Piloting a Cooperative Open Web Search Infrastructure to Support Europe's Digital Sovereignty

Digital, Industry & SpaceHORIZON-RIAID: 101070014
EC Contribution
€85,026
Consortium Size
14 orgs
Start Year
2022
Summary

Web search has become an essential technology and commodity, driving not only future innovations but forming a backbone for our digital economy. Regrettably, currently few non-European gatekeepers control Web search, which creates a biased, one-sided information access centred around economic success rather than the needs of citizens or European values and jurisdiction. This one-sided ecosystem puts pressure on many small Web contributors from science, economy, art, culture, media and society requiring them to optimize their content for a few gatekeepers. A system greatly benefiting the gatekeepers thereby creates a vicious cycle, which leads to locked-in effects and a closed search engine market.To promote an open human-centred search engine market and provide a true choice to users when selecting search engines based on their own preferences, OpenWebSearch.EU proposes to develop and pilot the core of a European Open Web Index (OWI) and the foundation for an open and extensible European open Web Search and Analysis Infrastructure (OWSAI). Our approach is based on four objectives, namely (1) to develop a core suite of search, discovery and analytics services to create, maintain and utilize the OWI; (2) to develop relevant search engine verticals and new search paradigms demonstrating the impact; (3) to establish a network of European HPC-infrastructure, research and business organizations to pilot the OWSAI based on Europes values, principles, legislation, ethics and standards; (4) to stimulate an ecosystem around the OWI. The envisioned infrastructure will not only contribute to Europes sovereignty for navigating and searching the web, it will also empower Europes researchers, innovators and business to systematically tap into the Web as business and innovation resource, without paying huge upfront costs. This will be particularly crucial for future AI innovations and relevant for other European infrastructure like e.g. the European Open Science Cloud, GAIA-X.

Consortium (14)

Project Results (127)

Source: CORDIS, the EU research results database.

Publications (115)
A Legal Framework for the Development and Operation of an Open Web Search Index (LISA)
· 2026DOI
Wendland, M.
Final report on Digital transformation tools for Brickand-Mortar businesses (DTCommerce) development
· 2026DOI
Ziernicky, Alex
Legal Open euRopean wEb iNdex (LOREN) - Project activities and outcomes
· 2026DOI
Johannes, P., and Nebel, M.
NORDLINK Final Report
· 2026DOI
Shehzad, K., and Kokkarachedu, S.
"Overview of the ""Voight-Kampff'' Generative AI Authorship Verification Task at PAN and ELOQUENT 2025 Working notes"
Working Notes of the Conference and Labs of the Evaluation Forum CLEF 2025· 2025
Janek Bevendorff; Yuxia Wang; Jussi Karlgren; Matti Wiegmann; Maik Frobe; Akim Tsivgun; Jinyan Su; Zhuohan Xie; Mervat Abassy; Jonibek Mansurov; Rui Xing; Minh Ngoc Ta; Kareem Ashraf Elozeiri; Tianle Gu
A Charter for Public Interest Internet Search
7th International Open Search Symposium (OSSYM2025)· 2025DOI
Christine Plote, Alexander Nussbaumer
Adaptive Orchestration of Modular Generative Information Access Systems
Proceedings of the 48th International ACM SIGIR Conference on Research and Development in Information Retrieval· 2025DOI
Mohanna Hoveyda, Harrie Oosterhuis, Arjen P. de Vries, Maarten de Rijke, Faegheh Hasibi
Adding Retrieval Augmented Generation to the MOSAIC Framework
7th International Open Search Symposium (OSSYM2025)· 2025DOI
Holz, Felix; Scharf, Daniel; Alexander, Nussbaumer; Gürtl, Sebastian
AKASE - Argumentation Knowledge-Graphs for Advanced Search Engines
· 2025DOI
Al Khatib, K., and Turkstra, F.
Architecting the Datastore for the URL Frontier of OpenWebSearch.eu
7th International Open Search Symposium (OSSYM2025)· 2025DOI
Fathima, Noor A.; Dinzinger, Michael; Granitzer, Michael; Wagner, Andreas
Assessing Legal Risks and Mitigating Challenges in Open Web Indexes
· 2025DOI
Erenli, Kai
Assessing the Reliability of Human and LLM-Based Screening in Systematic Reviews: A Study on First-Time Reviewers
7th International Open Search Symposium (OSSYM2025)· 2025DOI
Sandner, E., Scharf, D., Wautischar, T., Jakovljevic, I., Simniceanu, A., Fontana, L., Henriques, A., Wagner, A., & Gütl, C.
