Excellent results are based on solid science and innovation. That’s why members of the ows.eu community are constantly conducting cutting-edge research and attending scientific conferences around the world. Here are some of the results.

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Research Publications

Publications 2025

Emma J. Gerritse¹, Faegheh Hasibi¹, Arjen P. de Vries¹
Embeddings to Empower Entity Retrieval
In: Information Retrieval Research, June 2025
Link to publication
¹Radboud University Nijmegen

Proceedings

Sebastian Gürtl¹, Alexander Nussbaumer¹, Christian Gütl¹
Supporting Vertical Web Search and Customized Search Applications with the Modular and Open Framework MOSAIC
In: Proceedings of the 2nd International Workshop on Open Web Search Co-located With the 47th European Conference on Information Retrieval (ECIR 2025), December 2025
Link to publication
¹Graz University of Technology

Zerhoudi Saber¹, Granitzer Michael¹
UXSim: Towards a Hybrid User Search Simulation
In: Proceedings of the 34th ACM International Conference on Information and Knowledge Management (CIKM ’25), November 2025
Link to publication
¹University of Passau

Laura Caspari¹, Michael Dinzinger¹, Michael Granitzer¹, Jelena Mitrovic¹
Extracting and Utilizing Structured Data from the Open Web Index
In: 7th International Open Search Symposium (OSSYM2025), October 2026
Link to publication
¹University of Passau

Noor A. Fathima¹, Michael Dinzinger², Michael Granitzer², Andreas Wagner¹
Architecting the Datastore for the URL Frontier of OpenWebSearch.eu
In: 7th International Open Search Symposium (OSSYM2025), October 2025
Link to publication
¹CERN Geneva, ²University of Passau

Jason Theodoropoulos¹, & Joonas Kesäniemi¹
Using The Open Web Index To Create New Search Applications For Research.fi
In: 7th International Open Search Symposium (OSSYM2025), October 2025
Link to publication
¹CSC – IT Center for Science

Elias Sandner^{1, 2}, Daniel Scharf², Thomas Wautischar², Igor Jakovljevic1, Alice Simniceanu³, Luca Fontana³, Andre Henriques¹, Andreas Wagner¹, Christian Gütl²
Assessing the Reliability of Human and LLM-Based Screening in Systematic Reviews: A Study on First-Time Reviewers
In: 7th International Open Search Symposium (OSSYM2025), October 2025
Link to publication
¹CERN Geneva, ²Graz University of Technology, ³WHO Geneva

Dmytro Zhuk¹, Elias Sandner^2,3, Igor Jakovljevic², Alice Simniceanu³, Luca Fontana³, Andre Henriques², Andreas Wagner², Christian Gütl⁴
Automating License-Aware Full-Text Retrieval for Systematic Reviews: An End-To-End Scalable System to Reduce Reviewer Workload
In: 7th International Open Search Symposium (OSSYM2025), October 2026
Link to publication
¹University of Vienna, ²CERN Geneva, ³WHO Geneva, ⁴Graz University of Technology

Christine Plote¹, Alexander Nussbaumer²
A Charter For Public Interest Internet Search
In: 7th International Open Search Symposium (OSSYM2025), October 2025
Link to publication
¹Open Seatch Foundation e.V. Starnberg, ²Technical University Graz

Saber Zerhoudi¹, Michael Granitzer¹
In-Browser Agentic Web: a Decentralized Approach to Information Access
In: 7th International Open Search Symposium (OSSYM2025), October 2025
Link to publication
¹University of Passau

Felix Holz¹, Daniel Scharf¹, Alexander Nussbaumer¹, Sebastian Gürtl¹
Adding Retrieval Augmented Generation to the MOSAIC Framework
In: 7th International Open Search Symposium (OSSYM2025), October 2025
Link to publication
¹Graz University of Technology

Gijs Hendriksen¹, Djoerd Hiemstra¹, Arjen P. de Vries¹
Efficient Session Search using Topical Index Shards
In: 7th International Open Search Symposium (OSSYM2025), October 2025
Link to publication
¹Radbound University Nijmegen

Kateřina Slaninová¹, Pavlína Smolková¹
Large-Scale Graph Visualisation of Open Web Index and its Evolution in Time
In: 7th International Open Search Symposium (OSSYM2025), October 2025
Link to publication
¹IT4Innocationa, VBS – Technical University of Ostrava

Lukas Gienapp¹, Christopher Schröder^3,4, Stefan Schweter⁵, Christopher Akiki^4,6, Ferdinand Schlatt⁷, Arden Zimmermann⁸, Phillipe Genêt⁹ and Martin Potthast¹
The German Commons – 154 Billion Tokens of Openly Licensed Text for German Language Models
In: CoRR, October 2025
Link to publication
¹University of Kassel; hessian.AI, ScaDS.AI Kassel, ³InfAI, ⁴ScaDS.AI Leipzig, ⁵Independent Researcher Holzkirchen, ⁶Leipzig University, ⁷Friedrich-Schiller University Jena, ⁸German National Library Leipzig, ⁹German National Library Frankfurt

Daria Alexander¹1, Maik Fröbe², Gijs Hendriksen¹, Matthias Hagen², Djoerd Hiemstra¹, Martin Potthast³, Arjen P. de Vries¹
Team OpenWebSearch at LongEval: Using Historical Data for Scientific Search Working notes
In: CLEF 2025, September 2025
Link to publication
¹Radbound University Nijmegen, ²Friedrich-Schiller-University Jena, ³University of Kassel; hessian.AI, ScaDS.AI

Janek Bevendorff1,2, Yuxia Wang³, Jussi Karlgren⁴, Matti Wiegmann^2,5, Maik Fröbe⁶, Akim Tsivgun⁷, Jinyan Su⁸, Zhuohan Xie³, Mervat Abassy⁹, Jonibek Mansurov³, Rui Xing^3,10, Minh Ngoc Ta¹¹, Kareem Ashraf Elozeiri¹², Tianle Gu¹³, Raj Vardhan Tomar¹⁴, Jiahui Geng³, Ekaterina Artemova¹⁵, Artem Shelmanov³, Nizar Habash¹⁶, Efstathios Stamatatos¹⁷, Iryna Gurevych^3,18, Preslav Nakov³, Martin Potthast^5,19,Benno Stein²
Overview of the “Voight-Kampff” Generative AI Authorship Verification Task at PAN and ELOQUENT 2025 Working notes
In: CLEF 2025, September 2025
Link to publication
¹Leipzig University, ²Bauhaus-University Weimar, ³Mohamed bin Zayed University of Artificial Intelligence, ⁴University of Helsinki, ⁵University of Kassel, ⁶Friedrich-Schiller-University Jena, ⁷Nebius AI; KU Leuven, ⁸Cornell University, ⁹Alexandria University, ¹⁰The University of Melbourne, ¹¹BKAI Research Center – Hanoi University of Science and Technology, ¹²Zewail Citiy of Science and Technology, ¹³Tsinghua University, ¹⁴Cluster Innovation Center – University of Delhi, ¹⁵Toloka AI, ¹⁶New York University Abu Dhabi, ¹⁷University of the Aegean, ¹⁸TU Darmstadt, ¹⁹hessian.AI; ScaDS.Ai

Johannes Kiesel¹, Çağrı Çöltekin², Marcel Gohsen³, Sebastian Heineking⁴, Maximilian Heinrich³, Maik Fröbe⁵, Tim Hagen^6,7, Mohammad Aliannejadi⁸, Sharat Anand³, Tomaž Erjavec⁹, Matthias Hagen⁵, Matyáš Kopp¹⁰, Nikola Ljubešić⁹, Katja Meden⁹, Nailia Mirzakhmedova³, Vaidas Morkevičius¹¹, Harrisen Scells², Moritz Wolter⁴, Ines Zelch^4,5, Martin Potthast^6,7,12, Benno Stein³
Overview of Touché 2025: Argumentation Systems
In: CLEF 2025, September 2025
Link to publiaction
¹GESIS – Leibniz Institute for Social Sciences, ²University of Tübingen, ³Bauhaus-University Weimar, ⁴Leipzig University, ⁵Friedrich-Schiler-University Jena, ⁶University of Kassel, ⁷hessian.AI, ⁸University of Amsterdam, ⁹Jožef Stefan Institute, ¹⁰Charles University, ¹¹Kaunas University of Technology, ¹²ScaDS.AI

