systems.
Johannes Kiesel|Çagri Çöltekin|Marcel Gohsen|Sebastian Heineking|Maximilian Heinrich|Maik Fröbe|Tim Hagen|Mohammad Aliannejadi|Sharat Anand|Tomaz Erjavec|Matthias Hagen|Matyás Kopp|Nikola Ljubesic|Katja Meden|Nailia Mirzakhmedova|Vaidas Morkevicius|Harrisen Scells|Moritz Wolter|Ines Zelch|Martin Potthast|Benno Stein
Experimental IR Meets Multilinguality, Multimodality, and Interaction - 16th International Conference of the CLEF Association, CLEF 2025, Madrid, Spain, September 9-12, 2025, Proceedings
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Team OpenWebSearch at LongEval: Using Historical Data for Scientific Search.
Daria Alexander|Maik Fröbe|Gijs Hendriksen|Matthias Hagen|Djoerd Hiemstra|Martin Potthast|Arjen P. de Vries
Working Notes of the Conference and Labs of the Evaluation Forum, CLEF 2025, Madrid, Spain, 9-12 September 2025.
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Overview of Touché 2025: Argumentation Systems.
Johannes Kiesel|Çagri Çöltekin|Marcel Gohsen|Sebastian Heineking|Maximilian Heinrich|Maik Fröbe|Tim Hagen|Mohammad Aliannejadi|Sharat Anand|Tomaz Erjavec|Matthias Hagen|Matyás Kopp|Nikola Ljubesic|Katja Meden|Nailia Mirzakhmedova|Vaidas Morkevicius|Harrisen Scells|Moritz Wolter|Ines Zelch|Martin Potthast|Benno Stein
Working Notes of the Conference and Labs of the Evaluation Forum, CLEF 2025, Madrid, Spain, 9-12 September 2025.
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Corpus Subsampling: Estimating the Effectiveness of Neural Retrieval Models on Large Corpora.
Maik Fröbe|Andrew Parry|Harrisen Scells|Shuai Wang|Shengyao Zhuang|Guido Zuccon|Martin Potthast|Matthias Hagen
Advances in Information Retrieval - 47th European Conference on Information Retrieval, ECIR 2025, Lucca, Italy, April 6-10, 2025, Proceedings, Part I
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Set-Encoder: Permutation-Invariant Inter-passage Attention for Listwise Passage Re-ranking with Cross-Encoders.
Ferdinand Schlatt|Maik Fröbe|Harrisen Scells|Shengyao Zhuang|Bevan Koopman|Guido Zuccon|Benno Stein|Martin Potthast|Matthias Hagen
Advances in Information Retrieval - 47th European Conference on Information Retrieval, ECIR 2025, Lucca, Italy, April 6-10, 2025, Proceedings, Part II
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Counterfactual Query Rewriting to Use Historical Relevance Feedback.
Jüri Keller|Maik Fröbe|Gijs Hendriksen|Daria Alexander|Martin Potthast|Matthias Hagen|Philipp Schaer
Advances in Information Retrieval - 47th European Conference on Information Retrieval, ECIR 2025, Lucca, Italy, April 6-10, 2025, Proceedings, Part III
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Rank-DistiLLM: Closing the Effectiveness Gap Between Cross-Encoders and LLMs for Passage Re-ranking.
Ferdinand Schlatt|Maik Fröbe|Harrisen Scells|Shengyao Zhuang|Bevan Koopman|Guido Zuccon|Benno Stein|Martin Potthast|Matthias Hagen
Advances in Information Retrieval - 47th European Conference on Information Retrieval, ECIR 2025, Lucca, Italy, April 6-10, 2025, Proceedings, Part III
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How Child-Friendly is Web Search? An Evaluation of Relevance vs. Harm.
Maik Fröbe|Sophie Charlotte Bartholly|Matthias Hagen
Advances in Information Retrieval - 47th European Conference on Information Retrieval, ECIR 2025, Lucca, Italy, April 6-10, 2025, Proceedings, Part IV
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Overview of Touché 2025: Argumentation Systems - Extended Abstract.
Johannes Kiesel|Çagri Çöltekin|Marcel Gohsen|Sebastian Heineking|Maximilian Heinrich|Maik Fröbe|Tim Hagen|Mohammad Aliannejadi|Tomaz Erjavec|Matthias Hagen|Matyás Kopp|Nikola Ljubesic|Katja Meden|Nailia Mirzakhmedova|Vaidas Morkevicius|Harrisen Scells|Ines Zelch|Martin Potthast|Benno Stein
Advances in Information Retrieval - 47th European Conference on Information Retrieval, ECIR 2025, Lucca, Italy, April 6-10, 2025, Proceedings, Part V
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Web-Scale Retrieval Experimentation with chatnoir-pyterrier.
Jan Heinrich Merker|Janek Bevendorff|Maik Fröbe|Tim Hagen|Harrisen Scells|Matti Wiegmann|Benno Stein|Matthias Hagen|Martin Potthast
Advances in Information Retrieval - 47th European Conference on Information Retrieval, ECIR 2025, Lucca, Italy, April 6-10, 2025, Proceedings, Part V
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Axioms for Retrieval-Augmented Generation.
Jan Heinrich Merker|Maik Fröbe|Benno Stein|Martin Potthast|Matthias Hagen
Proceedings of the 2025 International ACM SIGIR Conference on Innovative Concepts and Theories in Information Retrieval, ICTIR 2025, Padua, Italy, 18 July 2025
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Large Language Model Relevance Assessors Agree With One Another More Than With Human Assessors.
Maik Fröbe|Andrew Parry|Ferdinand Schlatt|Sean MacAvaney|Benno Stein|Martin Potthast|Matthias Hagen
Proceedings of the 48th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2025, Padua, Italy, July 13-18, 2025
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The Viability of Crowdsourcing for RAG Evaluation.
Lukas Gienapp|Tim Hagen|Maik Fröbe|Matthias Hagen|Benno Stein|Martin Potthast|Harrisen Scells
Proceedings of the 48th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2025, Padua, Italy, July 13-18, 2025
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TIREx Tracker: The Information Retrieval Experiment Tracker.
Tim Hagen|Maik Fröbe|Jan Heinrich Merker|Harrisen Scells|Matthias Hagen|Martin Potthast
Proceedings of the 48th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2025, Padua, Italy, July 13-18, 2025
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Axiomatic Re-Ranking for Argument Retrieval.
Maximilian Heinrich|Marvin Vogel|Alexander Bondarenko|Matthias Hagen|Benno Stein
Proceedings of the 48th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2025, Padua, Italy, July 13-18, 2025
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TITE: Token-Independent Text Encoder for Information Retrieval.
Ferdinand Schlatt|Tim Hagen|Martin Potthast|Matthias Hagen
Proceedings of the 48th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2025, Padua, Italy, July 13-18, 2025
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Lightning IR: Straightforward Fine-tuning and Inference of Transformer-based Language Models for Information Retrieval.
Ferdinand Schlatt|Maik Fröbe|Matthias Hagen
Proceedings of the Eighteenth ACM International Conference on Web Search and Data Mining, WSDM 2025, Hannover, Germany, March 10-14, 2025