Automating License-Aware Full-Text Retrieval for Systematic Reviews: An End-To-End Scalable System to Reduce Reviewer Workload
7th International Open Search Symposium (OSSYM2025)· 2025DOI
Zhuk, D., Sandner, E., Jakovljevic, I., Simniceanu, A., Fontana, L., Henriques, A., Wagner, A., and Gütl, C.
Axioms for Retrieval-Augmented Generation
Proceedings of the 2025 International ACM SIGIR Conference on Innovative Concepts and Theories in Information Retrieval (ICTIR)· 2025DOI
Jan Heinrich Merker, Maik Fröbe, Benno Stein, Martin Potthast, Matthias Hagen
CIFFIL Service report
· 2025DOI
Spinque
Corpus Subsampling: Estimating the Effectiveness of Neural Retrieval Models on Large Corpora
Lecture Notes in Computer Science, Advances in Information Retrieval· 2025DOI
Maik Fröbe, Andrew Parry, Harrisen Scells, Shuai Wang, Shengyao Zhuang, Guido Zuccon, Martin Potthast, Matthias Hagen
Efficient Session Search using Topical Index Shards
· 2025DOI
Hendriksen, G., Hiemstra, D., and de Vries, A. P.
EXAION Final Report – September 2025 Creators
· 2025DOI
Deleuze, G.
Extracting and Utilizing Structured Data from the Open Web Index
7th International Open Search Symposium (OSSYM2025)· 2025DOI
Caspari, L., Dinzinger, M., Granitzer, M., & Mitrovic, J.
FINAL REPORT: Open Maps Mobile Search (OMMS)
· 2025DOI
E Foundation
FUN Final Report Focused Neural Crawling
· 2025DOI
Tonellotto, N., MacAvaney, S., and Pezzuti, F.
Graph Embeddings to Empower Entity Retrieval
Information Retrieval Research· 2025DOI
Emma Gerritse, Faegheh Hasibi, Arjen De Vries
ImageCLEF 2025: Multimedia Retrieval in Medical, Social Media and Content Recommendation Applications
Lecture Notes in Computer Science, Advances in Information Retrieval· 2025DOI
Bogdan Ionescu, Henning Müller, Dan-Cristian Stanciu, Ahmad Idrissi-Yaghir, Ahmedkhan Radzhabov, Alba García Seco de Herrera, Alexandra Andrei, Andrea Storås, Asma Ben Abacha, Benjamin Bracke, Benjamin Lecouteux, Benno Stein, Cécile Macaire, Christoph M. Friedrich, Cynthia Sabrina Schmidt, Diandra Fabre, Didier Schwab, Dimitar Dimitrov, Emmanuelle Esperança-Rodier, Gabriel Constantin, Helmut Becker, Hendrik Damm, Henning Schäfer, Ivan Rodkin, Ivan Koychev, Johannes Kiesel, Johannes Rückert, Josep Malvehy, Liviu-Daniel Ștefan, Louise Bloch, Martin Potthast, Maximilian Heinrich, Michael A. Riegler, Mihai Dogariu, Noel Codella, Pål Halvorsen, Preslav Nakov, Raphael Brüngel, Roberto Andres Novoa, Rocktim Jyoti Das, Steven A. Hicks, Sushant Gautam, Tabea M. G. Pakull, Vajira Thambawita, Vassili Kovalev, Wen-Wai Yim, Zhuohan Xie
In a Few Words: Comparing Weak Supervision and LLMs for Short Query Intent Classification
Proceedings of the 48th International ACM SIGIR Conference on Research and Development in Information Retrieval· 2025DOI
Daria Alexander, Arjen P. de Vries
In-Browser Agentic Web: a Decentralized Approach to Information Access
7th International Open Search Symposium (OSSYM2025)· 2025DOI
Zerhoudi, Saber; Granitzer, Michael
Large-Scale Graph Visualisation of Open Web Index and its Evolution in Time
7th International Open Search Symposium (OSSYM2025)· 2025DOI
Kateřina Slaninová; Pavlína Smolková
Learning Effective Representations for Retrieval Using Self-Distillation with Adaptive Relevance Margins
Proceedings of the 2025 International ACM SIGIR Conference on Innovative Concepts and Theories in Information Retrieval (ICTIR)· 2025DOI
Lukas Gienapp; Niklas Deckers; Martin Potthast; Harrisen Scells
Learning Effective Representations for Retrieval Using Self-Distillation with Adaptive Relevance Margins
Proceedings of the 2025 International ACM SIGIR Conference on Innovative Concepts and Theories in Information Retrieval (ICTIR)· 2025DOI
Lukas Gienapp, Niklas Deckers, Martin Potthast, Harrisen Scells
License Aware Web Crawling for Open Search AI (LAW4OSAI) - Final Report
· 2025DOI
Braun, Daniel; Waltl, Bernhard; Cevc, Baltasar
OpenWebSearch.eu - Building an Open Web Index on EuroHPC JU Infrastructures
Proceedings of the Second EuroHPC user day, Procedia Computer Science· 2025DOI
Granitzer, M.; Hayek, M.; Heineking, S.; Hendriksen, G.A.W.; Golasowski, M.; Dinzinger, M.; Zerhoudi, S.
