David E. Losada

2026

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Query Harmfulness Prediction (QHP): A New Challenge for Safer Retrieval Systems.
Xiana Carrera|Marcos Fernández-Pichel|David E. Losada
Advances in Information Retrieval - 48th European Conference on Information Retrieval, ECIR 2026, Delft, The Netherlands, March 29 - April 2, 2026, Proceedings, Part II
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On the Viability of Exploiting Large Language Models for Misinformation Annotation.
Pablo Landrove|Marcos Fernández-Pichel|David E. Losada
Advances in Information Retrieval - 48th European Conference on Information Retrieval, ECIR 2026, Delft, The Netherlands, March 29 - April 2, 2026, Proceedings, Part II

2025

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Generating Effective Health-Related Queries for Promoting Reliable Search Results.
Xiana Carrera|Marcos Fernández-Pichel|David E. Losada
Proceedings of the 48th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2025, Padua, Italy, July 13-18, 2025
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Query Smarter, Trust Better? Exploring Search Behaviours for Verifying News Accuracy.
David Elsweiler|Samy Ateia|Markus Bink|Gregor Donabauer|Marcos Fernández-Pichel|Alexander Frummet|Udo Kruschwitz|David E. Losada|Bernd Ludwig|Selina Meyer|Noel Pascual-Presa
Proceedings of the 48th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2025, Padua, Italy, July 13-18, 2025

2024

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Overview of eRisk 2024: Early Risk Prediction on the Internet.
Javier Parapar|Patricia Martín-Rodilla|David E. Losada|Fabio Crestani
Experimental IR Meets Multilinguality, Multimodality, and Interaction - 15th International Conference of the CLEF Association, CLEF 2024, Grenoble, France, September 9-12, 2024, Proceedings, Part II
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Overview of eRisk 2024: Early Risk Prediction on the Internet (Extended Overview).
Javier Parapar|Patricia Martín-Rodilla|David E. Losada|Fabio Crestani
Working Notes of the Conference and Labs of the Evaluation Forum (CLEF 2024), Grenoble, France, 9-12 September, 2024.
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eRisk 2024: Depression, Anorexia, and Eating Disorder Challenges.
Javier Parapar|Patricia Martín-Rodilla|David E. Losada|Fabio Crestani
Advances in Information Retrieval - 46th European Conference on Information Retrieval, ECIR 2024, Glasgow, UK, March 24-28, 2024, Proceedings, Part V

2023

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Overview of eRisk 2023: Early Risk Prediction on the Internet.
Javier Parapar|Patricia Martín-Rodilla|David E. Losada|Fabio Crestani
Experimental IR Meets Multilinguality, Multimodality, and Interaction - 14th International Conference of the CLEF Association, CLEF 2023, Thessaloniki, Greece, September 18-21, 2023, Proceedings
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Overview of eRisk at CLEF 2023: Early Risk Prediction on the Internet (Extended Overview).
Javier Parapar|Patricia Martín-Rodilla|David E. Losada|Fabio Crestani
Working Notes of the Conference and Labs of the Evaluation Forum (CLEF 2023), Thessaloniki, Greece, September 18th to 21st, 2023.
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eRisk 2023: Depression, Pathological Gambling, and Eating Disorder Challenges.
Javier Parapar|Patricia Martín-Rodilla|David E. Losada|Fabio Crestani
Advances in Information Retrieval - 45th European Conference on Information Retrieval, ECIR 2023, Dublin, Ireland, April 2-6, 2023, Proceedings, Part III