2024

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A User Study on the Acceptance of Native Advertising in Generative IR.
Ines Zelch|Matthias Hagen|Martin Potthast
Proceedings of the 2024 ACM SIGIR Conference on Human Information Interaction and Retrieval, CHIIR 2024, Sheffield, United Kingdom, March 10-14, 2024
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Who Will Evaluate the Evaluators? Exploring the Gen-IR User Simulation Space.
Johannes Kiesel|Marcel Gohsen|Nailia Mirzakhmedova|Matthias Hagen|Benno Stein
Experimental IR Meets Multilinguality, Multimodality, and Interaction - 15th International Conference of the CLEF Association, CLEF 2024, Grenoble, France, September 9-12, 2024, Proceedings, Part I
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Team OpenWebSearch at CLEF 2024: LongEval.
Daria Alexander|Maik Fröbe|Gijs Hendriksen|Ferdinand Schlatt|Matthias Hagen|Djoerd Hiemstra|Martin Potthast|Arjen P. de Vries
Working Notes of the Conference and Labs of the Evaluation Forum (CLEF 2024), Grenoble, France, 9-12 September, 2024.
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Team OpenWebSearch at CLEF 2024: QuantumCLEF.
Maik Fröbe|Daria Alexander|Gijs Hendriksen|Ferdinand Schlatt|Matthias Hagen|Martin Potthast
Working Notes of the Conference and Labs of the Evaluation Forum (CLEF 2024), Grenoble, France, 9-12 September, 2024.
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MiBi at BioASQ 2024: Retrieval-Augmented Generation for Answering Biomedical Questions.
Jan Heinrich Merker|Alexander Bondarenko|Matthias Hagen|Adrian Viehweger
Working Notes of the Conference and Labs of the Evaluation Forum (CLEF 2024), Grenoble, France, 9-12 September, 2024.
doi dblp
Investigating the Effects of Sparse Attention on Cross-Encoders.
Ferdinand Schlatt|Maik Fröbe|Matthias Hagen
Advances in Information Retrieval - 46th European Conference on Information Retrieval, ECIR 2024, Glasgow, UK, March 24-28, 2024, Proceedings, Part I
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Simulating Follow-Up Questions in Conversational Search.
Johannes Kiesel|Marcel Gohsen|Nailia Mirzakhmedova|Matthias Hagen|Benno Stein
Advances in Information Retrieval - 46th European Conference on Information Retrieval, ECIR 2024, Glasgow, UK, March 24-28, 2024, Proceedings, Part II
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Analyzing Adversarial Attacks on Sequence-to-Sequence Relevance Models.
Andrew Parry|Maik Fröbe|Sean MacAvaney|Martin Potthast|Matthias Hagen
Advances in Information Retrieval - 46th European Conference on Information Retrieval, ECIR 2024, Glasgow, UK, March 24-28, 2024, Proceedings, Part II
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The Open Web Index - Crawling and Indexing the Web for Public Use.
Gijs Hendriksen|Michael Dinzinger|Sheikh Mastura Farzana|Noor Afshan Fathima|Maik Fröbe|Sebastian Schmidt|Saber Zerhoudi|Michael Granitzer|Matthias Hagen|Djoerd Hiemstra|Martin Potthast|Benno Stein
Advances in Information Retrieval - 46th European Conference on Information Retrieval, ECIR 2024, Glasgow, UK, March 24-28, 2024, Proceedings, Part V
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Resources for Combining Teaching and Research in Information Retrieval Coursework.
Maik Fröbe|Harrisen Scells|Theresa Elstner|Christopher Akiki|Lukas Gienapp|Jan Heinrich Reimer|Sean MacAvaney|Benno Stein|Matthias Hagen|Martin Potthast
Proceedings of the 47th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2024, Washington DC, USA, July 14-18, 2024
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Evaluating Generative Ad Hoc Information Retrieval.
Lukas Gienapp|Harrisen Scells|Niklas Deckers|Janek Bevendorff|Shuai Wang|Johannes Kiesel|Shahbaz Syed|Maik Fröbe|Guido Zuccon|Benno Stein|Matthias Hagen|Martin Potthast
Proceedings of the 47th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2024, Washington DC, USA, July 14-18, 2024
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Systematic Evaluation of Neural Retrieval Models on the Touché 2020 Argument Retrieval Subset of BEIR.
Nandan Thakur|Luiz Bonifacio|Maik Fröbe|Alexander Bondarenko|Ehsan Kamalloo|Martin Potthast|Matthias Hagen|Jimmy Lin
Proceedings of the 47th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2024, Washington DC, USA, July 14-18, 2024
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Webis at TREC 2024: Biomedical Generative Retrieval, Retrieval-Augmented Generation, and Tip-of-the-Tongue Tracks.
Maik Fröbe|Lukas Gienapp|Harrisen Scells|Eric Oliver Schmidt|Matti Wiegmann|Martin Potthast|Matthias Hagen
Proceedings of the Thirty-Third Text REtrieval Conference, TREC 2024, Gaithersburg, MD, USA, November 18-22, 2024
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Detecting Generated Native Ads in Conversational Search.
Sebastian Schmidt|Ines Zelch|Janek Bevendorff|Benno Stein|Matthias Hagen|Martin Potthast
Companion Proceedings of the ACM on Web Conference 2024, WWW 2024, Singapore, Singapore, May 13-17, 2024