Ines Zelch^1,2, Matthias Hagen¹, Benno Stein³, Johannes Kiesel⁴
Reproducing the Argument Quality Prediction of Project Debater
In: ArgMining 2025, July 2025
Link to publication
¹Friedrich-Schiller-University Jena, ²Leipzig University, ³Bauhaus-University Weimar, ⁴GESIS – Leibniz Institute for Social Sciences

Ines Zelch^1,2, Matthias Hagen¹, Benno Stein³, Johannes Kiesel⁴
Segmentation of Argumentative Texts by Key Statements for Argument Mining from the Web
In: ArgMining 2025, July 2025
Link to publication
¹Friedrich-Schiller-Universit Jena, ²Leipzig University, ³Bauhaus-University Weimar, ⁴GESIS – Leibniz Istitute for Social Sciences

Lukas Gienapp^1,2,3, Niklas Deckers^1,3, Martin Potthast^1,2,3, Harrisen Scells⁴
Learning Effective Representations for Retrieval Using Self-Distillation with Adaptive Relevance Margins
In: 15th International Conference on Innovative Concepts and Theories in Information Retrieval (ICTIR 2025), July 2025
Link to publication
¹University of Kassel, ²ScaDS.AI, ³hessian.AI, ⁴University of Tübingen

Jan Heinrich Merker¹, Maik Fröbe¹, Benno Stein², Martin Potthast³, and Matthias Hagen¹
Axioms for Retrieval-Augmented Generation
In: 15th International Conference on Innovative Concepts and Theories in Information Retrieval (ICTIR 2025), July 2025
Link to publication
¹Friedrich-Schiller-University Jena, ²Bauhaus-University Weimar, ³University of Kassel & hessian.AI & ScaDS.AI

Janek Bevendorff¹,², Matti Wiegmann^2,3, Emmelie Richter², Martin Potthast^3,4, Benno Stein²
The Two Paradigms of LLM Detection: Authorship Attribution vs. Authorship Verification
In: ACL Findings 2025, July 2025
Link to publication
¹Leipzig University, ²Bauhaus-University Weimar, ³University of Kassel, ⁴hessian.AI & ScaDS.AI

Lukas Gienapp¹,², Tim Hagen^3,4, Maik Fröbe⁵, Matthias Hagen⁵, Benno Stein⁶, Martin Potthast^2,3,4,Harrisen Scells^3,4The Viability of Crowdsourcing for RAG Evaluation
In: 48th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2025), July 2025
Link to publication
¹Leizig University, ²ScaDS.AI, ³University of Kassel, ⁴hessian.AI, ⁵Friedrich-Schiller-University Jena, ⁶Bauhaus-University Weimar

Michael Dinzinger¹, Laura Caspari¹, Kanishka Ghosh Dastidar¹, Jelena Mitrović¹, Michael Granitzer¹
WebFAQ: A Multilingual Collection of Natural Q&A Datasets for Dense Retrieval
In: SIGIR 2025, July 2025
Link to publication
¹University of Passau

Mohanna Hoveyda¹, Harrie Oosterhuis¹, Arjen P. de Vries¹, Maarten de Rijke², Faegheh Hasibi¹
Adaptive Orchestration of Modular Generative Information Access Systems
In: SIGIR 2025, July 2025
Link to publication
¹Radboud University Nijmegen, ²University of Amsterdam

Djoerd Hiemstra¹
Score-Fitted Indexes and Constant Length Indexes for Information Retrieval (Short Papers)
In: SIGIR 2025, July 2025
Link to publication
¹Radboud University Nijmegen

Daria Alexander¹, Arjen P. de Vries¹
In a Few Words: Comparing Weak Supervision and LLMs for Short Query Intent Classification (Short Papers)
In: SIGIR 2025, July 2025
Link to publication
¹Radboud University Nijmegen

Janek Bevendorff¹, Daryna Dementieva², Maik Fröbe³, Bela Gipp⁴, André Greiner-Petter⁴, Jussi Karlgren⁵, Maximilian Mayerl⁶, Preslav Nakov⁷, Alexander Panchenko⁸, Martin Potthast⁹,¹⁰,¹¹, Artem Shelmanov⁷, Efstathios Stamatatos¹², Benno Stein¹³, Yuxia Wang⁷, Matti Wiegmann¹³, Eva Zangerle⁶
Overview of PAN 2025: Generative AI Detection, Multilingual Text Detoxification, Multi-author Writing Style Analysis, and Generative Plagiarism Detection: Extended Abstract
In: LNCS, ECIR 2025, April 2025
Link to publication
¹Leipzig University, ²Technical University of Munich, ³Friedrich-Schiller-University Jena, ⁴Georg-August-University Göttingen, ⁵Silo AI Helsinki, ⁶University of Innsbruck, ⁷Mohamed bin Zayed University of Artificial Intelligence Abu Dhabi, ⁸Skoltech & AIRI Moscow, ⁹Kassel University, ¹⁰hessian.AI, ¹¹ScaDS.AI, ¹²University of the Aegean, ¹³Bauhaus-University Weimar

Maik Fröbe¹, Andrew Parry², Harrisen Scells³, Shuai Wang⁴, Shengyao Zhuang^4,5, Guido Zuccon⁴, Martin Potthast⁶, Matthias Hagen¹Corpus Subsampling: Estimating the Effectiveness of Neural Retrieval Models on Large Corpora
In: LNCS, ECIR 2025, April 2025
Link to publication
¹Friedrich-Schiller-University Jena, ²University of Glasgow, ³University of Kassel, ⁴University of Queensland, ⁵CSIRO, ⁶University of Kassel & hessian.AI & ScaDS.AI

Jan Heinrich Merker¹, Janek Bevendorff², Maik Fröbe¹, Tim Hagen³, Harrisen Scells³, Matti Wiegmann², Benno Stein², Matthias Hagen¹, Martin Potthast³,⁴
Web-Scale Retrieval Experimentation with chatnoir-pyterrier
In: LNCS, ECIR 2025, April 2025
Link to publication
¹Friedrich-Schiller-University Jena, ²Bauhau-University Weimar, ³University of Kassel and hessian.AI, ⁴ScaDS.AI

Bogdan Ionescu¹, Henning Müller², Dan-Christian Stanciu¹, Ahmad Idrissi-Yaghir³, Ahmedkhan Radzhabov⁴, Alba García Seco de Herrera⁵, Alexandra Andrei¹, Andrea Storås⁶, Asma Ben Abacha⁷, Benjamin Bracke³, Benjamin Lecouteux⁸, Benno Stein⁹, Cécile Macaire⁸, Christoph M. Friedrich³, Cynthia Sabrina Schmidt¹⁰, Diandra Fabre⁸, Didier Schwab⁸, Dimitar Dimitrov11, Emmanuelle Esperança-Rodier⁸, Gabriel Constantin¹, Helmut Becker¹⁰, Hendrik Damm³, Henning Schäfer¹⁰, Ivan Rodkin¹², Ivan Koychev¹¹, Johannes Kiesel⁹, Johannes Rückert³, Josep Malvehy¹³, Liviu-Daniel Ștefan1, Louise Bloch³, Martin Potthast¹⁴, Maximilian Heinrich⁹, Michael A. Riegler⁶, Mihai Dogariu1, Noel Codella⁷, Pål Halvorsen⁶, Preslav Nakov¹², Raphael Brüngel³, Roberto Adres Novoa¹⁵, Rocktim Jyoti Das¹⁶, Steven A. Hicks⁶, Sushant Gautam⁶, Tabea M.G. Pakull¹⁰, Vajira Thambawita⁶, Vassili Kovalev^17,18, Wen-Wai Yim7, Zhuohan Xie¹²ImageCLEF 2025: Multimedia Retrieval in Medical, Social Media and Content Recommendation Applications
In: LNCS, ECIR 2025, April 2025
Link to publication

