Javier Parapar

2026

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Beyond questions: Leveraging ColBERT for keyphrase search.
Jorge Gabín|Javier Parapar|Craig Macdonald
Information Processing and Management 2026 Volume 63 Issue 2
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LLM-Assisted Pseudo-Relevance Feedback.
David Otero|Javier Parapar
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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eRisk 2026: Tasks on Symptoms Ranking, Contextual and Conversational Approaches for Early Mental Health Detection.
Anxo Pérez|Javier Parapar|Xi Wang|Fabio Crestani
Advances in Information Retrieval - 48th European Conference on Information Retrieval, ECIR 2026, Delft, The Netherlands, March 29 - April 2, 2026, Proceedings, Part IV

2025

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TalkDep: Clinically Grounded LLM Personas for Conversation-Centric Depression Screening.
Xi Wang|Anxo Pérez|Javier Parapar|Fabio Crestani
Proceedings of the 34th ACM International Conference on Information and Knowledge Management, CIKM 2025, Seoul, Republic of Korea, November 10-14, 2025
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ReDSM5: A Reddit Dataset for DSM-5 Depression Detection.
Eliseo Bao|Anxo Pérez|Javier Parapar
Proceedings of the 34th ACM International Conference on Information and Knowledge Management, CIKM 2025, Seoul, Republic of Korea, November 10-14, 2025
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Overview of eRisk 2025: Early Risk Prediction on the Internet.
Javier Parapar|Anxo Pérez|Xi Wang|Fabio Crestani
Experimental IR Meets Multilinguality, Multimodality, and Interaction - 16th International Conference of the CLEF Association, CLEF 2025, Madrid, Spain, September 9-12, 2025, Proceedings
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Overview of eRisk 2025: Early Risk Prediction on the Internet (Extended Overview).
Javier Parapar|Anxo Pérez|Xi Wang|Fabio Crestani
Working Notes of the Conference and Labs of the Evaluation Forum, CLEF 2025, Madrid, Spain, 9-12 September 2025.
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Leveraging Retrieval-Augmented Generation for Keyphrase Synonym Suggestion.
Jorge Gabín|Javier Parapar
Advances in Information Retrieval - 47th European Conference on Information Retrieval, ECIR 2025, Lucca, Italy, April 6-10, 2025, Proceedings, Part II
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Towards Reliable Testing for Multiple Information Retrieval System Comparisons.
David Otero|Javier Parapar|Álvaro Barreiro
Advances in Information Retrieval - 47th European Conference on Information Retrieval, ECIR 2025, Lucca, Italy, April 6-10, 2025, Proceedings, Part II
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Towards Efficient and Explainable Hate Speech Detection via Model Distillation.
Paloma Piot|Javier Parapar
Advances in Information Retrieval - 47th European Conference on Information Retrieval, ECIR 2025, Lucca, Italy, April 6-10, 2025, Proceedings, Part II
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MindWell: A Conversational Agent for Professional Depression Screening on Social Media.
Eliseo Bao|Anxo Pérez|Javier Parapar
Advances in Information Retrieval - 47th European Conference on Information Retrieval, ECIR 2025, Lucca, Italy, April 6-10, 2025, Proceedings, Part V
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eRisk 2025: Contextual and Conversational Approaches for Depression Challenges.
Javier Parapar|Anxo Pérez|Xi Wang|Fabio Crestani
Advances in Information Retrieval - 47th European Conference on Information Retrieval, ECIR 2025, Lucca, Italy, April 6-10, 2025, Proceedings, Part V
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Limitations of Automatic Relevance Assessments with Large Language Models for Fair and Reliable Retrieval Evaluation.
David Otero|Javier Parapar|Álvaro Barreiro
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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How Discriminative Are Your Qrels? How To Study the Statistical Significance of Document Adjudication Methods.
David Otero|Javier Parapar|Nicola Ferro
Proceedings of the 32nd ACM International Conference on Information and Knowledge Management, CIKM 2023, Birmingham, United Kingdom, October 21-25, 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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Keyword Embeddings for Query Suggestion.
Jorge Gabín|M. Eduardo Ares|Javier Parapar
Advances in Information Retrieval - 45th European Conference on Information Retrieval, ECIR 2023, Dublin, Ireland, April 2-6, 2023, Proceedings, Part I
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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
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PsyProf: A Platform for Assisted Screening of Depression in Social Media.
Anxo Pérez|Paloma Piot-Perez-Abadin|Javier Parapar|Álvaro Barreiro
Advances in Information Retrieval - 45th European Conference on Information Retrieval, ECIR 2023, Dublin, Ireland, April 2-6, 2023, Proceedings, Part III
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BDI-Sen: A Sentence Dataset for Clinical Symptoms of Depression.
Anxo Pérez|Javier Parapar|Álvaro Barreiro|Silvia Lopez-Larrosa
Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2023, Taipei, Taiwan, July 23-27, 2023

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

2021

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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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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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Diverse User Preference Elicitation with Multi-Armed Bandits.
Javier Parapar|Filip Radlinski
WSDM '21, The Fourteenth ACM International Conference on Web Search and Data Mining, Virtual Event, Israel, March 8-12, 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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Assessing ranking metrics in top-N recommendation.
Daniel Valcarce|Alejandro Bellogín|Javier Parapar|Pablo Castells
Discover Computing 2020 Volume 23 Issue 4
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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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Novel and Diverse Recommendations by Leveraging Linear Models with User and Item Embeddings.
Alfonso Landin|Javier Parapar|Álvaro Barreiro
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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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