2023

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Report on the Dagstuhl Seminar on Frontiers of Information Access Experimentation for Research and Education.
Christine Bauer|Ben Carterette|Nicola Ferro|Norbert Fuhr|Joeran Beel|Timo Breuer|Charles L. A. Clarke|Anita Crescenzi|Gianluca Demartini|Giorgio Maria Di Nunzio|Laura Dietz|Guglielmo Faggioli|Bruce Ferwerda|Maik Fröbe|Matthias Hagen|Allan Hanbury|Claudia Hauff|Dietmar Jannach|Noriko Kando|Evangelos Kanoulas|Bart P. Knijnenburg|Udo Kruschwitz|Meijie Li|Maria Maistro|Lien Michiels|Andrea Papenmeier|Martin Potthast|Paolo Rosso|Alan Said|Philipp Schaer|Christin Seifert|Damiano Spina|Benno Stein|Nava Tintarev|Julián Urbano|Henning Wachsmuth|Martijn C. Willemsen|Justin Zobel
SIGIR Forum 2023 Volume 57 Issue 1
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Overview of Touché 2023: Argument and Causal Retrieval.
Alexander Bondarenko|Maik Fröbe|Johannes Kiesel|Ferdinand Schlatt|Valentin Barrière|Brian Ravenet|Léo Hemamou|Simon Luck|Jan Heinrich Reimer|Benno Stein|Martin Potthast|Matthias Hagen
Experimental IR Meets Multilinguality, Multimodality, and Interaction - 14th International Conference of the CLEF Association, CLEF 2023, Thessaloniki, Greece, September 18-21, 2023, Proceedings
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Overview of Touché 2023: Argument and Causal Retrieval.
Alexander Bondarenko|Maik Fröbe|Johannes Kiesel|Ferdinand Schlatt|Valentin Barrière|Brian Ravenet|Léo Hemamou|Simon Luck|Jan Heinrich Reimer|Benno Stein|Martin Potthast|Matthias Hagen
Working Notes of the Conference and Labs of the Evaluation Forum (CLEF 2023), Thessaloniki, Greece, September 18th to 21st, 2023.
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Bootstrapped nDCG Estimation in the Presence of Unjudged Documents.
Maik Fröbe|Lukas Gienapp|Martin Potthast|Matthias Hagen
Advances in Information Retrieval - 45th European Conference on Information Retrieval, ECIR 2023, Dublin, Ireland, April 2-6, 2023, Proceedings, Part I
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Overview of Touché 2023: Argument and Causal Retrieval - Extended Abstract.
Alexander Bondarenko|Maik Fröbe|Johannes Kiesel|Ferdinand Schlatt|Valentin Barrière|Brian Ravenet|Léo Hemamou|Simon Luck|Jan Heinrich Reimer|Benno Stein|Martin Potthast|Matthias Hagen
Advances in Information Retrieval - 45th European Conference on Information Retrieval, ECIR 2023, Dublin, Ireland, April 2-6, 2023, Proceedings, Part III
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Continuous Integration for Reproducible Shared Tasks with TIRA.io.
Maik Fröbe|Matti Wiegmann|Nikolay Kolyada|Bastian Grahm|Theresa Elstner|Frank Loebe|Matthias Hagen|Benno Stein|Martin Potthast
Advances in Information Retrieval - 45th European Conference on Information Retrieval, ECIR 2023, Dublin, Ireland, April 2-6, 2023, Proceedings, Part III
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Perspectives on Large Language Models for Relevance Judgment.
Guglielmo Faggioli|Laura Dietz|Charles L. A. Clarke|Gianluca Demartini|Matthias Hagen|Claudia Hauff|Noriko Kando|Evangelos Kanoulas|Martin Potthast|Benno Stein|Henning Wachsmuth
Proceedings of the 2023 ACM SIGIR International Conference on Theory of Information Retrieval, ICTIR 2023, Taipei, Taiwan, 23 July 2023
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The Information Retrieval Experiment Platform.
Maik Fröbe|Jan Heinrich Reimer|Sean MacAvaney|Niklas Deckers|Simon Reich|Janek Bevendorff|Benno Stein|Matthias Hagen|Martin Potthast
Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2023, Taipei, Taiwan, July 23-27, 2023
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The Archive Query Log: Mining Millions of Search Result Pages of Hundreds of Search Engines from 25 Years of Web Archives.
Jan Heinrich Reimer|Sebastian Schmidt|Maik Fröbe|Lukas Gienapp|Harrisen Scells|Benno Stein|Matthias Hagen|Martin Potthast
Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2023, Taipei, Taiwan, July 23-27, 2023
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Webis at TREC 2023: Tip-of-the-Tongue track.
Maik Fröbe|Christine Brychcy|Elisa Kluge|Eric Oliver Schmidt|Matthias Hagen
The Thirty-Second Text REtrieval Conference Proceedings (TREC 2023), Gaithersburg, MD, USA, November 14-17, 2023