¹National University of Science and Technology POLITEHNICA Bucharest, ²HES-SO Valais-Wallis, ³University of Applied Science and Arts Dortmund,
⁴Belarus State University, ⁵National University of Distance Education Spain, ⁶SimulaMet Norway, ⁷Microsoft USA, ⁸Grenoble Alpes University, ⁹Bauhaus-University Weimar, ¹⁰University Hospital Essen, ¹¹Sofia University, ¹²Mohamed bin Zayed University of Artiﬁcial Intelligence United Arab Emirates, ¹³Hospital Clinic of Barcelona, ¹⁴University of Kassel, hessian.AI, and ScaDS.AI, ¹⁵Stanford University, ¹⁶Indian Institute of Technology Delhi, ¹⁷Belarus National Academy of Sciences, ¹⁸Belarus State University, Belarus

Ferdinand Schlatt¹, Maik Fröbe¹, Harrisen Scells^2,6, Shengyao Zhuang^3,4, Bevan Koopman³, Guido Zuccon⁴, Benno Stein⁵, Martin Potthast^2,6,7, Matthias Hagen¹Rank-DistiLLM: Closing the Effectiveness Gap Between Cross-Encoders and LLMs for Passage Re-ranking
In: LNCS, ECIR 2025, April 2025
Link to publication
¹Friedrich-Schiller-University Jena, ²University of Kassel, ³CSIRO,
⁴University of Queensland, ⁵Bauhaus-University Weimar, ⁶hessian.AI, 7ScaDS.AI

Sebastian Heineking¹, Jonas Probst¹, Daniel Steinbach¹, Martin Potthast^2,3, Harrisen Scells^1,2Ranking Generated Answers: On the Agreement of Retrieval Models with Humans on Consumer Health Questions
In: LNCS, ECIR 2025, April 2025
Link to publication
¹University of Leipzig, ²University of Kassel and hessian.AI, ³ScaDS.AI

Ferdinand Schlatt¹, Maik Fröbe¹, Harrisen Scells^2,6, Shengyao Zhuang^3,4, Bevan Koopman³, Guido Zuccon⁴, Benno Stein⁵, Martin Potthast^2,6,7, Matthias Hagen1
Set-Encoder: Permutation-Invariant Inter-passage Attention for Listwise Passage Re-ranking with Cross-Encoders
In: LNCS, ECIR 2025 submissions (Martin Potthast, Arjen de Vries), April 2025
Link to publication
¹Friedrich-Schiller-University Jena, ²University of Kassel, ³CSIRO, ⁴The University of Queensland, ⁵Bauhaus-University Weimar, ⁶hessian.Ai, ⁷ScaDS.AI

Michael Granitzer¹, Mohamad Hayek², Sebastian Heineking³, Gijs Hendriksen⁴, Martin Golasowski⁵, Michael Dinzinger¹, Saber Zerhoudi¹
OpenWebSearch.eu – Building an Open Web Index on EuroHPC JU Infrastructures
In: Proceedings of the Second EuroHPC user day, Procedia Computer Science, March 2025
Link to publication
¹University of Passau, 2 Leibniz Supercomputing Centre Munich,³University of Leipzig, ⁴Radbound University Nijmegen, ⁵IT4I National Supercomputing Center Ostrava

Publications 2024

Sheikh Mastura Farzana¹, Maik Fröbe², Michael Granitzer³, Gijs Hendriksen⁴, Djoerd Hiemstra⁴, Martin Potthast^5,6,7, Arjen P. de Vries⁴, Saber Zerhoudi³
Report on the 1st International Workshop on Open Web Search (WOWS 2024) at ECIR 2024
In: SIGIR Forum, June 2024
Link to publication
¹German Aerospace Center, ²Friedrich-Schiller-University Jena, ³University of Passau, ⁴Radbound University Nijmegen, ⁵University of Kassen, ⁶hessian.AI, ⁷ScaDS.AI

Michael Granitzer¹ et al.
Impact and Development of an Open Web Index for Open Web Search
In: JASIST, May 2024
Link to publication
¹University Passau

Proceedings

Saber Zerhoudi¹, Michael Granitzer¹
Generative Agents Navigating Digital Libraries
In: ICADL 2024, December 2024
Link to publication
¹University of Passau

Mohammed Al-Maamari¹, Istaiti Mahmoud¹, Saber Zerhoudi¹, Michael Dinzinger¹, Michael Granitzer¹, Jelena Mitrović¹
Impact of Tokenization Techniques on URL Classification
In: 6th International Open Search Symposium (OSSYM2024), October 2024
Link to publication
¹University of Passau

Sarah Frank1,2, Sebastian Schäffer¹, Andreas Wagner², Alexander Steinmaurer³
Creating Explainable Summaries for Long Scientific Documents using Large Language Models
In: 6th International Open Search Symposium (OSSYM2024), October 2024
Link to publication
¹Graz University of Technology, ²CERN Geneva, ³Institute of Digital Sciences Austria

Alexander Nussbaumer¹, Sebastian Gürtl¹, Johannes Honeder¹, Tobias Hecking², Christian Gütl¹
Enriching Science Search with the Open Search Framework MOSAIC
In: 6th International Open Search Symposium (OSSYM2024), October 2024
Link to publication
¹Graz University of Technology, ²German Aerospace Center Cologne

Gijs Hendriksen¹, Djoerd Hiemstra¹, Arjen de Vries¹
An Open Source Implementation of Web Clustering Algorithms for Selective Search
In: 6th International Open Search Symposium (OSSYM2024), October 2024
Link to publication
¹Radbound University Nijmegen

Noor Afshan Fathima¹, Martin Golasowski², Michael Granitzer³, Andreas Wagner¹, Chris Ariyo⁴, Gijs Hendriksen⁵, John Truckenbrodt⁶, Katja Mankinen⁴, Michael Dinzinger³, Mikael Karlsson⁴, Mohamad Hayek⁷, Stavros Moiras¹, Lukas Vojacek², Stephan Hachinger⁷, JanMartinovič²
Federated Data Infrastructure for the Open Web Search
In: 6th International Open Search Symposium (OSSYM2024), October 2024
Link to publication
¹CERN Geneva, ²IT4I National Supercomputing Center Ostrava, ³University of Passau, ⁴CSC – IT Center for Science Espoo, ⁵Radbound University Nijmegen, ⁶German Aerospace Center Berlin,⁷Leibniz Supercomputing Centre Munich

Michael Dinzinger¹, Michael Granitzer¹, Jelena Mitrović¹, Saber Zerhoudi¹
OWLer: A Distributed and Collaborative Open Web Crawler
In: 6th International Open Search Symposium (OSSYM2024), October 2024
Link to publication
¹University of Passau

Noor Afshan Fathima¹, Michael Granitzer², Michael Dinzinger², Andreas Wagner¹
Architecting the Opensearch Service at CERN for OpenWebSearch.EU
In: 6th International Open Search Symposium (OSSYM2024), October 2024
Link to publication
¹CERN Geneva, ²University of Passau

Johannes Kiesel¹, Marcel Gohsen¹, Nailia Mirzakhmedova¹, Matthias Hagen², Benno Stein¹
Who Will Evaluate the Evaluators? Exploring the Gen-IR User Simulation Space
In: Experimental IR Meets Multilinguality, Multimodality, and Interaction. 15th International Conference of the CLEF Association (CLEF 2024), September 2024
Link to publication
¹Bauhaus-University Weimar, ²Friedrich-Schiller-University Jena