Overview of PAN 2025: Generative AI Detection, Multilingual Text Detoxification, Multi-author Writing Style Analysis, and Generative Plagiarism Detection
Lecture Notes in Computer Science, Advances in Information Retrieval· 2025DOI
Janek Bevendorff, Daryna Dementieva, Maik Fröbe, Bela Gipp, André Greiner-Petter, Jussi Karlgren, Maximilian Mayerl, Preslav Nakov, Alexander Panchenko, Martin Potthast, Artem Shelmanov, Efstathios Stamatatos, Benno Stein, Yuxia Wang, Matti Wiegmann, Eva Zangerle
Overview of Touché 2025: Argumentation Systems
Lecture Notes in Computer Science, Experimental IR Meets Multilinguality, Multimodality, and Interaction· 2025DOI
Johannes Kiesel, Çağrı Çöltekin, Marcel Gohsen, Sebastian Heineking, Maximilian Heinrich, Maik Fröbe, Tim Hagen, Mohammad Aliannejadi, Sharat Anand, Tomaž Erjavec, Matthias Hagen, Matyáš Kopp, Nikola Ljubešić, Katja Meden, Nailia Mirzakhmedova, Vaidas Morkevičius, Harrisen Scells, Moritz Wolter, Ines Zelch, Martin Potthast, Benno Stein
Rank-DistiLLM: Closing the Effectiveness Gap Between Cross-Encoders and LLMs for Passage Re-ranking
Lecture Notes in Computer Science, Advances in Information Retrieval· 2025DOI
Ferdinand Schlatt, Maik Fröbe, Harrisen Scells, Shengyao Zhuang, Bevan Koopman, Guido Zuccon, Benno Stein, Martin Potthast, Matthias Hagen
Ranking Generated Answers
Lecture Notes in Computer Science, Advances in Information Retrieval· 2025DOI
Sebastian Heineking, Jonas Probst, Daniel Steinbach, Martin Potthast, Harrisen Scells
Score-Fitted Indexes and Constant Length Indexes for Information Retrieval
Proceedings of the 48th International ACM SIGIR Conference on Research and Development in Information Retrieval· 2025DOI
Djoerd Hiemstra
Segmentation of Argumentative Texts by Key Statements for Argument Mining from the Web
Proceedings of the 12th Argument mining Workshop· 2025DOI
Ines Zelch, Matthias Hagen, Benno Stein, Johannes Kiesel
Set-Encoder: Permutation-Invariant Inter-passage Attention for Listwise Passage Re-ranking with Cross-Encoders
Lecture Notes in Computer Science, Advances in Information Retrieval· 2025DOI
Ferdinand Schlatt, Maik Fröbe, Harrisen Scells, Shengyao Zhuang, Bevan Koopman, Guido Zuccon, Benno Stein, Martin Potthast, Matthias Hagen
Supporting Vertical Web Search and Customized Search Applications with the Modular and Open Framework MOSAIC
Proceedings of the 2nd International Workshop on Open Web Search Co-located With the 47th European Conference on Information Retrieval (ECIR 2025)· 2025
Sebastian Gürtl, Alexander Nussbaumer, Christian Gütl
Team OpenWebSearch at LongEval: Using Historical Data for Scientific Search
Working Notes of the Conference and Labs of the Evaluation Forum CLEF 2025· 2025
Daria Alexander, Maik Fröbe, Gijs Hendriksen, Matthias Hagen, Djoerd Hiemstra, Martin Potthast, and Arjen P. de Vries
The German Commons – 154 Billion Tokens of Openly Licensed Text for German Language Models
· 2025DOI
Lukas Gienapp, Christopher Schröder, Stefan Schweter, Christopher Akiki, Ferdinand Schlatt, Arden Zimmermann, Phillipe Genêt, and Martin Potthast
The Two Paradigms of LLM Detection: Authorship Attribution vs. Authorship Verification
Findings of the Association for Computational Linguistics: ACL 2025· 2025DOI
Janek Bevendorff, Matti Wiegmann, Emmelie Richter, Martin Potthast, Benno Stein
The Viability of Crowdsourcing for RAG Evaluation
Proceedings of the 48th International ACM SIGIR Conference on Research and Development in Information Retrieval· 2025DOI
Lukas Gienapp, Tim Hagen, Maik Fröbe, Matthias Hagen, Benno Stein, Martin Potthast, Harrisen Scells
TILDE - Trustworthy Access to Knowledge from the Indexed Web
· 2025DOI
Jantscher, M., Fadljevic, L., Manuela, R., and Kröll, M.