2022

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Advances in Information Retrieval - 44th European Conference on IR Research, ECIR 2022, Stavanger, Norway, April 10-14, 2022, Proceedings, Part I
European Conference on Advances in Information Retrieval (ECIR) 2022
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Advances in Information Retrieval - 44th European Conference on IR Research, ECIR 2022, Stavanger, Norway, April 10-14, 2022, Proceedings, Part II
European Conference on Advances in Information Retrieval (ECIR) 2022
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A User Study on Clarifying Comparative Questions.
Alexander Bondarenko|Ekaterina Shirshakova|Matthias Hagen
CHIIR '22: ACM SIGIR Conference on Human Information Interaction and Retrieval, Regensburg, Germany, March 14 - 18, 2022
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The SimIIR 2.0 Framework: User Types, Markov Model-Based Interaction Simulation, and Advanced Query Generation.
Saber Zerhoudi|Sebastian Günther|Kim Plassmeier|Timo Borst|Christin Seifert|Matthias Hagen|Michael Granitzer
Proceedings of the 31st ACM International Conference on Information & Knowledge Management, Atlanta, GA, USA, October 17-21, 2022
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Overview of Touché 2022: Argument Retrieval.
Alexander Bondarenko|Maik Fröbe|Johannes Kiesel|Shahbaz Syed|Timon Gurcke|Meriem Beloucif|Alexander Panchenko|Chris Biemann|Benno Stein|Henning Wachsmuth|Martin Potthast|Matthias Hagen
Experimental IR Meets Multilinguality, Multimodality, and Interaction - 13th International Conference of the CLEF Association, CLEF 2022, Bologna, Italy, September 5-8, 2022, Proceedings
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Noise-Reduction for Automatically Transferred Relevance Judgments.
Maik Fröbe|Christopher Akiki|Martin Potthast|Matthias Hagen
Experimental IR Meets Multilinguality, Multimodality, and Interaction - 13th International Conference of the CLEF Association, CLEF 2022, Bologna, Italy, September 5-8, 2022, Proceedings
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Overview of Touché 2022: Argument Retrieval.
Alexander Bondarenko|Maik Fröbe|Johannes Kiesel|Shahbaz Syed|Timon Gurcke|Meriem Beloucif|Alexander Panchenko|Chris Biemann|Benno Stein|Henning Wachsmuth|Martin Potthast|Matthias Hagen
Proceedings of the Working Notes of CLEF 2022 - Conference and Labs of the Evaluation Forum, Bologna, Italy, September 5th - to - 8th, 2022.
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The Power of Anchor Text in the Neural Retrieval Era.
Maik Fröbe|Sebastian Günther|Maximilian Probst|Martin Potthast|Matthias Hagen
Advances in Information Retrieval - 44th European Conference on IR Research, ECIR 2022, Stavanger, Norway, April 10-14, 2022, Proceedings, Part I
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Overview of Touché 2022: Argument Retrieval - Extended Abstract.
Alexander Bondarenko|Maik Fröbe|Johannes Kiesel|Shahbaz Syed|Timon Gurcke|Meriem Beloucif|Alexander Panchenko|Chris Biemann|Benno Stein|Henning Wachsmuth|Martin Potthast|Matthias Hagen
Advances in Information Retrieval - 44th European Conference on IR Research, ECIR 2022, Stavanger, Norway, April 10-14, 2022, Proceedings, Part II
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City of Disguise: A Query Obfuscation Game on the ClueWeb.
Maik Fröbe|Nicola Lea Libera|Matthias Hagen
Advances in Information Retrieval - 44th European Conference on IR Research, ECIR 2022, Stavanger, Norway, April 10-14, 2022, Proceedings, Part II
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Sparse Pairwise Re-ranking with Pre-trained Transformers.
Lukas Gienapp|Maik Fröbe|Matthias Hagen|Martin Potthast
ICTIR '22: The 2022 ACM SIGIR International Conference on the Theory of Information Retrieval, Madrid, Spain, July 11 - 12, 2022
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Axiomatic Retrieval Experimentation with ir_axioms.
Alexander Bondarenko|Maik Fröbe|Jan Heinrich Reimer|Benno Stein|Michael Völske|Matthias Hagen
SIGIR '22: The 45th International ACM SIGIR Conference on Research and Development in Information Retrieval, Madrid, Spain, July 11 - 15, 2022
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How Train-Test Leakage Affects Zero-Shot Retrieval.
Maik Fröbe|Christopher Akiki|Martin Potthast|Matthias Hagen
String Processing and Information Retrieval - 29th International Symposium, SPIRE 2022, Concepción, Chile, November 8-10, 2022, Proceedings
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Webis at TREC 2022: Deep Learning and Health Misinformation.
Alexander Bondarenko|Maik Fröbe|Lukas Gienapp|Alexander Pugachev|Jan Heinrich Reimer|Ferdinand Schlatt|Ekaterina Artemova|Martin Potthast|Benno Stein|Pavel Braslavski|Matthias Hagen
Proceedings of the Thirty-First Text REtrieval Conference, TREC 2022, online, November 15-19, 2022
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Towards Understanding and Answering Comparative Questions.
Alexander Bondarenko|Yamen Ajjour|Valentin Dittmar|Niklas Homann|Pavel Braslavski|Matthias Hagen
WSDM '22: The Fifteenth ACM International Conference on Web Search and Data Mining, Virtual Event / Tempe, AZ, USA, February 21 - 25, 2022
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Query Interpretations from Entity-Linked Segmentations.
Vaibhav Kasturia|Marcel Gohsen|Matthias Hagen
WSDM '22: The Fifteenth ACM International Conference on Web Search and Data Mining, Virtual Event / Tempe, AZ, USA, February 21 - 25, 2022