Janek Bevendorff1,2, Matti Wiegmann², Jussi Karlgren³, Luise Dürlich⁴, Evangelia Gogoulou⁴, Aarne Talman⁵, Efstathios Stamatatos⁶, Martin Potthast^7,8,9, Benno Stein²
Overview of the “Voight-Kampff” Generative AI Authorship Verification Task at PAN and ELOQUENT 2024
In: Working Notes of the Conference and Labs of the Evaluation Forum (CLEF 2024), September 2024
Link to publication
¹Leipzig University, ²Bauhaus-University Weimar, ³Silo AI Helsinki, ⁴RISE Research Institutes of Sweden, ⁵University of Helsinki,⁶University of the Aegean, ⁷University of Kassel, ⁸hessian.AI, ⁹SCaDS.AI

Niklas Deckers^1,2, Julia Peters, Martin Potthast^1,2
Manipulating embeddings of stable diffusion prompts
In: IJCAI ’24: Proceedings of the Thirty-Third International Joint Conference on Artificial Intelligence, August 2024
Link to publication
¹Leipzig University, ²SacDS.AI

Maik Fröbe¹, Harrisen Scells², Theresa Elstner², Christopher Akik²i, Lukas Gienapp², Jan Heinrich Reimer³, Sean MacAvaney⁴, Benno Stein⁵, Matthias Hagen¹, Martin Potthast^6,7,8Resources for Combining Teaching and Research in Information Retrieval Coursework
In: SIGIR ’24: Proceedings of the 47th International ACM SIGIR Conference on Research and Development in Information Retrieval, July 2024
Link to publication
¹Friedrich-Schiller-University Jena, ²Leipzig University,³Instirute for Computer Science, Friedrich-Schiller-University Jena, ⁴University of Glasgow, ⁵Bauhaus-University Weimar, ⁶University of Kassel, ⁷hessian.AI, ⁸SCaDS.AI

Maik Fröbe¹, Joel Mackenzie², Bhaskar Mitra³, Franco Maria Nardini⁴, Martin Potthast^5,6,7ReNeuIR at SIGIR 2024: The Third Workshop on Reaching Efficiency in Neural Information Retrieval
In: SIGIR ’24: Proceedings of the 47th International ACM SIGIR Conference on Research and Development in Information Retrieval, July 2024
Link to publication
¹Friedrich-Schiller-University Jena, ²The University of Queensland, ³Microsoft Research Montreal,⁴ISTI-CRN Pisa, ⁵University of Kassel, ⁶hessian.AI, ⁷SCaDS.AI

Nandan Thakur¹, Luiz Bonifacio², Maik Fröbe³, Alexander Bondarenko^3,4, Ehsan Kamalloo¹, Martin Potthast^5,6,7, Matthias Hagen³, Jimmy Lin¹
Systematic Evaluation of Neural Retrieval Models on the Touché 2020 Argument Retrieval Subset of BEIR
In: SIGIR ’24: Proceedings of the 47th International ACM SIGIR Conference on Research and Development in Information Retrieval, July 2024
Link to publication
¹University of Waterloo, ²UNICAMP & University of Waterloo Campinas, ³Friedrich-Schiller-University Jena, ⁴Leipzig University, ⁵University of Kassel, ⁶hessian.AI, ⁷SCaDS.AI

Lukas Gienapp1,2, Harrisen Scells¹, Niklas Deckers1,2, Janek Bevendorff¹, Shuai Wang³, Johannes Kiesel⁴, Shahbaz Syed¹, Maik Fröbe⁵, Guido Zuccon³, Benno Stein⁴, Matthias Hagen⁵, and Martin Potthast^6,7Evaluating Generative Ad Hoc Information Retrieval
In: SIGIR ’24: Proceedings of the 47th International ACM SIGIR Conference on Research and Development in Information Retrieval, July 2024
Link to publication
¹Leipzig University, ²SacDS.AI, ³The University of Queensland, ⁴Bauhaus-University Weimar, ⁵Friedrich-Schiller-University Jena, ⁶University of Kassel, ⁷hessian.AI

Saber Zerhoudi¹, Michael Granitzer¹
PersonaRAG: Enhancing Retrieval-Augmented Generation Systems with User-Centric Agents
In: IR-RAG workshop @ SIGIR24, July 2024
Link to publication
¹University of Passau

Timon Ziegenbein¹, Shahbaz Syed², Martin Potthast, Henning Wachsmuth¹
Objective Argument Summarization in Search
In: Robust Argumentation Machines. RATIO 2024, July 2024
Link to publication
¹Leibniz University Hannover, ²Leipzig University

Laura Caspari¹, Kanishka Ghosh Dastidar¹, Saber Zerhoudi¹, Jelena Mitrovic¹, Michael Granitzer¹
Beyond Benchmarks: Evaluating Embedding Model Similarity for Retrieval Augmented Generation Systems
In: IR-RAG workshop @ SIGIR24, July 2024
Link to publication
¹University Passau

Nailia Mirzakhmedova¹, Johannes Kiesel¹, Milad Alshomary², Maximilian Heinrich¹, Nicolas Handke³, Xiaoni Cai¹, Valentin Barriere, Doratossadat Dastgheib, Omid Ghahroodi, MohammadAli SadraeiJavaheri, Ehsaneddin Asgari, Lea Kawaletz, Henning Wachsmuth², Benno Stein¹
The Touché23-ValueEval Dataset for Identifying Human Values behind Arguments
In: Proceedings of the 2024 Joint International Conference on Computational Linguistics, Language Resources and Evaluation (LREC-COLING 2024), May 2024
Link to publication
¹Bauhaus-University Weimar, ²Leibniz University Hannover, ³Leipzig University

Janek Bevendorff¹, Xavier Bonet Casals², Berta Chulvi³, Daryna Dementieva⁴, Ashaf Elnagar⁵, Dayne Freitag⁶, Maik Fröbe⁷, Damir Korenčić³, Maximilian Mayerl⁸, Animesh Mukherjee⁹, Alexander Panchenko¹⁰, Martin Potthast^1,11, Francisco Rangel¹², Paolo Rosso^3,13, Alisa Smirnova¹⁴, Efstathios Stamatatos¹⁵, Benno Stein16, Mariona Taulé², Dmitry Ustalov¹⁷, Matti Wiegmann¹⁶, Eva Zangerle⁸Overview of PAN 2024: Multi-Author Writing Style Analysis, Multilingual Text Detoxification, Oppositional Thinking Analysis, and Generative AI Authorship Verification (extended abstract)
In: Advances in Information Retrieval. ECIR 2024. Lecture Notes in Computer Science, March 2024
Link to publication
¹Leipzig University, ²University of Barcelona, ³Techical University of Valencia, ⁴Technical University of Munich,⁵University of Sharjah, ⁶SRI International, ⁷Friedrich-Schiller-University Jena,⁸University of Innsbruck,⁹Indian Institute of Technology Kharagpur, ¹⁰Skolkovo Institute of Science and Technology, ¹¹ScaDS.AI, ¹²Symanto Research, ¹³ValgrAI, ¹⁴Toloka,¹⁵University of the Aegean, ¹⁶Bauhaus-Unversity Weimar,¹⁷JetBrains

Bogdan Ionescu, Henning Müller, Ana Maria Drăgulinescu, Ahmad Idrissi-Yaghir, Ahmedkhan Radzhabov, Alba Garcia Seco de Herrera, Alexandra Andrei, Alexandru Stan, Andrea M. Storås, Asma Ben Abacha, Benjamin Lecouteux, Benno Stein³, Cécile Macaire, Christoph M. Friedrich, Cynthia Sabrina Schmidt, Didier Schwab, Emmanuelle Esperança-Rodier, George Ioannidis, Griffin Adams, Henning Schäfer, Hugo Manguinhas, Ioan Coman, Johanna Schöler, Johannes Kiesel, Johannes Rückert, Louise Bloch, Martin Potthast, Maximilian Heinrich³, Meliha Yetisgen, Michael A. Riegler, Neal Snider, Pål Halvorsen, Raphael Brüngel, Steven A. Hicks, Vajira Thambawita, Vassili Kovalev, Yuri Prokopchuk & Wen-Wai Yim
Advancing Multimedia Retrieval in Medical, Social Media and Content Recommendation Applications with ImageCLEF 2024 (conference paper)
In: Advances in Information Retrieval. ECIR 2024. Lecture Notes in Computer Science, March 2024
Link to publication
³Bauhaus-Unversity Weimar