Using The Open Web Index To Create New Search Applications For Research.fi
7th International Open Search Symposium (OSSYM2025)· 2025DOI
Theodoropoulos, Jason; Kesäniemi, Joonas
UXSim: Towards a Hybrid User Search Simulation
Proceedings of the 34th ACM International Conference on Information and Knowledge Management· 2025DOI
Saber Zerhoudi, Michael Granitzer
VERITAS project final activity report
· 2025DOI
Bisconti, P.
Web-Scale Retrieval Experimentation with chatnoir-pyterrier
Lecture Notes in Computer Science, Advances in Information Retrieval· 2025DOI
Jan Heinrich Merker, Janek Bevendorff, Maik Fröbe, Tim Hagen, Harrisen Scells, Matti Wiegmann, Benno Stein, Matthias Hagen, Martin Potthast
WebFAQ: A Multilingual Collection of Natural Q&A Datasets for Dense Retrieval
Proceedings of the 48th International ACM SIGIR Conference on Research and Development in Information Retrieval· 2025DOI
Michael Dinzinger, Laura Caspari, Kanishka Ghosh Dastidar, Jelena Mitrović, Michael Granitzer
A Dataset of GDPR Compliant NER for Privacy Policies
6th International Open Search Symposium (OSSYM2024)· 2024DOI
Darji, Harshil; Becher, Stefan; Mitrovic, Jelena; Gerl, Armin; Granitzer, Michael
A Longitudinal Study of Content Control Mechanisms
Companion Proceedings of the ACM Web Conference 2024· 2024DOI
Michael Dinzinger, Michael Granitzer
A Survey of Web Content Control for Generative AI
Proceedings of the First International Workshop on Open Web Search (WOWS 2024)· 2024DOI
Michael Dinzinger; Florian Heß; Michael Granitzer
A User Study on the Acceptance of Native Advertising in Generative IR
Proceedings of the 2024 Conference on Human Information Interaction and Retrieval (CHIIR '24)· 2024DOI
Ines Zelch, Matthias Hagen and Martin Potthast
Advancing Multimedia Retrieval in Medical, Social Media and Content Recommendation Applications with ImageCLEF 2024
Advances in Information Retrieval. ECIR 2024. Lecture Notes in Computer Science· 2024DOI
Ionescu, B. et al.
An Open Source Implementation of Web Clustering Algorithms for Selective Search
· 2024DOI
Hendriksen, G., Hiemstra, D., & de Vries, A.
Analyzing Adversarial Attacks on Sequence-to-Sequence Relevance Models
Advances in Information Retrieval. ECIR 2024. Lecture Notes in Computer Science· 2024DOI
Parry, A., Fröbe, M., MacAvaney, S., Potthast, M., Hagen, M.
Architecting the Opensearch Service at CERN For OpenWebSearch.EU
· 2024DOI
Fathima, N. A., Granitzer, M., Dinzinger, M., & Wagner, A.