2021

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The information retrieval anthology 2021: inaugural status report and challenges ahead.
Martin Potthast|Benno Stein|Matthias Hagen
SIGIR Forum 2021 Volume 55 Issue 1
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Predicting essay quality from search and writing behavior.
Pertti Vakkari|Michael Völske|Martin Potthast|Matthias Hagen|Benno Stein
Journal of the Association for Information Science and Technology (JASIST) 2021 Volume 72 Issue 7
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Misbeliefs and Biases in Health-Related Searches.
Alexander Bondarenko|Ekaterina Shirshakova|Marina Driker|Matthias Hagen|Pavel Braslavski
CIKM '21: The 30th ACM International Conference on Information and Knowledge Management, Virtual Event, Queensland, Australia, November 1 - 5, 2021
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Overview of Touché 2021: Argument Retrieval.
Alexander Bondarenko|Lukas Gienapp|Maik Fröbe|Meriem Beloucif|Yamen Ajjour|Alexander Panchenko|Chris Biemann|Benno Stein|Henning Wachsmuth|Martin Potthast|Matthias Hagen
Experimental IR Meets Multilinguality, Multimodality, and Interaction - 12th International Conference of the CLEF Association, CLEF 2021, Virtual Event, September 21-24, 2021, Proceedings
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Learning to Rank Arguments with Feature Selection.
Christopher Akiki|Maik Fröbe|Matthias Hagen|Martin Potthast
Proceedings of the Working Notes of CLEF 2021 - Conference and Labs of the Evaluation Forum, Bucharest, Romania, September 21st - to - 24th, 2021.
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Overview of Touché 2021: Argument Retrieval.
Alexander Bondarenko|Lukas Gienapp|Maik Fröbe|Meriem Beloucif|Yamen Ajjour|Alexander Panchenko|Chris Biemann|Benno Stein|Henning Wachsmuth|Martin Potthast|Matthias Hagen
Proceedings of the Working Notes of CLEF 2021 - Conference and Labs of the Evaluation Forum, Bucharest, Romania, September 21st - to - 24th, 2021.
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Toward Conversational Query Reformulation.
Johannes Kiesel|Xiaoni Cai|Roxanne El Baff|Benno Stein|Matthias Hagen
Proceedings of the Second International Conference on Design of Experimental Search & Information REtrieval Systems, Padova, Italy, September 15-18, 2021.
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Overview of Touché 2021: Argument Retrieval - Extended Abstract.
Alexander Bondarenko|Lukas Gienapp|Maik Fröbe|Meriem Beloucif|Yamen Ajjour|Alexander Panchenko|Chris Biemann|Benno Stein|Henning Wachsmuth|Martin Potthast|Matthias Hagen
Advances in Information Retrieval - 43rd European Conference on IR Research, ECIR 2021, Virtual Event, March 28 - April 1, 2021, Proceedings, Part II
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Towards Axiomatic Explanations for Neural Ranking Models.
Michael Völske|Alexander Bondarenko|Maik Fröbe|Benno Stein|Jaspreet Singh|Matthias Hagen|Avishek Anand
ICTIR '21: The 2021 ACM SIGIR International Conference on the Theory of Information Retrieval, Virtual Event, Canada, July 11, 2021
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Identifying Queries in Instant Search Logs.
Markus Fischer|Kristof Komlossy|Benno Stein|Martin Potthast|Matthias Hagen
SIGIR '21: The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval, Virtual Event, Canada, July 11-15, 2021
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CopyCat: Near-Duplicates Within and Between the ClueWeb and the Common Crawl.
Maik Fröbe|Janek Bevendorff|Lukas Gienapp|Michael Völske|Benno Stein|Martin Potthast|Matthias Hagen
SIGIR '21: The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval, Virtual Event, Canada, July 11-15, 2021
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The Information Retrieval Anthology.
Martin Potthast|Sebastian Günther|Janek Bevendorff|Jan Philipp Bittner|Alexander Bondarenko|Maik Fröbe|Christian Kahmann|Andreas Niekler|Michael Völske|Benno Stein|Matthias Hagen
SIGIR '21: The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval, Virtual Event, Canada, July 11-15, 2021
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Webis at TREC 2021: Deep Learning, Health Misinformation, and Podcasts Tracks.
Alexander Bondarenko|Maik Fröbe|Sebastian Günther|Matthias Hagen|Marcel Gohsen|Johannes Kiesel|Michael Völske|Benno Stein|Jakob Schwerter|Shahbaz Syed|Martin Potthast
Proceedings of the Thirtieth Text REtrieval Conference, TREC 2021, online, November 15-19, 2021

2020

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Dagstuhl seminar 19461 on conversational search: seminar goals and working group outcomes.
Avishek Anand|Lawrence Cavedon|Matthias Hagen|Hideo Joho|Mark Sanderson|Benno Stein
SIGIR Forum 2020 Volume 54 Issue 1
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The dilemma of the direct answer.
Martin Potthast|Matthias Hagen|Benno Stein
SIGIR Forum 2020 Volume 54 Issue 1
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Estimating Topic Difficulty Using Normalized Discounted Cumulated Gain.
Lukas Gienapp|Benno Stein|Matthias Hagen|Martin Potthast
CIKM '20: The 29th ACM International Conference on Information and Knowledge Management, Virtual Event, Ireland, October 19-23, 2020
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The Impact of Negative Relevance Judgments on NDCG.
Lukas Gienapp|Maik Fröbe|Matthias Hagen|Martin Potthast
CIKM '20: The 29th ACM International Conference on Information and Knowledge Management, Virtual Event, Ireland, October 19-23, 2020
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Overview of Touché 2020: Argument Retrieval - Extended Abstract.
Alexander Bondarenko|Maik Fröbe|Meriem Beloucif|Lukas Gienapp|Yamen Ajjour|Alexander Panchenko|Chris Biemann|Benno Stein|Henning Wachsmuth|Martin Potthast|Matthias Hagen
Experimental IR Meets Multilinguality, Multimodality, and Interaction - 11th International Conference of the CLEF Association, CLEF 2020, Thessaloniki, Greece, September 22-25, 2020, Proceedings
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Overview of Touché 2020: Argument Retrieval.
Alexander Bondarenko|Maik Fröbe|Meriem Beloucif|Lukas Gienapp|Yamen Ajjour|Alexander Panchenko|Chris Biemann|Benno Stein|Henning Wachsmuth|Martin Potthast|Matthias Hagen
Working Notes of CLEF 2020 - Conference and Labs of the Evaluation Forum, Thessaloniki, Greece, September 22-25, 2020.
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Touché: First Shared Task on Argument Retrieval.
Alexander Bondarenko|Matthias Hagen|Martin Potthast|Henning Wachsmuth|Meriem Beloucif|Chris Biemann|Alexander Panchenko|Benno Stein
Advances in Information Retrieval - 42nd European Conference on IR Research, ECIR 2020, Lisbon, Portugal, April 14-17, 2020, Proceedings, Part II
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The Effect of Content-Equivalent Near-Duplicates on the Evaluation of Search Engines.
Maria Gäde|Maik Fröbe|Mark Michael Hall|Jan Philipp Bittner|Martin Potthast|Hugo C. Huurdeman|Matthias Hagen|Jaap Kamps
Advances in Information Retrieval - 42nd European Conference on IR Research, ECIR 2020, Lisbon, Portugal, April 14-17, 2020, Proceedings, Part II
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A Search Engine for Police Press Releases to Double-Check the News.
Maik Fröbe|Nina Schwanke|Matthias Hagen|Martin Potthast
Advances in Information Retrieval - 42nd European Conference on IR Research, ECIR 2020, Lisbon, Portugal, April 14-17, 2020, Proceedings, Part II
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Sampling Bias Due to Near-Duplicates in Learning to Rank.
Maik Fröbe|Janek Bevendorff|Jan Heinrich Reimer|Martin Potthast|Matthias Hagen
Proceedings of the 43rd International ACM SIGIR conference on research and development in Information Retrieval, SIGIR 2020, Virtual Event, China, July 25-30, 2020
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Webis at TREC 2020: Health Misinformation Track Extended Abstract.
Janek Bevendorff|Michael Völske|Benno Stein|Alexander Bondarenko|Maik Fröbe|Sebastian Günther|Matthias Hagen
Proceedings of the Twenty-Ninth Text REtrieval Conference, TREC 2020, Virtual Event [Gaithersburg, Maryland, USA], November 16-20, 2020.
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Comparative Web Search Questions.
Alexander Bondarenko|Pavel Braslavski|Michael Völske|Rami Aly|Maik Fröbe|Alexander Panchenko|Chris Biemann|Benno Stein|Matthias Hagen
WSDM '20: The Thirteenth ACM International Conference on Web Search and Data Mining, Houston, TX, USA, February 3-7, 2020
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Abstractive Snippet Generation.
Wei-Fan Chen|Shahbaz Syed|Benno Stein|Matthias Hagen|Martin Potthast
WWW '20: The Web Conference 2020, Taipei, Taiwan, April 20-24, 2020