Maik Fröbe¹, Theresa Elstner², Harrisen Scells², Benno Stein³, Martin Potthast^2,4Prototyping Open Web Search Applications with TIRA: A Case Study in Research-oriented Teaching
5th International Open Search Symposium (OSSYM2023), March 2024
Link to publication
¹Friedrich-Schiller-University Jena, ²Leipzig University, ³Bauhaus-University Weimar, 4ScaDS.AI

Simon Hitzginger¹, Alexander Nussbaumer¹, Christian Gütl¹, Chiara Ruß-Baumann¹
Understanding and Mitigating Cognitive Bias during Web Search
In: 5th International Open Search Symposium (OSSYM2023), March 2024
Link to publication
¹Graz University of Technology

Alexander Nussbaume¹, Rohit Kaushi1,2, Gijs Hendriksen³, Sebastian Gürtl¹, Christian Gütl¹
Conceptual Design and Implementation of a Prototype Search Application using the Open Web Search Index
In: 5th International Open Search Symposium (OSSYM2023), March 2024
Link to publication
¹Graz University of Technology, ²University of Waterloo, ³Radbound University Nijmegen

Ines Zelch¹,², Matthias Hagen¹, Martin Potthast²,³
Commercialized Generative AI: A Critical Study of the Feasibility and Ethics of Generating Native Advertising Using Large Language Models in Conversational Web Search
In: 5th International Open Search Symposium (OSSYM2023), March 2024
Link to publication
¹Friedrich-Schiller-University Jena, ²Leipzig University, ³ScaDS.AI

Djoerd Hiemstra¹, Gijs Hendriksen¹, Chris Kamphuis¹, Arjen P. de Vries¹
Challenges of Index Exchange for Search Engine Interoperability
In: 5th International Open Search Symposium (OSSYM2023), March 2024
Link to publication
¹Radbound University Nijmegen

Janek Bevendorff¹, Matti Wiegmann¹, Martin Potthast²,³, Benno Stein¹
Product Spam On YouTube: a Case Study
In: 5th International Open Search Symposium (OSSYM2023), March 2024
Link to publication
¹Bauhaus-University Weimar, ²Leipzig University, ³ScaDS.AI

Mohammed Al-Maamari¹, Mahmoud Istaiti¹, Saber Zerhoudi¹, Michael Dinzinger¹, Michael Granitzer¹, Jelena Mitrović¹
A Comprehensive Dataset for Webpage Classification
In: 5th International Open Search Symposium (OSSYM2023), March 2024
Link to publication
¹University of Passau

Michael Dinzinger¹, Mohammed Al-Maamari¹, Saber Zerhoudi¹, Mahmoud Istaiti¹, Jelena Mitrović¹, Michael Granitzer¹
OWler: Preliminary results for building a Collaborative Open Web Crawler
In: 5th International Open Search Symposium (OSSYM2023), March 2024
Link to publication
¹University of Passau

Andrew Parry¹, Maik Fröbe², Sean MacAvaney¹, Martin Potthast^3,4, Matthias Hagen²
Analyzing Adversarial Attacks on Sequence-to-Sequence Relevance Models (full paper)
In: Advances in Information Retrieval. ECIR 2024. Lecture Notes in Computer Science, in March 2024
Link to publication
¹University of Glasgow, ²Friedrich-Schiller-University Jena, ³Leipzig University, ⁴ScaDS.AI

Johannes Kiesel¹, Çağrı Çöltekin², Maximilian Heinrich¹, Maik Fröbe³, Milad
Alshomary⁴, Bertrand De Longueville⁵, Tomaž Erjavec⁶, Nicolas Handke⁷, Matyáš Kopp⁸, Nikola Ljubešić⁶, Katja Meden⁶, Nailia Mirzakhmedova1, Vaidas Morkevičius⁹, Theresa Reitis-Munstermann5, Mario Scharfbillig5, Nicolas Stefanovitch5, Henning Wachsmuth⁴, Martin Potthast^7,10, Benno Stein¹
Overview of Touché 2024: Argumentation Systems (full paper)
In: Advances in Information Retrieval. ECIR 2024. Lecture Notes in Computer Science, in March 2024
Link to publication
¹Bauhaus-University Weimar, ²University of Tübingen, ³Friedrich-Schiller-University Jena,⁴Leibniz University Hannover,⁵European Commission, Joint Research Centre,⁶Jožef Stefan Institute, ⁷Leipzig University, ⁸Charles University, ⁹Kaunas University of Technology, ¹⁰ScaDS.AI

Janek Bevendorff¹,∗ , Matti Wiegmann²,∗ , Martin Potthast¹³ , and Benno Stein²
Is Google Getting Worse? A Longitudinal Investigation of SEO Spam in Search Engines
In: In Advances in Information Retrieval. 46th European Conference on IR Research (ECIR 2024), Lecture Notes in Computer Science, March 2024. Springer.
Link to publication
¹Leipzig University, ² Bauhaus-Universität Weimar, ³ ScaDS.AI, *equal contributation

Ferdinand Schlatt¹, Maik Fröbe¹, Matthias Hagen¹,
Investigating the Effects of Sparse Attention on Cross-Encoders
In: In Advances in Information Retrieval. 46th European Conference on IR Research (ECIR 2024), Lecture Notes in Computer Science, March 2024. Springer.
Link to publication
¹Friedrich-Schiller University, Jena

Andrew Parry¹, Maik Fröbe², Sean MacAvaney¹, Martin Potthast³, Matthias Hagen²,
Analyzing Adversarial Attacks on Sequence-to-Sequence Relevance Models
In: In Advances in Information Retrieval. 46th European Conference on IR Research (ECIR 2024), Lecture Notes in Computer Science, March 2024. Springer.
Link to publication
¹University of Glasgow, ²Friedrich-Schiller University, Jena, ³Leipzig University

Gijs Hendriksen¹, Michael Dinzinger², Sheikh Mastura Farzana³, Noor Afshan Fathima⁴, Maik Fröbe⁵, Sebastian Schmidt⁶, Saber Zerhoudi², Michael Granitzer², Matthias Hagen⁵, Djoerd Hiemstra¹, Martin Potthast⁶ and Benno Stein⁷
The Open Web Index: Crawling and Indexing the Web for Public Use
In: In Advances in Information Retrieval. 46th European Conference on IR Research (ECIR 2024), Lecture Notes in Computer Science, March 2024. Springer.
Link to publication
¹Radboud University Nijmegen, ²University of Passau, ³German Aerospace Center, ⁴CERN, ⁵Friedrich-Schiller University, ⁶Leipzig University, ⁷Bauhaus University Weimar

Gijs Hendriksen¹, Djoerd Hiemstra¹, Arjen de Vries¹
Weighted AUReC: Handling Skew in Shard Map Quality Estimation for Selective Search
In: In Advances in Information Retrieval. 46th European Conference on IR Research (ECIR 2024), Lecture Notes in Computer Science, March 2024. Springer.
Link to publication
¹Radboud University Nijmegen

Johannes Kiesel¹, Marcel Gohsen¹, Nadia Mirzakhmedova¹, Matthias Hagen², Benno Stein¹
Simulating Follow-up Questions in Conversational Search
In: In Advances in Information Retrieval. 46th European Conference on IR Research (ECIR 2024), Lecture Notes in Computer Science, March 2024. Springer.
Link to publication
¹Bauhaus University Weimar, ²Friedrich-Schiller University, Jena