2022

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Overview of eRisk 2022: Early Risk Prediction on the Internet.
Javier Parapar|Patricia Martín-Rodilla|David E. Losada|Fabio Crestani
Experimental IR Meets Multilinguality, Multimodality, and Interaction - 13th International Conference of the CLEF Association, CLEF 2022, Bologna, Italy, September 5-8, 2022, Proceedings
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Overview of eRisk 2022: Early Risk Prediction on the Internet (Extended Overview).
Javier Parapar|Patricia Martín-Rodilla|David E. Losada|Fabio Crestani
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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eRisk 2022: Pathological Gambling, Depression, and Eating Disorder Challenges.
Javier Parapar|Patricia Martín-Rodilla|David E. Losada|Fabio Crestani
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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CiTIUS at the TREC 2022 Health Misinformation Track.
Marcos Fernández-Pichel|Manuel de Prada Corral|David E. Losada|Juan Carlos Pichel
Proceedings of the Thirty-First Text REtrieval Conference, TREC 2022, online, November 15-19, 2022

2021

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Comparing Traditional and Neural Approaches for Detecting Health-Related Misinformation.
Marcos Fernández-Pichel|David E. Losada|Juan Carlos Pichel|David Elsweiler
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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Overview of eRisk 2021: Early Risk Prediction on the Internet.
Javier Parapar|Patricia Martín-Rodilla|David E. Losada|Fabio Crestani
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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Overview of eRisk at CLEF 2021: Early Risk Prediction on the Internet (Extended Overview).
Javier Parapar|Patricia Martín-Rodilla|David E. Losada|Fabio Crestani
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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Reliability Prediction for Health-Related Content: A Replicability Study.
Marcos Fernández-Pichel|David E. Losada|Juan Carlos Pichel|David Elsweiler
Advances in Information Retrieval - 43rd European Conference on IR Research, ECIR 2021, Virtual Event, March 28 - April 1, 2021, Proceedings, Part II
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eRisk 2021: Pathological Gambling, Self-harm and Depression Challenges.
Javier Parapar|Patricia Martín-Rodilla|David E. Losada|Fabio Crestani
Advances in Information Retrieval - 43rd European Conference on IR Research, ECIR 2021, Virtual Event, March 28 - April 1, 2021, Proceedings, Part II
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CiTIUS at the TREC 2021 Health Misinformation Track.
Marcos Fernández-Pichel|Manuel de Prada Corral|David E. Losada|Juan Carlos Pichel|Pablo Gamallo
Proceedings of the Thirtieth Text REtrieval Conference, TREC 2021, online, November 15-19, 2021

2020

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Using score distributions to compare statistical significance tests for information retrieval evaluation.
Javier Parapar|David E. Losada|Manuel A. Presedo Quindimil|Alvaro Barreiro
Journal of the Association for Information Science and Technology (JASIST) 2020 Volume 71 Issue 1
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Overview of eRisk 2020: Early Risk Prediction on the Internet.
David E. Losada|Fabio Crestani|Javier Parapar
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 eRisk at CLEF 2020: Early Risk Prediction on the Internet (Extended Overview).
David E. Losada|Fabio Crestani|Javier Parapar
Working Notes of CLEF 2020 - Conference and Labs of the Evaluation Forum, Thessaloniki, Greece, September 22-25, 2020.
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eRisk 2020: Self-harm and Depression Challenges.
David E. Losada|Fabio Crestani|Javier Parapar
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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CiTIUS at the TREC 2020 Health Misinformation Track.
Marcos Fernández-Pichel|David E. Losada|Juan Carlos Pichel|David Elsweiler
Proceedings of the Twenty-Ninth Text REtrieval Conference, TREC 2020, Virtual Event [Gaithersburg, Maryland, USA], November 16-20, 2020.