2019

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Modeling the usefulness of search results as measured by information use.
Pertti Vakkari|Michael Völske|Martin Potthast|Matthias Hagen|Benno Stein
Information Processing and Management 2019 Volume 56 Issue 3
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Clarifying False Memories in Voice-based Search.
Johannes Kiesel|Arefeh Bahrami|Benno Stein|Avishek Anand|Matthias Hagen
Proceedings of the 2019 Conference on Human Information Interaction and Retrieval, CHIIR 2019, Glasgow, Scotland, UK, March 10-14, 2019
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Answering Comparative Questions: Better than Ten-Blue-Links?
Matthias Schildwächter|Alexander Bondarenko|Julian Zenker|Matthias Hagen|Chris Biemann|Alexander Panchenko
Proceedings of the 2019 Conference on Human Information Interaction and Retrieval, CHIIR 2019, Glasgow, Scotland, UK, March 10-14, 2019
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Wikipedia Text Reuse: Within and Without.
Milad Alshomary|Michael Völske|Tristan Licht|Henning Wachsmuth|Benno Stein|Matthias Hagen|Martin Potthast
Advances in Information Retrieval - 41st European Conference on IR Research, ECIR 2019, Cologne, Germany, April 14-18, 2019, Proceedings, Part I
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Argument Search: Assessing Argument Relevance.
Martin Potthast|Lukas Gienapp|Florian Euchner|Nick Heilenkötter|Nico Weidmann|Henning Wachsmuth|Benno Stein|Matthias Hagen
Proceedings of the 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2019, Paris, France, July 21-25, 2019.
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Query-Task Mapping.
Michael Völske|Ehsan Fatehifar|Benno Stein|Matthias Hagen
Proceedings of the 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2019, Paris, France, July 21-25, 2019.
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Webis at TREC 2019: Decision Track.
Alexander Bondarenko|Maik Fröbe|Vaibhav Kasturia|Matthias Hagen|Michael Völske|Benno Stein
Proceedings of the Twenty-Eighth Text REtrieval Conference, TREC 2019, Gaithersburg, Maryland, USA, November 13-15, 2019.

2018

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Overview of the Author Obfuscation Task at PAN 2018: A New Approach to Measuring Safety.
Martin Potthast|Felix Schremmer|Matthias Hagen|Benno Stein
Working Notes of CLEF 2018 - Conference and Labs of the Evaluation Forum, Avignon, France, September 10-14, 2018.
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WASP: Web Archiving and Search Personalized.
Johannes Kiesel|Arjen P. de Vries|Matthias Hagen|Benno Stein|Martin Potthast
Proceedings of the First Biennial Conference on Design of Experimental Search & Information Retrieval Systems, Bertinoro, Italy, August 28-31, 2018.
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Elastic ChatNoir: Search Engine for the ClueWeb and the Common Crawl.
Janek Bevendorff|Benno Stein|Matthias Hagen|Martin Potthast
Advances in Information Retrieval - 40th European Conference on IR Research, ECIR 2018, Grenoble, France, March 26-29, 2018, Proceedings
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A User Study on Snippet Generation: Text Reuse vs. Paraphrases.
Wei-Fan Chen|Matthias Hagen|Benno Stein|Martin Potthast
The 41st International ACM SIGIR Conference on Research & Development in Information Retrieval, SIGIR 2018, Ann Arbor, MI, USA, July 08-12, 2018
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Toward Voice Query Clarification.
Johannes Kiesel|Arefeh Bahrami|Benno Stein|Avishek Anand|Matthias Hagen
The 41st International ACM SIGIR Conference on Research & Development in Information Retrieval, SIGIR 2018, Ann Arbor, MI, USA, July 08-12, 2018
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Webis at TREC 2018: Common Core Track.
Alexander Bondarenko|Matthias Hagen|Michael Völske|Benno Stein|Alexander Panchenko|Chris Biemann
Proceedings of the Twenty-Seventh Text REtrieval Conference, TREC 2018, Gaithersburg, Maryland, USA, November 14-16, 2018