2019

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Efficient query-by-example spoken document retrieval combining phone multigram representation and dynamic time warping.
Paula Lopez-Otero|Javier Parapar|Alvaro Barreiro
Information Processing and Management 2019 Volume 56 Issue 1
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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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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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PRIN: A Probabilistic Recommender with Item Priors and Neural Models.
Alfonso Landin|Daniel Valcarce|Javier Parapar|Álvaro Barreiro
Advances in Information Retrieval - 41st European Conference on IR Research, ECIR 2019, Cologne, Germany, April 14-18, 2019, Proceedings, Part I
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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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Query Expansion as a Matrix Factorization Problem: Extended Abstract.
Daniel Valcarce|Javier Parapar|Álvaro Barreiro
Proceedings of the 5th Spanish Conference on Information Retrieval, CERI 2018, Zaragoza, Spain, June 26-27, 2018
doi dblp
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.

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.
doi dblp
Combining Top-N Recommenders with Metasearch Algorithms.
Daniel Valcarce|Javier Parapar|Álvaro Barreiro
Proceedings of the 40th International ACM SIGIR Conference on Research and Development in Information Retrieval, Shinjuku, Tokyo, Japan, August 7-11, 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
doi dblp
Additive Smoothing for Relevance-Based Language Modelling of Recommender Systems.
Daniel Valcarce|Javier Parapar|Álvaro Barreiro
Proceedings of the 4th Spanish Conference on Information Retrieval, Granada, Spain, June 14-16, 2016
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Efficient Pseudo-Relevance Feedback Methods for Collaborative Filtering Recommendation.
Daniel Valcarce|Javier Parapar|Alvaro Barreiro
Advances in Information Retrieval - 38th European Conference on IR Research, ECIR 2016, Padua, Italy, March 20-23, 2016. Proceedings
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Language Models for Collaborative Filtering Neighbourhoods.
Daniel Valcarce|Javier Parapar|Alvaro Barreiro
Advances in Information Retrieval - 38th European Conference on IR Research, ECIR 2016, Padua, Italy, March 20-23, 2016. Proceedings

2015

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A Study of Smoothing Methods for Relevance-Based Language Modelling of Recommender Systems.
Daniel Valcarce|Javier Parapar|Alvaro Barreiro
Advances in Information Retrieval - 37th European Conference on IR Research, ECIR 2015, Vienna, Austria, March 29 - April 2, 2015. Proceedings

2013

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Relevance-based language modelling for recommender systems.
Javier Parapar|Alejandro Bellogín|Pablo Castells|Alvaro Barreiro
Information Processing and Management 2013 Volume 49 Issue 4

2012

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An experimental study of constrained clustering effectiveness in presence of erroneous constraints.
M. Eduardo Ares|Javier Parapar|Alvaro Barreiro
Information Processing and Management 2012 Volume 48 Issue 3
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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
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Language Modelling of Constraints for Text Clustering.
Javier Parapar|Alvaro Barreiro
Advances in Information Retrieval - 34th European Conference on IR Research, ECIR 2012, Barcelona, Spain, April 1-5, 2012. Proceedings

2011

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Promoting Divergent Terms in the Estimation of Relevance Models.
Javier Parapar|Alvaro Barreiro
Advances in Information Retrieval Theory - Third International Conference, ICTIR 2011, Bertinoro, Italy, September 12-14, 2011. Proceedings

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
doi dblp
Blog snippets: a comments-biased approach.
Javier Parapar|Jorge López-Castro|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
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University of Lugano at TREC 2010.
Mostafa Keikha|Parvaz Mahdabi|Shima Gerani|Giacomo Inches|Javier Parapar|Mark James Carman|Fabio Crestani
Proceedings of The Nineteenth Text REtrieval Conference, TREC 2010, Gaithersburg, Maryland, USA, November 16-19, 2010

2009

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Evaluation of Text Clustering Algorithms with N-Gram-Based Document Fingerprints.
Javier Parapar|Alvaro Barreiro
Advances in Information Retrieval, 31th European Conference on IR Research, ECIR 2009, Toulouse, France, April 6-9, 2009. Proceedings
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Revisiting N-Gram Based Models for Retrieval in Degraded Large Collections.
Javier Parapar|Ana Freire|Alvaro Barreiro
Advances in Information Retrieval, 31th European Conference on IR Research, ECIR 2009, Toulouse, France, April 6-9, 2009. Proceedings
doi dblp
Avoiding Bias in Text Clustering Using Constrained K-means and May-Not-Links.
M. Eduardo Ares|Javier Parapar|Alvaro Barreiro
Advances in Information Retrieval Theory, Second International Conference on the Theory of Information Retrieval, ICTIR 2009, Cambridge, UK, September 10-12, 2009, Proceedings
doi dblp
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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Winnowing-based text clustering.
Javier Parapar|Alvaro Barreiro
Proceedings of the 17th ACM Conference on Information and Knowledge Management, CIKM 2008, Napa Valley, California, USA, October 26-30, 2008