2019

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Experimental IR Meets Multilinguality, Multimodality, and Interaction - 10th International Conference of the CLEF Association, CLEF 2019, Lugano, Switzerland, September 9-12, 2019, Proceedings
Conference and Labs of the Evaluation Forum (CLEF) 2019
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Working Notes of CLEF 2019 - Conference and Labs of the Evaluation Forum, Lugano, Switzerland, September 9-12, 2019.
Conference and Labs of the Evaluation Forum (CLEF) 2019
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When to stop making relevance judgments? A study of stopping methods for building information retrieval test collections.
David E. Losada|Javier Parapar|Alvaro Barreiro
Journal of the Association for Information Science and Technology (JASIST) 2019 Volume 70 Issue 1
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Report on CLEF 2019.
Martin Braschler|Linda Cappellato|Fabio Crestani|Nicola Ferro|Gundula Heinatz Bürki|David E. Losada|Henning Müller|Andreas Rauber|Jacques Savoy
SIGIR Forum 2019 Volume 53 Issue 2
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Overview of eRisk 2019 Early Risk Prediction on the Internet.
David E. Losada|Fabio Crestani|Javier Parapar
Experimental IR Meets Multilinguality, Multimodality, and Interaction - 10th International Conference of the CLEF Association, CLEF 2019, Lugano, Switzerland, September 9-12, 2019, Proceedings
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Overview of eRisk at CLEF 2019: Early Risk Prediction on the Internet (extended overview).
David E. Losada|Fabio Crestani|Javier Parapar
Working Notes of CLEF 2019 - Conference and Labs of the Evaluation Forum, Lugano, Switzerland, September 9-12, 2019.
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Early Detection of Risks on the Internet: An Exploratory Campaign.
David E. Losada|Fabio Crestani|Javier Parapar
Advances in Information Retrieval - 41st European Conference on IR Research, ECIR 2019, Cologne, Germany, April 14-18, 2019, Proceedings, Part II

2018

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Cost-effective construction of Information Retrieval test collections.
David E. Losada|Javier Parapar|Alvaro Barreiro
Proceedings of the 5th Spanish Conference on Information Retrieval, CERI 2018, Zaragoza, Spain, June 26-27, 2018
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Building Python-Based Topologies for Massive Processing of Social Media Data in Real Time.
Rodrigo Martínez-Castaño|Juan Carlos Pichel|David E. Losada
Proceedings of the 5th Spanish Conference on Information Retrieval, CERI 2018, Zaragoza, Spain, June 26-27, 2018
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Overview of eRisk: Early Risk Prediction on the Internet.
David E. Losada|Fabio Crestani|Javier Parapar
Experimental IR Meets Multilinguality, Multimodality, and Interaction - 9th International Conference of the CLEF Association, CLEF 2018, Avignon, France, September 10-14, 2018, Proceedings
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Overview of eRisk: Early Risk Prediction on the Internet (Extended Lab Overview).
David E. Losada|Fabio Crestani|Javier Parapar
Working Notes of CLEF 2018 - Conference and Labs of the Evaluation Forum, Avignon, France, September 10-14, 2018.
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A Micromodule Approach for Building Real-Time Systems with Python-Based Models: Application to Early Risk Detection of Depression on Social Media.
Rodrigo Martínez-Castaño|Juan Carlos Pichel|David E. Losada|Fabio Crestani
Advances in Information Retrieval - 40th European Conference on IR Research, ECIR 2018, Grenoble, France, March 26-29, 2018, Proceedings

2017

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Multi-armed bandits for adjudicating documents in pooling-based evaluation of information retrieval systems.
David E. Losada|Javier Parapar|Alvaro Barreiro
Information Processing and Management 2017 Volume 53 Issue 5
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eRISK 2017: CLEF Lab on Early Risk Prediction on the Internet: Experimental Foundations.
David E. Losada|Fabio Crestani|Javier Parapar
Experimental IR Meets Multilinguality, Multimodality, and Interaction - 8th International Conference of the CLEF Association, CLEF 2017, Dublin, Ireland, September 11-14, 2017, Proceedings
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CLEF 2017 eRisk Overview: Early Risk Prediction on the Internet: Experimental Foundations.
David E. Losada|Fabio Crestani|Javier Parapar
Working Notes of CLEF 2017 - Conference and Labs of the Evaluation Forum, Dublin, Ireland, September 11-14, 2017.