2017

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Source Retrieval for Web-Scale Text Reuse Detection.
Matthias Hagen|Martin Potthast|Payam Adineh|Ehsan Fatehifar|Benno Stein
Proceedings of the 2017 ACM on Conference on Information and Knowledge Management, CIKM 2017, Singapore, November 06 - 10, 2017
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Webis at the CLEF 2017 Dynamic Search Lab.
Matthias Hagen|Johannes Kiesel|Milad Alshomary|Benno Stein
Working Notes of CLEF 2017 - Conference and Labs of the Evaluation Forum, Dublin, Ireland, September 11-14, 2017.
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Overview of the Author Obfuscation Task at PAN 2017: Safety Evaluation Revisited.
Matthias Hagen|Martin Potthast|Benno Stein
Working Notes of CLEF 2017 - Conference and Labs of the Evaluation Forum, Dublin, Ireland, September 11-14, 2017.
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A Large-Scale Query Spelling Correction Corpus.
Matthias Hagen|Martin Potthast|Marcel Gohsen|Anja Rathgeber|Benno Stein
Proceedings of the 40th International ACM SIGIR Conference on Research and Development in Information Retrieval, Shinjuku, Tokyo, Japan, August 7-11, 2017
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Webis at TREC 2017: Open Search and Core Tracks.
Matthias Hagen|Yamen Ajjour|Johannes Kiesel|Payam Adineh|Benno Stein
Proceedings of The Twenty-Sixth Text REtrieval Conference, TREC 2017, Gaithersburg, Maryland, USA, November 15-17, 2017

2016

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Keyqueries for Clustering and Labeling.
Tim Gollub|Matthias Busse|Benno Stein|Matthias Hagen
Information Retrieval Technology - 12th Asia Information Retrieval Societies Conference, AIRS 2016, Beijing, China, November 30 - December 2, 2016, Proceedings
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Simulating Ideal and Average Users.
Matthias Hagen|Maximilian Michel|Benno Stein
Information Retrieval Technology - 12th Asia Information Retrieval Societies Conference, AIRS 2016, Beijing, China, November 30 - December 2, 2016, Proceedings
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How Writers Search: Analyzing the Search and Writing Logs of Non-fictional Essays.
Matthias Hagen|Martin Potthast|Michael Völske|Jakob Gomoll|Benno Stein
Proceedings of the 2016 ACM Conference on Human Information Interaction and Retrieval, CHIIR 2016, Carrboro, North Carolina, USA, March 13-17, 2016
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Axiomatic Result Re-Ranking.
Matthias Hagen|Christina Leber|Michael Völske|Michael Völske|Christina Leber|Benno Stein|Dan Yang|Steve Göring|Dan Yang|Benno Stein
Proceedings of the 25th ACM International Conference on Information and Knowledge Management, CIKM 2016, Indianapolis, IN, USA, October 24-28, 2016
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Author Obfuscation: Attacking the State of the Art in Authorship Verification.
Martin Potthast|Matthias Hagen|Benno Stein
Working Notes of CLEF 2016 - Conference and Labs of the Evaluation forum, Évora, Portugal, 5-8 September, 2016.
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Supporting Scholarly Search with Keyqueries.
Matthias Hagen|Anna Beyer|Tim Gollub|Kristof Komlossy|Benno Stein
Advances in Information Retrieval - 38th European Conference on IR Research, ECIR 2016, Padua, Italy, March 20-23, 2016. Proceedings
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Who Wrote the Web? Revisiting Influential Author Identification Research Applicable to Information Retrieval.
Martin Potthast|Sarah Braun|Tolga Buz|Fabian Duffhauss|Florian Friedrich|Jörg Marvin Gülzow|Jakob Köhler|Winfried Lötzsch|Fabian Müller|Maike Elisa Müller|Robert Paßmann|Bernhard Reinke|Lucas Rettenmeier|Thomas Rometsch|Timo Sommer|Michael Träger|Sebastian Wilhelm|Benno Stein|Efstathios Stamatatos|Matthias Hagen
Advances in Information Retrieval - 38th European Conference on IR Research, ECIR 2016, Padua, Italy, March 20-23, 2016. Proceedings
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Clickbait Detection.
Martin Potthast|Sebastian Köpsel|Benno Stein|Matthias Hagen
Advances in Information Retrieval - 38th European Conference on IR Research, ECIR 2016, Padua, Italy, March 20-23, 2016. Proceedings
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Webis at TREC 2016: Tasks, Total Recall, and Open Search Tracks.
Matthias Hagen|Johannes Kiesel|Payam Adineh|Masoud Alahyari|Ehsan Fatehifar|Arefeh Bahrami|Pia Fichtl|Benno Stein
Proceedings of The Twenty-Fifth Text REtrieval Conference, TREC 2016, Gaithersburg, Maryland, USA, November 15-18, 2016

2015

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What Users Ask a Search Engine: Analyzing One Billion Russian Question Queries.
Michael Völske|Pavel Braslavski|Matthias Hagen|Galina Lezina|Benno Stein
Proceedings of the 24th ACM International Conference on Information and Knowledge Management, CIKM 2015, Melbourne, VIC, Australia, October 19 - 23, 2015
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Source Retrieval for Plagiarism Detection from Large Web Corpora: Recent Approaches.
Matthias Hagen|Martin Potthast|Benno Stein
Working Notes of CLEF 2015 - Conference and Labs of the Evaluation forum, Toulouse, France, September 8-11, 2015.
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Twitter Sentiment Detection via Ensemble Classification Using Averaged Confidence Scores.
Matthias Hagen|Martin Potthast|Michel Büchner|Benno Stein
Advances in Information Retrieval - 37th European Conference on IR Research, ECIR 2015, Vienna, Austria, March 29 - April 2, 2015. Proceedings
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A Corpus of Realistic Known-Item Topics with Associated Web Pages in the ClueWeb09.
Matthias Hagen|Daniel Wägner|Benno Stein
Advances in Information Retrieval - 37th European Conference on IR Research, ECIR 2015, Vienna, Austria, March 29 - April 2, 2015. Proceedings
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Webis at TREC 2015: Tasks and Total Recall Tracks.
Matthias Hagen|Steve Göring|Magdalena Keil|Olaoluwa Anifowose|Amir Othman|Benno Stein
Proceedings of The Twenty-Fourth Text REtrieval Conference, TREC 2015, Gaithersburg, Maryland, USA, November 17-20, 2015