Sheikh Farzana¹, Maik Fröbe², Michael Granitzer³, ³Saber Zerhoudi, Gijs Hendriksen⁴, Djoerd Hiemstra⁴, Martin Potthast⁵,
1st International Workshop on Open Web Search
In: In Advances in Information Retrieval. 46th European Conference on IR Research (ECIR 2024), Conference Paper, March 2024. Springer.
Link to publication
¹German Aerospace Center, ²Friedrich-Schiller University, Jena, ³University of Passau, ⁴Radboud University Nijmegen,⁵Leipzig University

Ines Zelch¹, Matthias Hagen¹, Martin Potthast²
A User Study on the Acceptance of Native Advertising in Generative IR
In: Proceedings of the 2024 Conference on Human Information Interaction and Retrieval (CHIIR ’24)
Link to publication
¹Friedrich-Schiller University, Jena, ²Leipzig University

Michael Dinzinger¹, Michael Granitzer¹
A longitudinal study of content control mechanisms
In: Proceedings of the Temporal Web Analytics Workshop ’24 (TempWeb)
Link to Publication
¹University of Passau

Sebastian Schmidt, Ines Zelch¹^,², Janek Bevendorff³, Benno Stein³,
Matthias Hagen¹, Martin Potthast²
Detecting Generated Native Ads in Conversational Search
In: WWW ’24: Proceedings of the ACM Web Conference 2024, in February 2024
Link to publication
¹Friedrich-Schiller-University Jena, ²Leipzig University, ³Bauhaus-University Weimar

Michael Dinzinger¹, Florian Hess², Michael Granitzer¹
A Survey of Web Content Control for Generative AI
In: WOWS 2024, January 2024
Link to publication
¹University of Passau, ²Carl von Ossietzky Universität Oldenburg

Please also view the projects deliverables.

Publications 2023

Michael Granitzer et al.¹
Impact and Development of an Open Web Index for Open Web Search
In: JASIST, Willey, August 2023
Link to publication
¹University of Passau

Maik Fröbe¹, Jan Heinrich Reimer¹, Sean MacAvaney², Niklas Deckers³, Simon Reich³, Janek Bevendorff⁴, Benno Stein⁴, Matthias Hagen¹, Martin Potthast³
The Information Retrieval Experiment Platform
In: Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR ’23), ACM, July 2023
Link to publication
¹ Friedrich-Schiller-University Jena, ² University of Glasgow, ³ Leipzig University, ⁴ Bauhaus-University Weimar

Janek Bevendorff¹, Sanket Gupta¹, Johannes Kiesel¹, Benno Stein¹
An Empirical Comparison of Web Content Extraction Algorithms
In: Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR ’23), ACM, July 2023
Link to publication
¹ Bauhaus-University Weimar

Harrisen Scells¹ and Martin Potthast¹
Pybool_ir: A Toolkit for Domain-Specific Search Experiments
In: Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR ’23), ACM, July 2023
Link to publication
¹ Leipzig University

Harrisen Scells¹, Ferdinand Schlatt², and Martin Potthast¹
Smooth Operators for Effective Systematic Review Queries
In: Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR ’23), ACM, July 2023
Link to publication
¹ Leipzig University, ² Friedrich-Schiller-University Jena

Jan Heinrich Reimer¹, Sebastian Schmidt², Maik Fröbe¹, Lukas Gienapp², Harrisen Scells², Benno Stein³, Matthias Hagen¹, Martin Potthast²
The Archive Query Log: Mining Millions of Search Result Pages of Hundreds of Search Engines from 25 Years of Web Archives
In: Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR ’23), ACM, July 2023
Link to publication
¹ Friedrich-Schiller-University Jena, ² Leipzig University, ³ Bauhaus-University Weimar

Negin Ghasemi¹, Mohammad Aliannejadi², Hamed Bonab³, Evangelos Kanoulas², Arjen P. de Vries¹, James Allan⁴, and Djoerd Hiemstra¹
Cross-Market Product-Related Question Answering
In: Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR ’23), ACM, July 2023
Link to publication
¹ Radboud University, ² University of Amsterdam, ³ Amazon Inc., ⁴ University of Massachusetts Amherst

Chris Kamphuis¹, Aileen Lin², Siwen Yang², Jimmy Lin², Arjen P. de Vries¹, and Faegheh Hasibi¹
MMEAD: MS MARCO Entity Annotations and Disambiguations
In: Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR ’23), ACM, July 2023
Link to publication
¹ Radboud University, ² University of Waterloo

Miriam Louise Carnot¹, Lorenz Heinemann¹, Jan Braker¹, Tobias Schreieder¹, Johannes Kiesel², Maik Fröbe³, Martin Potthast¹, and Benno Stein²
On Stance Detection in Image Retrieval for Argumentation
In: Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR ’23), ACM, July 2023
Link to publication
¹ Leipzig University, ² Bauhaus-University Weimar, ³ Martin-Luther-Universität Halle Wittenberg

Tim De Jonge¹, Djoerd Hiemstra¹
UNFair: Search Engine Manipulation, Undetectable by Amortized Inequity
In: Proceedings of the 2023 ACM Conference on Fairness, Accountability, and Transparency (FAccT ’23), ACM, July 2023
Link to publication
¹ Radboud University

Sheikh Mastura Farzana¹, Tobias Hecking¹
Geoparsing at Web-scale – Challenges and Opportunities
In: GeoExT 2023: First International Workshop on Geographic Information Extraction from Texts at ECIR 2023, CEUR Workshop proceedings, April 2023
Link to publication
¹ German Aerospace Center (DLR)

Project Deliverables

Noor Afshan Fathima¹, Andreas Wagner¹, John Truckenbrodt², Mohamad Hayek³, Martin Golasowksi⁴, Michael Dinzinger⁵, Saber Zerhoudi⁵, Sebastian Heineking⁶, Ines Zelch⁶, Gjis Hendriksen⁷, Michael Granitzer^5*
Training Material Available for Partners
This document outlines the second deliverable of Work Package 5 (WP5) within the OpenWebSearch.eu project, titled “D5.2 Training Material for Partners”. November 2024. Zenodo.
Link to publication
¹European Organization for Nuclear Research, ²Deutsches Zentrum für Luft- und Raumfahrt e. V., ³Leibniz Supercomputing Centre, ⁴VSB – Technical University of Ostrava, University of Passau, Leipzig University, Radboud University, Nijmegen, ⁵University of Passau, ⁶Leipzig University, ⁷Radboud University, Nijmegen, * Project Lead

Alexander Nussbaumer¹, Chiara Ruß-Baumann¹, Izidor Mlaker²
Report of Privacy, Transparency, and Trust Models for Search Applications V2
This document describes the deliverable D4.3 “Report of privacy, transparency, and trust models for search applications V2”. November 2024. Zenodo.
Link to publication
¹Graz University of Technology, ²A1 Slovenia

Sebastian Gürtl¹, Alexander Nussbaumer¹, Christian Gütl¹, Izidor Mlaker², Rigon Sallauka², Roxanne El Baff³, Tobias Hecking⁴
Search Application Prototypes
This document describes the deliverable D4.1 “Search Application Prototypes”. It reports on initial developments of search applications in the context of tasks T4.1 and T4.2, including a a science search application and a restaurant recommender. November 2024. Zenodo.
Link to publication
¹Graz University of Technology, ²A1 Slovenia, ³Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR),⁴German Aerospace Center

Gjis Hendriksen¹, Djoerd Hiemstra¹, Arjen de Vries¹, Sebastian Gürtl², Alexander Nussbaumer², Sebastian Heineking³, Ines Zelch³, Martin Pottharst³, Michael Granitzer⁴*, Michael Dinzinger⁴, Saber Zerhoudi⁴, Noor Afshan Fathima⁵
The OpenWebSearch Hub and the Open Web Index Y2
This document describes the second version (out of three) of deliverable D3.3 “The OpenWebSearch Hub and the Open Web Index”. November 2024. Zenodo.
Link to publication
¹Radboud University, Nijmegen, ²Graz University of Technology, ³Leipzig University, ⁴University of Passau,⁵European Organization for Nuclear Research, *Project Lead