2016

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Injecting Multiple Psychological Features into Standard Text Summarisers.
David E. Losada|Javier Parapar
Proceedings of the 4th Spanish Conference on Information Retrieval, Granada, Spain, June 14-16, 2016
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A Test Collection for Research on Depression and Language Use.
David E. Losada|Fabio Crestani
Experimental IR Meets Multilinguality, Multimodality, and Interaction - 7th International Conference of the CLEF Association, CLEF 2016, Évora, Portugal, September 5-8, 2016, Proceedings

2013

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A Machine Learning Approach for Subjectivity Classification Based on Positional and Discourse Features.
José M. Chenlo|David E. Losada
Multidisciplinary Information Retrieval - 6th Information Retrieval Facility Conference, IRFC 2013, Limassol, Cyprus, October 7-9, 2013. Proceedings

2012

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ECIR 2012: 34th european conference on information retrieval research.
Ricardo Baeza-Yates|Mari-Carmen Marcos|Arjen P. de Vries|Hugo Zaragoza|Berkant Barla Cambazoglu|Vanessa Murdock|Alvaro Barreiro|David E. Losada|Ronny Lempel|Fabrizio Silvestri|Mounia Lalmas
SIGIR Forum 2012 Volume 46 Issue 2
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Effective sentence retrieval based on query-independent evidence.
Ronald T. Fernández|David E. Losada
Information Processing and Management 2012 Volume 48 Issue 6
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A Learning-Based Approach for the Identification of Sexual Predators in Chat Logs.
Javier Parapar|David E. Losada|Alvaro Barreiro
CLEF 2012 Evaluation Labs and Workshop, Online Working Notes, Rome, Italy, September 17-20, 2012

2011

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Extending the language modeling framework for sentence retrieval to include local context.
Ronald T. Fernández|David E. Losada|Leif Azzopardi
Discover Computing 2011 Volume 14 Issue 4
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Effective and efficient polarity estimation in blogs based on sentence-level evidence.
José M. Chenlo|David E. Losada
Proceedings of the 20th ACM Conference on Information and Knowledge Management, CIKM 2011, Glasgow, United Kingdom, October 24-28, 2011
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Seeding simulated queries with user-study data forpersonal search evaluation.
David Elsweiler|David E. Losada|José Carlos Toucedo|Ronald T. Fernández
Proceeding of the 34th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2011, Beijing, China, July 25-29, 2011

2010

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Statistical query expansion for sentence retrieval and its effects on weak and strong queries.
David E. Losada
Discover Computing 2010 Volume 13 Issue 5
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Improving sentence retrieval with an importance prior.
Leif Azzopardi|Ronald T. Fernández|David E. Losada
Proceeding of the 33rd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2010, Geneva, Switzerland, July 19-23, 2010
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Where to start filtering redundancy?: a cluster-based approach.
Ronald T. Fernández|Javier Parapar|David E. Losada|Alvaro Barreiro
Proceeding of the 33rd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2010, Geneva, Switzerland, July 19-23, 2010

2009

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Using opinion-based features to boost sentence retrieval.
Ronald T. Fernández|David E. Losada
Proceedings of the 18th ACM Conference on Information and Knowledge Management, CIKM 2009, Hong Kong, China, November 2-6, 2009
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Formulating Good Queries for Prior Art Search.
José Carlos Toucedo|David E. Losada
Multilingual Information Access Evaluation I. Text Retrieval Experiments, 10th Workshop of the Cross-Language Evaluation Forum, CLEF 2009, Corfu, Greece, September 30 - October 2, 2009, Revised Selected Papers
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University of Santiago de Compostela at CLEF-IP09.
José Carlos Toucedo|David E. Losada
Working Notes for CLEF 2009 Workshop co-located with the 13th European Conference on Digital Libraries (ECDL 2009) , Corfù, Greece, September 30 - October 2, 2009.
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Compression-based document length prior for language models.
Javier Parapar|David E. Losada|Alvaro Barreiro
Proceedings of the 32nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2009, Boston, MA, USA, July 19-23, 2009