Beyond Benchmarks: Evaluating Embedding Model Similarity for Retrieval Augmented Generation Systems
· 2024DOI
Caspari, Laura; Dastidar, Kanishka Ghosh; Zerhoudi, Saber; Mitrovic, Jelena; Granitzer, Michael
Creating Explainable Summaries for Long Scientific Documents using Large Language Models
6th International Open Search Symposium (OSSYM2024)· 2024DOI
Frank, Sarah; Schäffer, Sebastian; Wagner, Andreas; Steinmaurer, Alexander
Detecting Generated Native Ads in Conversational Search
Companion Proceedings of the ACM Web Conference 2024· 2024DOI
Sebastian Schmidt, Ines Zelch, Janek Bevendorff, Benno Stein, Matthias Hagen, Martin Potthast
Enriching Science Search with the Open Search Framework MOSAIC
· 2024DOI
Nussbaumer, A., Gürtl, S., Honeder, J., Hecking, T., & Gütl, C.
Evaluating Generative Ad Hoc Information Retrieval
SIGIR '24: Proceedings of the 47th International ACM SIGIR Conference on Research and Development in Information Retrieval· 2024DOI
Gienapp, Lukas; Scells, Harrisen; Deckers, Niklas; Bevendorff, Janek; Wang, Shuai; Kiesel, Johannes; Syed, Shahbaz; Fröbe, Maik; Zuccon, Guido; Stein, Benno; Hagen, Matthias; Potthast, Martin
Federated Data Infrastructure for the Open Web Search
· 2024DOI
Fathima, N. A., Golasowski, M., Granitzer, M., Wagner, A., Ariyo, C., Hendriksen, G., Truckenbrodt, J., Mankinen, K., Dinzinger, M., Karlsson, M., Hayek, M., Moiras, S., Vojacek, L., Hachinger, S., & Martinovič, J.
Generative Agents Navigating Digital Libraries
Lecture Notes in Computer Science, Sustainability and Empowerment in the Context of Digital Libraries· 2024DOI
Saber Zerhoudi, Michael Granitzer
Impact of Tokenization Techniques on URL Classification
6th International Open Search Symposium (OSSYM2024)· 2024DOI
Al-Maamari, Mohammed; Mahmoud, Istaiti; Zerhoudi, Saber; Dinzinger, Michael; Granitzer, Michael; Mitrović, Jelena
Investigating the Effects of Sparse Attention on Cross-Encoders
Advances in Information Retrieval. ECIR 2024. Lecture Notes in Computer Science· 2024DOI
Schlatt, F., Fröbe, M., Hagen, M.
Is Google Getting Worse? A Longitudinal Investigation of SEO Spam in Search Engines
Advances in Information Retrieval. ECIR 2024. Lecture Notes in Computer Science· 2024DOI
Bevendorff, J., Wiegmann, M., Potthast, M., Stein, B.
Manipulating Embeddings of Stable Diffusion Prompts
Proceedings of the Thirty-Third International Joint Conference on Artificial Intelligence IJCAI '24· 2024DOI
Niklas Deckers, Julia Peters, Martin Potthast
Market Potential Assessment of a European Open Web Index Exploring the Economic and Societal Impact
· 2024
Daniel Nowakowski, Lara Kerner, Nils Zimmermann
Objective Argument Summarization in Search
Lecture Notes in Computer Scienced, Proceedings of Robust Argumentation Machines RATIO 2024· 2024DOI
Timon Ziegenbein; Shahbaz Syed; Martin Potthast; Henning Wachsmuth
Overview of PAN 2024: Multi-Author Writing Style Analysis, Multilingual Text Detoxification, Oppositional Thinking Analysis, and Generative AI Authorship Verification
Advances in Information Retrieval. ECIR 2024. Lecture Notes in Computer Science· 2024DOI
Bevendorff et al.
Overview of the “Voight-Kampff” Generative AI Authorship Verification Task at PAN and ELOQUENT 2024
Working Notes of the Conference and Labs of the Evaluation Forum (CLEF 2024)· 2024
Janek Bevendorff, Matti Wiegmann, Jussi Karlgren, Luise Dürlich, Evangelia Gogoulou, Aarne Talman, Efstathios Stamatatos, Martin Potthast, Benno Stein
Overview of Touché 2024: Argumentation Systems
Advances in Information Retrieval. ECIR 2024. Lecture Notes in Computer Science· 2024DOI
Kiesel, J. et al.
OWLer: A Distributed and Collaborative Open Web Crawler
6th International Open Search Symposium (OSSYM2024)· 2024DOI
Dinzinger, M., Granitzer, M., Mitrović, J., Zerhoudi, S.