Sebastian Heineking¹, Ines Zelch¹, Janek Bevendorff¹, Sheik Mastura Farzana², Laura Caspari³, Martin Pottharst¹
Semantic Enrichment Algorithms and Models
This document reviews the status of Deliverable D2.3 “Semantic Enrichment Algorithms and Models”. The deliverable is reviewed in comparison to the objectives planned in the proposal, and with respect to how it integrates with other components of the project. November 2024. Zenodo.
Link to publication
¹Leipzig University, ² Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR), ³University of Passau

Saber Zerhoudi¹, Michael Dinzinger¹, Michael Granitzer¹*
Open Webmaster Console Software Stack & Services V1
This document provides a detailed overview of the first deliverable for D1.4 “Open Webmaster Console Software Stack & Services”. It outlines the current progress in the development and launch of the OWS Webmaster Console and its services. November 2024. Zenodo.
Link to publication
¹University of Passau, * Project Lead

Saber Zerhoudi¹, Michael Dinzinger¹, Michael Granitzer¹*
Open Website Index & Open Crawl Storage Index V1
This document provides a detailed overview of the first deliverable for D1.3 “Open Website Index & Open Crawl Storage Index”. It outlines the current progress in the development and launch of the Open Website Index & Open Crawl Storage Index. November 2024. Zenodo.
Link to publication
¹University of Passau, * Project Lead

Michael Dinzinger¹, Saber Zerhoudi¹, Tobias Hecking², Sebastian Heineking³, Martin Pottharst³, Gjis Hendriksen⁴, Noor Afshan Fathima⁵, Michael Granitzer¹*
Crawler Coordination Software Stack & Demonstrator V2
This document provides a detailed overview of the second deliverable for D1.2 “The OpenWebSearch Crawler and the Crawling Frontier”. It outlines the achievements in developing and launching the Open Web Crawler (OWLer) and its related software components. November 2024. Zenodo.
Link to publication
¹University of Passau, ² Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR), ³ Leipzig University, ⁴ Radboud University, Nijmegen, ⁵ European Organization for Nuclear Research, * Project Lead

Noor Afshan Fathima¹, Andreas Wagner¹, Martin Golasowski², Jon Truckenbrodt², Katja Mankinen⁴, Stephan Hachinger⁵, Michael Granitzer^6*Launch of the Pilot Infrastructure
The document provides a detailed overview of the first deliverable of Work Package 5 (WP5) entitled “D5.1 Launch of the Pilot Infrastructure”, which is part of the OpenWebSearch.eu project. March 2024. Zenodo.
Link to publication
¹European Organization for Nuclear Research, ² Technical University of Ostrava, ³ German Aerospace Center, ⁴ CSC – IT-Center for Sciene,Finland, ⁵Leibniz Supercomputing Centre, ⁶University of Passau, *Project Lead

Sebastian Schmidt¹, Ines Zelch¹, Janek Bevendorff¹, Maik Fröbe¹, Martin Pottharst¹, Michael Granitzer²*
The OpenWebSearch WARC parsing & content analysis library Version 1.0
This publication reviews the status of Deliverable D2.1 “The OpenWebSearch WARC parsing and content analysis library” of the OpenWebSearch.eu project. March 2024. Zenodo.
Link to publication
¹Leipzig University, ² University of Passau, *Project Lead

Talks + Lectures

2024

Christine Plote¹
Gut zu finden? Wie Suchmaschinen unseren Blick auf die Welt prägen.
Talk at ‘Orientierung in der digitalen Welt. Wohin führen uns Google, TikTok & Co?‘ at ‘Evangelische Akademie Tutzing‘, Tutzing, Germany, 2 March 2024
¹Open Search Foundation

Christine Plote¹
Google kennt Dich: Über Suchmaschinen, Privatsphäre und wie man es besser machen kann
Talk at ‘Das Otto‘, Neuburg, Germany, 15 January 2024
¹Open Search Foundation

2023

Michael Granitzer¹, Christine Plote²
“NGIForum23”
Participation in Panel Discussion on “Open Web Search, Large Language Models and Beyond” at the NGI Forum, 15-16 November 2023
Link to recording
¹ University of Passau, ² Open Search Foundation

Christine Plote¹
“Der Traum vom freien Raum – Das Internet und seine Utopien”
Presentation & Talk at Akademie Tutzing, Tutzing, Germany, October 28, 2023
Link
¹ Open Search Foundation

Stefan Voigt¹
“5-year into the Open Search Initiative: state of play and future perspective”
Presentation & Talk at EnviroInfo 2023, Garching near Munich, Germany, October 11-13, 2023
Link
¹ Open Search Foundation

Dieter Kranzlmüller¹, Stephan Hachinger¹
“Open Search – new approaches towards a sustainable search infrastructure”
Presentation & Talk at EnviroInfo 2023, Garching near Munich, Germany, October 11-13, 2023
Link
Leibniz Supercomputing Centre of the BAdW (LRZ)

Tobias Hecking¹
“OpenSearch@DLR project – new tools for scientific search and access to environmental data”
Presentation & Talk at EnviroInfo 2023, Garching near Munich, Germany, October 11-13, 2023
Link
¹ German Aerospace Center (DLR)

Michael Granitzer¹
“OpenWebSearch.eu – Building an Open Web Index for an open web search ecosystem”
Keynote at LWDA 2023 – “Learning, Knowledge, Data, Analysis”, Marburg, Germany, October 9-11, 2023
Link
¹ University of Passau

Janek Bevendorff¹, Matti Wiegmann¹, Martin Potthast², Benno Stein¹
“Product Spam on YouTube: A Case Study?”
Presentation & Talk at 5th International Open Search Symposium #OSSYM23, Geneva, Switzerland and Online, October 4-6, 2023
Link
¹ Bauhaus University Weimar, ² WEBIS

Djoerd Hiemstra¹, Gijs Hendriksen¹, Chris Kamphuis¹, Arjen P. de Vries¹
“Challenges of index exchange for search engine interoperability?”
Presentation & Talk at 5th International Open Search Symposium #OSSYM23, Geneva, Switzerland and Online, October 4-6, 2023
Link
¹ Radboud University

Maik Fröbe¹, Theresa Elstner², Harrisen Scells³, Benno Stein⁴, Martin Potthast³
“Prototyping Open Web Search Applications with TIRA: A Case Study in Research-oriented Teaching”
Presentation & Talk at 5th International Open Search Symposium #OSSYM23, Geneva, Switzerland and Online, October 4-6, 2023
Link
¹ Friedrich Schiller Universität Jena, ² University of Leipzig, ³ WEBIS, ⁴ Bauhaus University Weimar

Michael Granitzer¹
“openwebsearch.eu – Where do we stand?”
Invited Talk at 5th International Open Search Symposium #OSSYM23, Geneva, Switzerland and Online, October 4-6, 2023
Link
¹ University of Passau

Michael Dinzinger¹, Saber Zerhoudi¹, Michael Granitzer¹, Mohammed Al-Maamari¹, Mahmoud Istaiti¹, Jelena Mitrovic¹
“OWler: Preliminary results for building a Collaborative Open Web Crawler”
Presentation & Talk at 5th International Open Search Symposium #OSSYM23, Geneva, Switzerland and Online, October 4-6, 2023
Link
¹ University of Passau

Ines Zelch Leipzig¹, Matthias Hagen¹, Martin Potthas²
“Commercialized Generative AI: A Critical Study of the Feasibility and Ethics of Generating Native Advertising Using Large Language Models in Conversational Web Search”
Presentation & Talk at 5th International Open Search Symposium #OSSYM23, Geneva, Switzerland and Online, October 4-6, 2023
Link
¹ Friedrich-Schiller-University Jena, ² WEBIS