2008

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An analysis on document length retrieval trends in language modeling smoothing.
David E. Losada|Leif Azzopardi
Discover Computing 2008 Volume 11 Issue 2
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'Show me more': Incremental length summarisation using novelty detection.
Simon O. Sweeney|Fabio Crestani|David E. Losada
Information Processing and Management 2008 Volume 44 Issue 2
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Assessing multivariate Bernoulli models for information retrieval.
David E. Losada|Leif Azzopardi
ACM Transactions on Information Systems (TOIS) 2008 Volume 26 Issue 3
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Revisiting the relationship between document length and relevance.
David E. Losada|Leif Azzopardi|Mark Baillie
Proceedings of the 17th ACM Conference on Information and Knowledge Management, CIKM 2008, Napa Valley, California, USA, October 26-30, 2008
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Novelty as a form of contextual re-ranking: efficient KLD models and mixture models.
Ronald T. Fernández|David E. Losada
Proceedings of the 2nd International Conference on Information Interaction in Context, IIiX 2008, London, UK, October 14-17, 2008

2007

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Summarisation and Novelty: An Experimental Investigation.
Simon O. Sweeney|Fabio Crestani|David E. Losada
Advances in Information Retrieval, 29th European Conference on IR Research, ECIR 2007, Rome, Italy, April 2-5, 2007, Proceedings
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Novelty detection using local context analysis.
Ronald T. Fernández|David E. Losada
SIGIR 2007: Proceedings of the 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Amsterdam, The Netherlands, July 23-27, 2007
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Highly Frequent Terms and Sentence Retrieval.
David E. Losada|Ronald T. Fernández
String Processing and Information Retrieval, 14th International Symposium, SPIRE 2007, Santiago, Chile, October 29-31, 2007, Proceedings

2006

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Introduction to the special issue on the 27th European Conference on Information Retrieval Research.
David E. Losada|Juan M. Fernández-Luna
Discover Computing 2006 Volume 9 Issue 4
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An Efficient Computation of the Multiple-Bernoulli Language Model.
Leif Azzopardi|David E. Losada
Advances in Information Retrieval, 28th European Conference on IR Research, ECIR 2006, London, UK, April 10-12, 2006, Proceedings

2005

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Advances in Information Retrieval, 27th European Conference on IR Research, ECIR 2005, Santiago de Compostela, Spain, March 21-23, 2005, Proceedings
European Conference on Advances in Information Retrieval (ECIR) 2005
doi dblp
Report on the 27th European conference on information retrieval research (ECIR 2005).
David E. Losada|Juan M. Fernández-Luna
SIGIR Forum 2005 Volume 39 Issue 1

2004

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Negations and Document Length in Logical Retrieval.
David E. Losada|Alvaro Barreiro
String Processing and Information Retrieval, 11th International Conference, SPIRE 2004, Padova, Italy, October 5-8, 2004, Proceedings

2003

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Embedding Term Similarity and Inverse Document Frequency into a Logical Model of Information.
David E. Losada|Alvaro Barreiro
Journal of the Association for Information Science and Technology (JASIST) 2003 Volume 54 Issue 4
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Propositional Logic Representations for Documents and Queries: A Large-Scale Evaluation.
David E. Losada|Alvaro Barreiro
Advances in Information Retrieval, 25th European Conference on IR Research, ECIR 2003, Pisa, Italy, April 14-16, 2003, Proceedings

2001

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An Homogeneous Framework to Model Relevance Feedback.
David E. Losada|Alvaro Barreiro
SIGIR 2001: Proceedings of the 24th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, September 9-13, 2001, New Orleans, Louisiana, USA

2000

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Implementing Document Ranking within a Logical Framework.
David E. Losada|Alvaro Barreiro
Seventh International Symposium on String Processing and Information Retrieval, SPIRE 2000, A Coruña, Spain, September 27-29, 2000

1999

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Using a Belief Revision Operator for Document Ranking in Extended Boolean Models.
David E. Losada|Alvaro Barreiro
SIGIR '99: Proceedings of the 22nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, August 15-19, 1999, Berkeley, CA, USA