OWS project Open Console final report
· 2024DOI
Overmeer, Marcus; Nguyễn, Phương-Thảo
PersonaRAG: Enhancing Retrieval-Augmented Generation Systems with User-Centric Agents
· 2024DOI
Saber Zerhoudi, Michael Granitzer
ReNeuIR at SIGIR 2024: The Third Workshop on Reaching Efficiency in Neural Information Retrieval
Proceedings of the 47th International ACM SIGIR Conference on Research and Development in Information Retrieval· 2024DOI
Maik Fröbe; Joel Mackenzie; Bhaskar Mitra 0001; Franco Maria Nardini; Martin Potthast
Report on the 1st International Workshop on Open Web Search (WOWS 2024) at ECIR 2024
ACM SIGIR Forum· 2024DOI
Farzana, S.M.; Fröbe, M.; Granitzer, M.; Hendriksen, G.A.W.; Hiemstra, D.; Potthast, M.; Vries, A.P. de; Zerhoudi, S.
Resources for Combining Teaching and Research in Information Retrieval Coursework
Proceedings of the 47th International ACM SIGIR Conference on Research and Development in Information Retrieval· 2024DOI
Maik Fröbe, Harrisen Scells, Theresa Elstner, Christopher Akiki, Lukas Gienapp, Jan Heinrich Reimer, Sean MacAvaney, Benno Stein, Matthias Hagen, Martin Potthast
Simulating Follow-up Questions in Conversational Search
Advances in Information Retrieval. ECIR 2024. Lecture Notes in Computer Science· 2024DOI
Kiesel, J., Gohsen, M., Mirzakhmedova, N., Hagen, M., Stein, B.
Systematic Evaluation of Neural Retrieval Models on the Touché 2020 Argument Retrieval Subset of BEIR
Proceedings of the 47th International ACM SIGIR Conference on Research and Development in Information Retrieval· 2024DOI
Nandan Thakur; Luiz Bonifacio; Maik Fröbe; Alexander Bondarenko 0001; Ehsan Kamalloo; Martin Potthast; Matthias Hagen; Jimmy Lin
The First International Workshop on Open Web Search (WOWS)
Goharian, N.; Tonellotto, N.; He, Y. (ed.), Advances in Information Retrieval: 46th European Conference on Information Retrieval, ECIR 2024, Glasgow, UK, March 24–28, 2024, Proceedings, Part V, pp. 426-431· 2024DOI
Farzana, S.M.; Fröbe, M.; Granitzer, M.; Hendriksen, G.A.W.; Hiemstra, D.; Potthast, M.; Zerhoudi, S.
The Open Web Index
Advances in Information Retrieval: 46th European Conference on Information Retrieval, ECIR 2024, Proceedings, Part V· 2024DOI
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 0001
The Touché23-ValueEval Dataset for Identifying Human Values behind Arguments
Proceedings of the 2024 Joint International Conference on Computational Linguistics, Language Resources and Evaluation (LREC-COLING 2024)· 2024DOI
Nailia Mirzakhmedova, Johannes Kiesel, Milad Alshomary, Maximilian Heinrich, Nicolas Handke, Xiaoni Cai, Valentin Barriere, Doratossadat Dastgheib, Omid Ghahroodi, MohammadAli SadraeiJavaheri, Ehsaneddin Asgari, Lea Kawaletz, Henning Wachsmuth, Benno Stei
Weighted AUReC: Handling Skew in Shard Map Quality Estimation for Selective Search
Advances in Information Retrieval. ECIR 2024. Lecture Notes in Computer Science· 2024DOI
Hendriksen, G., Hiemstra, D., de Vries, A.P.
Who Will Evaluate the Evaluators? Exploring the Gen-IR User Simulation Space
Lecture Notes in Computer Science, Experimental IR Meets Multilinguality, Multimodality, and Interaction· 2024DOI
Johannes Kiesel, Marcel Gohsen, Nailia Mirzakhmedova, Matthias Hagen, Benno Stein
A Comprehensive Dataset for Webpage Classification
Proceedings of 5th International Open Search Symposium (OSSYM2023)· 2023DOI
Al-Maamari, M., Istaiti, M., Zerhoudi, S., Dinzinger, M., Granitzer, M., & Mitrović, J.