Mohammed Al-Maamari¹, Mahmoud Istaiti¹, Michael Granitzer¹, Michael Dinzinger¹, Saber Zerhoudi¹, Jelena Mitrovic¹
“A Comprehensive Dataset for Webpage Classification”
Presentation & Talk at 5th International Open Search Symposium #OSSYM23, Geneva, Switzerland and Online, October 4-6, 2023
Link
¹ University of Passau

Jasmin Tietgen¹, Maari Alanko²
“Governance Towards an Open Web Index”
Presentation & Talk at 5th International Open Search Symposium #OSSYM23, Geneva, Switzerland and Online, October 4-6, 2023
Link
¹ Open Search Foundation, ² CSC

Alexander Nussbaumer¹, Sebastian Gürtl¹, Christian Gütl¹, Rohit Kaushik¹, G. Hendriksen²
“Conceptual Design and Implementation of a Prototype Search Application using the Open Web Search Index”
Presentation & Talk at 5th International Open Search Symposium #OSSYM23, Geneva, Switzerland and Online, October 4-6, 2023
Link
¹ Graz University of Technology , ² Radboud University

Christine Plote et al¹
Maustag 2023
Booth with interactive program at the Open Door Event at LRZ, Garching, Germany, 3 October 2023
¹Open Search Foundation

Alexander Bondarenko¹, Maik Fröbe¹, Johannes Kiesel², Ferdinand Schlatt³, Valentin Barriere⁴, Brian Ravenet⁵, Léo Hemamou⁶, Simon Luck⁷, Jan Heinrich Reimer³, Benno Stein², Martin Potthast⁸, Matthias Hagen³
“Overview of Touché 2023: Argument and Causal Retrieval”
Presentation & Talk at CLEF 2023, Thessaloniki, Greece, September 18-21, 2023
¹ WEBIS, ² Bauhaus University Weimar, ³ Friedrich-Schiller-University Jena, ⁴ Centro Nacional de Inteligencia Artificial (CENIA), ⁵ University Paris-Saclay, ⁶ Sanofi R&D, ⁷ University of Bologna, ⁸ University of Leipzig

Janek Bevendorff¹, Ian Borrego-Obrador², Mara Chinea-Ríos², Marc Franco-Salvador², Maik Fröbe³, Annina Heini⁴, Krzysztof Kredens⁴, Maximilian Mayerl⁵, Piotr Pęzik⁴, Martin Potthast⁶, Francisco Rangel², Paolo Rosso⁴, Efstathios Stamatatos⁷, Benno Stein¹, Matti Wiegmann¹, Magdalena Wolska¹, Eva Zangerle⁵
“Overview of PAN 2023: Authorship Verification, Multi-Author Writing Style Analysis, Profiling Cryptocurrency Influencers, and Trigger Detection Condensed Lab Overview”
Presentation & Talk at CLEF 2023, Thessaloniki, Greece, September 18-21, 2023
¹ Bauhaus University Weimar, ² Symanto Research, ³ WEBIS, ⁴ Aston University, ⁵ University of Innsbruck, ⁶ University of Leipzig, ⁷ University of the Aegean,

Michael Granitzer¹
“OpenWebSearch.eu – Building an Open Web Index for an open web search ecosystem”
Keynote at Flexible Query and Answering Conference 2023, Palma de Mallorca, September 5-7, 2023
Link
¹ University of Passau

Maik Fröbe¹, Tim Gollub², Benno Stein², Matthias Hagen³, Martin Potthast⁴
“Clickbait Spoiling”
Presentation & Talk at SemEval2023@ACL23 in Toronto, Canada, July 9-14, 2023
¹ WEBIS, ² Bauhaus University Weimar, ³ Martin-Luther-University Halle-Wittenberg, ⁴ University of Leipzig

Michael Granitzer¹
“Foundation AI, LLMs and Generative AI”
Talk, BDVA Activity Group (AG54), online, 29 June 2023
¹ University of Passau

Michael Granitzer¹
“European Web Crawls and LLMs: the OpenWebSearch.eu Project. ”
Invited Talk at Meta-Forum 2023, Brussles, Belgium, 27 June 2023
Link
¹ University of Passau

Christine Plote, Alexander Decker¹
“Digital Native oder Digital Naive? Was jeder über Google & Co wissen sollte …”
Invited Talk at HAW (Hamburg University of Applied Sciences) for the lecture series “Herausforderungen und Kompetenzen in der der Digitalisierung“, Hamburg, Germany, 7 June 2023
¹ Open Search Foundation

Christine Plote¹
re:publica23
Panel participation at re:publica 2023 conference, Berlin, Germany, 6 June 2023
¹Open Search Foundation

Michael Dinzinger¹
“Distributed and legally compliant crawling in the OpenWebSearch.EU project”
Presentation at IRIXYS workshop, INSA Lyon, France, May 10 2023
¹ University of Passau

Maik Fröbe¹, Lukas Gienapp², Martin Potthast², Matthias Hagen³
“Bootstrapped nDCG Estimation”
Presentation & Talk at ECIR 2023 in Dublin, Ireland, April 2-6, 2023
¹ WEBIS, ² University of Leipzig, ³ Martin-Luther-University Halle-Wittenberg

Maik Fröbe¹, Matti Wiegmann², Nikolay Kolyada², Bastian Grahm³, Theresa Elstner³, Frank Loebe³, Matthias Hagen⁴, Benno Stein², Martin Potthast³
“Continuous Integration for Reproducible Shared Tasks with TIRA.io”
Presentation & Talk at ECIR 2023 in Dublin, Ireland, April 2-6, 2023
¹ WEBIS, ² Bauhaus University Weimar, ³ University of Leipzig, ⁴ Friedrich-Schiller-University Jena

Stefan Voigt¹
“Auf dem Weg zu einer offenen Europäischen Internetsuche – Wie ein offener Webindex Europas digitale Souveränität fördert.”
Webinar at Gesellschaft für Informatik, online, 23 March 2023
¹ Open Search Foundation

Christine Plote¹ , Stefan Voigt¹
Safer Internet Day 2023
Booth at Safer Internet Day Conference 2023, Berlin, Germany, 14 February, 2023
¹Open Search Foundation

Michael Dinzinger¹ , Aurora Gonzalez Vidal²
“Two sister initiatives for a paradigm change in open search and discovery on the internet”
Contributed Lightning Talk at FOSDEM 2023, Brussles, Belgium, February 5, 2023
Link
¹ University of Passau, ² NGI Search

Stefan Voigt¹, Michael Granitzer², Isabell Claus³, Christine Plote¹
“Towards an Open European Internet Search”
Online lecture at DG CONNECT University Online Session, January 19, 2023
Link
¹ Open Search Foundation, ² University of Passau, ³ thinkers.ai

Christine Plote¹, Stefan Voigt¹
“Die Internetsuche auf dem Prüfstand – Warum wir Alternativen zu Google & Co brauchen,
und was jeder von uns tun kann”
Webinar at BayernLab, online, January 11, 2023
Link
¹ Open Search Foundation

2022

Katerina Slaninova¹, Jan Martinovic¹, Vit Vondrak¹
SC 2022
Booth Presentation at SC 2022, Dallas, USA, November 13-18, 2022
¹IT4I

Michael Granitzer¹, Per Öster², Lukas Vojacek³
“Towards an Open Web Search Infrastructure”
Contributed talk at European Open Science Cloud Symposium, Prague, Czech Republic, November 11 2022
Link
¹ University Passau, ² CSC, ³ IT4I

Stefan Voigt¹
Invited Talk
EC High Level Meeting for the future of the internet in Prague, Czech Republic, November 2, 2022
¹ Open Search Foundation

Michael Granitzer¹
“Piloting Open Websearch: OpenWebSearch.eu”
Invited Talk at 4th Open Search Symposium #ossym22, Geneva, Switzerland, October 10 2022
Link
¹ University Passau

Tim Smith¹
“Search, Open Search and Science online”
TED Talk at TEDx Verbier, September 3 2022
Link to Stream
¹ European Organization for Nuclear Research (CERN)