2023

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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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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

2022

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Using Keyqueries to Reduce Misinformation in Health-Related Search Results
Maik Fröbe | Sebastian Günther | Alexander Bondarenko | Johannes Huck | Matthias Hagen
Proceedings of the 2nd Workshop Reducing Online Misinformation through Credible Information Retrieval 2022 co-located with The 44th European Conference on Information Retrieval (ECIR 2022), Stavanger, Norway, April 10, 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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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

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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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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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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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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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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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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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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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Advances in Information Retrieval - 44th European Conference on IR Research, ECIR 2022, Stavanger, Norway, April 10-14, 2022, Proceedings, Part I

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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Advances in Information Retrieval - 44th European Conference on IR Research, ECIR 2022, Stavanger, Norway, April 10-14, 2022, Proceedings, Part II

Advances in Information Retrieval - 44th European Conference on IR Research, ECIR 2022, Stavanger, Norway, April 10-14, 2022, Proceedings, Part II

2021

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The information retrieval anthology 2021: inaugural status report and challenges ahead
Martin Potthast | Benno Stein | Matthias Hagen
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
2021 Volume 72 Issue 7

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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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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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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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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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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

2020

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The dilemma of the direct answer
Martin Potthast | Matthias Hagen | Benno Stein
2020 Volume 54 Issue 1

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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
2020 Volume 54 Issue 1

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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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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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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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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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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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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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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

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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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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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The Effect of Content-Equivalent Near-Duplicates on the Evaluation of Search Engines
Maik Fröbe | Jan Philipp Bittner | Martin Potthast | Matthias Hagen
Advances in Information Retrieval - 42nd European Conference on IR Research, ECIR 2020, Lisbon, Portugal, April 14-17, 2020, Proceedings, Part II

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
2019 Volume 56 Issue 3

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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

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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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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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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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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

2018

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Cross-Reading News
Shahbaz Syed | Tim Gollub | Marcel Gohsen | Nikolay Kolyada | Benno Stein | Matthias Hagen
Proceedings of the Second International Workshop on Recent Trends in News Information Retrieval co-located with 40th European Conference on Information Retrieval (ECIR 2018), Grenoble, France, March 26, 2018

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A Plan for Ancillary Copyright: Original Snippets
Martin Potthast | Wei-Fan Chen | Matthias Hagen | Benno Stein
Proceedings of the Second International Workshop on Recent Trends in News Information Retrieval co-located with 40th European Conference on Information Retrieval (ECIR 2018), Grenoble, France, March 26, 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

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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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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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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

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

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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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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

2016

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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

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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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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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Axiomatic Result Re-Ranking
Matthias Hagen | Michael Völske | Steve Göring | 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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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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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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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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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

2015

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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

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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

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

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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

2013

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Towards Optimum Query Segmentation: In Doubt Without
Matthias Hagen | Martin Potthast | Anna Beyer | Benno Stein
Proceedings of the 13th Dutch-Belgian Workshop on Information Retrieval, Delft, The Netherlands, April 26th, 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

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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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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

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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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

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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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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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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

2011

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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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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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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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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

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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

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

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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