An Empirical Comparison of Web Content Extraction Algorithms
SIGIR 2023 - Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval· 2023DOI
Bevendorff, Janek; Kiesel, Johannes; Gupta, Sanket; Stein, Benno
Bootstrapped nDCG Estimation in the Presence of Unjudged Documents
Advances in Information Retrieval. 45th European Conference on IR Research (ECIR 2023)· 2023DOI
Maik Fröbe, Lukas Gienapp, Martin Potthast, and Matthias Hagen
Challenges of Index Exchange for Search Engine Interoperability
Proceedings of 5th International Open Search Symposium (OSSYM2023)· 2023DOI
Hiemstra, D., Hendriksen, G., Kamphuis, C., & de Vries, A. P.
Citance-Contextualized Summarization of Scientific Papers
Findings of the Association for Computational Linguistics: EMNLP 2023· 2023DOI
Syed, Shahbaz; Hakimi, Ahmad Dawar; Al-Khatib, Khalid; Potthast, Martin
Commercialized Generative AI: A Critical Study of the Feasibility and Ethics of Generating Native Advertising Using Large Language Models in Conversational Web Search
Proceedings of 5th International Open Search Symposium (OSSYM2023)· 2023DOI
Zelch, I., Hagen, M., and Potthast, M.
Conceptual Design and Implementation of a Prototype Search Application using the Open Web Search Index
Proceedings of 5th International Open Search Symposium (OSSYM2023)· 2023DOI
Nussbaumer, A., Kaushik, R., Hendriksen, G., Gürtl, S., & Gütl, C.
Continuous Integration for Reproducible Shared Tasks with TIRA.io
Advances in Information Retrieval. 45th European Conference on IR Research (ECIR 2023)· 2023DOI
Maik Fröbe, Matti Wiegmann, Nikolay Kolyada, Bastian Grahm, Theresa Elstner, Frank Loebe, Matthias Hagen, Benno Stein, and Martin Potthast
Cross-Market Product-Related Question Answering
SIGIR 2023 - Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval· 2023DOI
Ghasemi, Negin; Aliannejadi, Mohammad; Bonab, Hamed; Kanoulas, Evangelos; de Vries, Arjen P.; Allan, James; Hiemstra, Djoerd
Generating Natural Language Queries for More Effective Systematic Review Screening Prioritisation
SIGIR-AP '23: Proceedings of the Annual International ACM SIGIR Conference on Research and Development in Information Retrieval in the Asia Pacific Region· 2023DOI
Shuai Wang; Harrisen Scells; Bevan Koopman; Martin Potthast; Guido Zuccon
Geoparsing at Web-scale - Challenges and Opportunities
GeoExT 2023: First International Workshop on Geographic Information Extraction from Texts at ECIR 2023 (CEUR Workshop Proceedings)· 2023
Farzana, Sheikh Mastura; Hecking, Tobias
Impact and development of an Open Web Index for Open Web Search
JASIST· 2023DOI
Granitzer Michael; Voigt Stefan; Noor Afshan Fathima; Golasowski Martin; Guetl Christian; Hecking Tobias; Gijs Hendriksen; Djoerd Hiemstra; Jan Martinovič; Jelena Mitrović; Izidor Mlakar; Stavros Moiras; Alexander Nussbaumer; Per Öster; Martin Potthast; Marjana Senčar Srdič; Sharikadze Megi; Kateřina Slaninová; Benno Stein; Arjen P. de Vries; Vít Vondrák; Andreas Wagner; Saber Zerhoudi
Indicative Summarization of Long Discussions
Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing· 2023DOI
Syed, Shahbaz; Schwabe, Dominik; Al-Khatib, Khalid; Potthast, Martin
MMEAD: MS MARCO Entity Annotations and Disambiguations
SIGIR 2023 - Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval· 2023DOI
Kamphuis, Chris; Lin, Jimmy; Lin, Aileen; de Vries, Arjen P.; Yang, Siwen; Hasibi, Faegheh
On Stance Detection in Image Retrieval for Argumentation
SIGIR 2023 - Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval· 2023DOI
Carnot, Miriam Louise; Schreieder, Tobias; Heinemann, Lorenz; Kiesel, Johannes; Braker, Jan; Fröbe, Maik; Potthast, Martin; Stein, Benno
Open Web Search at LongEval 2023: Reciprocal Rank Fusion on Automatically Generated Query Variants
· 2023
Maik Fröbe, Gijs Hendriksen, Arjen Paul de Vries, and Martin Potthast
Overview of PAN 2023: Authorship Verification, Multi-Author Writing Style Analysis, Profiling Cryptocurrency Influencers, and Trigger Detection
Experimental IR Meets Multilinguality, Multimodality, and Interaction. CLEF 2023. Lecture Notes in Computer Science· 2023DOI
Janek Bevendorff, Ian Borrego-Obrador, Mara Chinea-Ríos, Marc Franco-Salvador, Maik Fröbe, Annina Heini, Krzysztof Kredens, Maximilian Mayerl, Piotr Pęzik, Martin Potthast, Francisco Rangel, Paolo Rosso, Efstathios Stamatatos, Benno Stein, Matti Wiegmann,
Overview of Touché 2023: Argument and Causal Retrieval
Experimental IR Meets Multilinguality, Multimodality, and Interaction. CLEF 2023. Lecture Notes in Computer Science· 2023DOI
Alexander Bondarenko, Maik Fröbe, Johannes Kiesel, Ferdinand Schlatt, Valentin Barriere, Brian Ravenet, Léo Hemamou, Simon Luck, Jan Heinrich Reimer, Benno Stein, Martin Potthast, and Matthias Hagen
OWler: Preliminary results for building a Collaborative Open Web Crawler
Proceedings of 5th International Open Search Symposium (OSSYM2023)· 2023DOI
Dinzinger, M., Al-Maamari, M., Zerhoudi, S., Istaiti, M., Mitrović, J., & Granitzer, M.