2014

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Supporting More-Like-This Information Needs: Finding Similar Web Content in Different Scenarios.
Matthias Hagen|Christiane Glimm
Information Access Evaluation. Multilinguality, Multimodality, and Interaction - 5th International Conference of the CLEF Initiative, CLEF 2014, Sheffield, UK, September 15-18, 2014. Proceedings
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Overview of the 6th International Competition on Plagiarism Detection.
Martin Potthast|Matthias Hagen|Anna Beyer|Matthias Busse|Martin Tippmann|Paolo Rosso|Benno Stein
Working Notes for CLEF 2014 Conference, Sheffield, UK, September 15-18, 2014.
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Webis at TREC 2014: Web, Session, and Contextual Suggestion Tracks.
Matthias Hagen|Steve Goering|Maximilian Michel|Georg Müller|Benno Stein
Proceedings of The Twenty-Third Text REtrieval Conference, TREC 2014, Gaithersburg, Maryland, USA, November 19-21, 2014

2013

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Overview of the 5th International Competition on Plagiarism Detection.
Martin Potthast|Matthias Hagen|Tim Gollub|Martin Tippmann|Johannes Kiesel|Paolo Rosso|Efstathios Stamatatos|Benno Stein
Working Notes for CLEF 2013 Conference , Valencia, Spain, September 23-26, 2013.
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From search session detection to search mission detection.
Matthias Hagen|Jakob Gomoll|Anna Beyer|Benno Stein
Open research Areas in Information Retrieval, OAIR 2013, Lisbon, Portugal, May 15-17, 2013
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From keywords to keyqueries: content descriptors for the web.
Tim Gollub|Matthias Hagen|Maximilian Michel|Benno Stein
The 36th International ACM SIGIR conference on research and development in Information Retrieval, SIGIR '13, Dublin, Ireland - July 28 - August 01, 2013
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Webis at TREC 2013-Session and Web Track.
Matthias Hagen|Michael Völske|Jakob Gomoll|Marie Bornemann|Lene Ganschow|Florian Kneist|Abdul Hamid Sabri|Benno Stein
Proceedings of The Twenty-Second Text REtrieval Conference, TREC 2013, Gaithersburg, Maryland, USA, November 19-22, 2013

2012

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Towards optimum query segmentation: in doubt without.
Matthias Hagen|Martin Potthast|Anna Beyer|Benno Stein
21st ACM International Conference on Information and Knowledge Management, CIKM'12, Maui, HI, USA, October 29 - November 02, 2012
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Overview of the 4th International Competition on Plagiarism Detection.
Martin Potthast|Tim Gollub|Matthias Hagen|Johannes Kiesel|Maximilian Michel|Arnd Oberländer|Martin Tippmann|Alberto Barrón-Cedeño|Parth Gupta|Paolo Rosso|Benno Stein
CLEF 2012 Evaluation Labs and Workshop, Online Working Notes, Rome, Italy, September 17-20, 2012
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Towards realistic known-item topics for the ClueWeb.
Claudia Hauff|Matthias Hagen|Anna Beyer|Benno Stein
Information Interaction in Context: 2012, IIix'12, Nijmegen, The Netherlands, August 21-24, 2012
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ChatNoir: a search engine for the ClueWeb09 corpus.
Martin Potthast|Matthias Hagen|Benno Stein|Jan Graßegger|Maximilian Michel|Martin Tippmann|Clement Welsch
The 35th International ACM SIGIR conference on research and development in Information Retrieval, SIGIR '12, Portland, OR, USA, August 12-16, 2012
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Webis at the TREC 2012 Session Track.
Matthias Hagen|Martin Potthast|Matthias Busse|Jakob Gomoll|Jannis Harder|Benno Stein
Proceedings of The Twenty-First Text REtrieval Conference, TREC 2012, Gaithersburg, Maryland, USA, November 6-9, 2012

2011

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Query session detection as a cascade.
Matthias Hagen|Benno Stein|Tino Rüb
Proceedings of the 20th ACM Conference on Information and Knowledge Management, CIKM 2011, Glasgow, United Kingdom, October 24-28, 2011
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Introducing the User-over-Ranking Hypothesis.
Benno Stein|Matthias Hagen
Advances in Information Retrieval - 33rd European Conference on IR Research, ECIR 2011, Dublin, Ireland, April 18-21, 2011. Proceedings
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Applying the User-over-Ranking Hypothesis to Query Formulation.
Matthias Hagen|Benno Stein
Advances in Information Retrieval Theory - Third International Conference, ICTIR 2011, Bertinoro, Italy, September 12-14, 2011. Proceedings
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Candidate Document Retrieval for Web-Scale Text Reuse Detection.
Matthias Hagen|Benno Stein
String Processing and Information Retrieval, 18th International Symposium, SPIRE 2011, Pisa, Italy, October 17-21, 2011. Proceedings
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Webis at the TREC 2011 Session Track.
Matthias Hagen|Jan Graßegger|Maximilian Michel|Benno Stein
Proceedings of The Twentieth Text REtrieval Conference, TREC 2011, Gaithersburg, Maryland, USA, November 15-18, 2011
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Query segmentation revisited.
Matthias Hagen|Martin Potthast|Benno Stein|Christof Bräutigam
Proceedings of the 20th International Conference on World Wide Web, WWW 2011, Hyderabad, India, March 28 - April 1, 2011

2010

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The power of naive query segmentation.
Matthias Hagen|Martin Potthast|Benno Stein|Christof Bräutigam
Proceeding of the 33rd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2010, Geneva, Switzerland, July 19-23, 2010
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Webis at the TREC 2010 Sessions Track.
Matthias Hagen|Benno Stein|Michael Völske
Proceedings of The Nineteenth Text REtrieval Conference, TREC 2010, Gaithersburg, Maryland, USA, November 16-19, 2010