Javier Parapar


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

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

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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

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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

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

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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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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

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

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

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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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An experimental study of constrained clustering effectiveness in presence of erroneous constraints
M. Eduardo Ares | Javier Parapar | Alvaro Barreiro
2012 Volume 48 Issue 3

2013

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

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

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

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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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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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Computing Neighbourhoods with Language Models in a Collaborative Filtering Scenario
Daniel Valcarce | Javier Parapar | Álvaro Barreiro
Proceedings of the 7th Italian Information Retrieval Workshop, Venezia, Italy, May 30-31, 2016

2017

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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

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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

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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
2017 Volume 53 Issue 5

2018

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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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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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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

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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

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

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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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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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When to stop making relevance judgments? A study of stopping methods for building information retrieval test collections
David E. Losada | Javier Parapar | Alvaro Barreiro
2019 Volume 70 Issue 1

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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
2019 Volume 56 Issue 1

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

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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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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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Using score distributions to compare statistical significance tests for information retrieval evaluation
Javier Parapar | David E. Losada | Manuel A. Presedo Quindimil | Alvaro Barreiro
2020 Volume 71 Issue 1

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Assessing ranking metrics in top-N recommendation
Daniel Valcarce | Alejandro Bellogín | Javier Parapar | Pablo Castells
2020 Volume 23 Issue 4

2021

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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

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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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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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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