Product Spam On YouTube: a Case Study
Proceedings of 5th International Open Search Symposium (OSSYM2023)· 2023DOI
Bevendorff, J., Wiegmann, M., Potthast, M., & Stein, B.
Prototyping Open Web Search Applications with TIRA: A Case Study in Research-oriented Teaching
Proceedings of 5th International Open Search Symposium (OSSYM2023)· 2023DOI
Fröbe, M., Elstner, T., Scells, H., Stein, B., & Potthast, M.
Pybool_ir: A Toolkit for Domain-Specific Search Experiments
SIGIR 2023 - Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval· 2023DOI
Scells, Harrisen; Potthast, Martin
SemEval-2023 Task 5: Clickbait Spoiling
Proceedings of 17th International Workshop on Semantic Evaluation (SemEval 2023)· 2023DOI
Maik Fröbe, Tim Gollub, Benno Stein, Matthias Hagen, and Martin Potthast
Smooth Operators for Effective Systematic Review Queries
SIGIR 2023 - Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval· 2023DOI
Scells, Harrisen; Schlatt, Ferdinand; Potthast, Martin
The Archive Query Log: Mining Millions of Search Result Pages of Hundreds of Search Engines from 25 Years of Web Archives
SIGIR 2023 - Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval· 2023DOI
Reimer, Jan Heinrich; Gienapp, Lukas; Schmidt, Sebastian; Scells, Harrisen; Fröbe, Maik; Stein, Benno; Hagen, Matthias; Potthast, Martin
The Information Retrieval Experiment Platform
SIGIR 2023 - Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval· 2023DOI
Fröbe, Maik; Deckers, Niklas; Stein, Benno; Reimer, Jan Heinrich; Reich, Simon; Hagen, Matthias; MacAvaney, Sean; Bevendorff, Janek; Potthast, Martin
Trigger Warnings: Bootstrapping a Violence Detector for Fan Fiction
Findings of the Association for Computational Linguistics: EMNLP 2023· 2023DOI
Magdalena Wolska, Matti Wiegmann, Christopher Schröder, Ole Borchardt, Benno Stein, and Martin Potthast
Understanding and Mitigating Cognitive Bias during Web Search
Proceedings of 5th International Open Search Symposium (OSSYM2023)· 2023DOI
Hitzginger, S., Nussbaumer, A., Gütl, C., & Ruß-Baumann, C.
UNFair: Search Engine Manipulation, Undetectable by Amortized Inequity
FAccT 2023 - Proceedings of the 2023 ACM Conference on Fairness, Accountability, and Transparency· 2023DOI
De Jonge, Tim; Hiemstra, Djoerd
Designing an Integration Concept of the Provenance Verification Indicator into Open Web Search Engines
"Proceedings of the 5th International Open Search Symposium #ossym2022"· 2022DOI
Nussbaumer, Alexander; Ebner, Sylvia M.; Gütl, Christian; Munnelly, Gary; Spillane, Brendan; Conlan, Owen; Plote, Christine; Frank, Anton
Deliverables (11)
Other Results (1)
Periodic Reporting for period 1 - OpenWebSearch.EU (Piloting a Cooperative Open Web Search Infrastructure to Support Europe's Digital Sovereignty)