Pablo Castells


2006

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Probabilistic Score Normalization for Rank Aggregation
Miriam Fernández | David Vallet | Pablo Castells
Advances in Information Retrieval, 28th European Conference on IR Research, ECIR 2006, London, UK, April 10-12, 2006, Proceedings

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Using historical data to enhance rank aggregation
Miriam Fernández | David Vallet | Pablo Castells
SIGIR 2006: Proceedings of the 29th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Seattle, Washington, USA, August 6-11, 2006

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CORE: A Tool for Collaborative Ontology Reuse and Evaluation
Miriam Fernández | Iván Cantador | Pablo Castells
Proceedings of 4th International EON Workshop 2006 Evaluation of Ontologies for the Web Co-located with the WWW2006 Edinburgh, UK, May 22, 2006

2007

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Improving Ontology Recommendation and Reuse in WebCORE by Collaborative Assessments
Iván Cantador | Miriam Fernández | Pablo Castells
Proceedings of the Workshop on Social and Collaborative Construction of Structured Knowledge (CKC 2007) at the 16th International World Wide Web Conference (WWW2007) Banff, Canada, May 8, 2007

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Improving Ontology Recommendation and Reuse in WebCORE by Collaborative Assessments
Iván Cantador | Miriam Fernández | Pablo Castells
Proceedings of the Workshop on Social and Collaborative Construction of Structured Knowledge (CKC 2007) at the 16th International World Wide Web Conference (WWW2007) Banff, Canada, May 8, 2007

2010

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A Performance Prediction Approach to Enhance Collaborative Filtering Performance
Alejandro Bellogín | Pablo Castells
Advances in Information Retrieval, 32nd European Conference on IR Research, ECIR 2010, Milton Keynes, UK, March 28-31, 2010. Proceedings

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Inferring user intent in web search by exploiting social annotations
José M. Conde | David Vallet | Pablo Castells
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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Text Retrieval Methods for Item Ranking in Collaborative Filtering
Alejandro Bellogín | Jun Wang | Pablo Castells
Advances in Information Retrieval - 33rd European Conference on IR Research, ECIR 2011, Dublin, Ireland, April 18-21, 2011. Proceedings

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Structured collaborative filtering
Alejandro Bellogín | Jun Wang | Pablo Castells
Proceedings of the 20th ACM Conference on Information and Knowledge Management, CIKM 2011, Glasgow, United Kingdom, October 24-28, 2011

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Self-adjusting hybrid recommenders based on social network analysis
Alejandro Bellogín | Pablo Castells | Iván Cantador
Proceeding of the 34th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2011, Beijing, China, July 25-29, 2011

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On diversifying and personalizing web search
David Vallet | Pablo Castells
Proceeding of the 34th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2011, Beijing, China, July 25-29, 2011

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Intent-oriented diversity in recommender systems
Saul Vargas | Pablo Castells | David Vallet
Proceeding of the 34th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2011, Beijing, China, July 25-29, 2011

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Predicting the Performance of Recommender Systems: An Information Theoretic Approach
Alejandro Bellogín | Pablo Castells | Iván Cantador
Advances in Information Retrieval Theory - Third International Conference, ICTIR 2011, Bertinoro, Italy, September 12-14, 2011. Proceedings

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Effects of Usage-Based Feedback on Video Retrieval: A Simulation-Based Study
David Vallet | Frank Hopfgartner | Joemon M. Jose | Pablo Castells
2011 Volume 29 Issue 2

2012

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Explicit relevance models in intent-oriented information retrieval diversification
Saul Vargas | Pablo Castells | David Vallet
The 35th International ACM SIGIR conference on research and development in Information Retrieval, SIGIR '12, Portland, OR, USA, August 12-16, 2012

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Personalized diversification of search results
David Vallet | Pablo Castells
The 35th International ACM SIGIR conference on research and development in Information Retrieval, SIGIR '12, Portland, OR, USA, August 12-16, 2012

2013

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Diversity and novelty in information retrieval
Rodrygo L. T. Santos | Pablo Castells | Ismail Sengör Altingövde | Fazli Can
The 36th International ACM SIGIR conference on research and development in Information Retrieval, SIGIR '13, Dublin, Ireland - July 28 - August 01, 2013

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Workshop on benchmarking adaptive retrieval and recommender systems: BARS 2013
Pablo Castells | Frank Hopfgartner | Alan Said | Mounia Lalmas
The 36th International ACM SIGIR conference on research and development in Information Retrieval, SIGIR '13, Dublin, Ireland - July 28 - August 01, 2013

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Exploiting the diversity of user preferences for recommendation
Saul Vargas | Pablo Castells
Open research Areas in Information Retrieval, OAIR 2013, Lisbon, Portugal, May 15-17, 2013

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Improving memory-based collaborative filtering by neighbour selection based on user preference overlap
Alejandro Bellogín | Pablo Castells | Iván Cantador
Open research Areas in Information Retrieval, OAIR 2013, Lisbon, Portugal, May 15-17, 2013

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Exploiting Social Networks in Recommendation: a Multi-Domain Comparison
Alejandro Bellogín | Iván Cantador | Pablo Castells | Fernando Díez
Proceedings of the 13th Dutch-Belgian Workshop on Information Retrieval, Delft, The Netherlands, April 26th, 2013

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Bridging memory-based collaborative filtering and text retrieval
Alejandro Bellogín | Jun Wang | Pablo Castells
2013 Volume 16 Issue 6

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Report on the SIGIR 2013 workshop on benchmarking adaptive retrieval and recommender systems
Pablo Castells | Frank Hopfgartner | Alan Said | Mounia Lalmas
2013 Volume 47 Issue 2

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An empirical comparison of social, collaborative filtering, and hybrid recommenders
Alejandro Bellogín | Iván Cantador | Fernando Díez | Pablo Castells | Enrique Chavarriaga
2013 Volume 4 Issue 1

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

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Personalization and Recommendation in Information Access
Juan M. Fernández-Luna | Juan F. Huete | Pablo Castells
2013 Volume 49 Issue 3

2014

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Diversity and novelty in web search, recommender systems and data streams
Rodrygo L. T. Santos | Pablo Castells | Ismail Sengör Altingövde | Fazli Can
Seventh ACM International Conference on Web Search and Data Mining, WSDM 2014, New York, NY, USA, February 24-28, 2014

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Report on the workshop on reproducibility and replication in recommender systems evaluation (RepSys)
Alejandro Bellogín | Pablo Castells | Alan Said | Domonkos Tikk
2014 Volume 48 Issue 1

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Neighbor Selection and Weighting in User-Based Collaborative Filtering: A Performance Prediction Approach
Alejandro Bellogín | Pablo Castells | Iván Cantador
2014 Volume 8 Issue 2

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Introduction to the Special Issue on Diversity and Discovery in Recommender Systems
Pablo Castells | Jun Wang | Rubén Lara | Dell Zhang
2014 Volume 5 Issue 4

2015

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Diversity and Novelty on the Web: Search, Recommendation, and Data Streaming Aspects
Rodrygo L. T. Santos | Pablo Castells | Ismail Sengor Altingovde | Fazli Can
Proceedings of the 24th International Conference on World Wide Web Companion, WWW 2015, Florence, Italy, May 18-22, 2015 - Companion Volume

2017

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A Probabilistic Reformulation of Memory-Based Collaborative Filtering: Implications on Popularity Biases
Rocío Cañamares | Pablo Castells
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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Statistical biases in Information Retrieval metrics for recommender systems
Alejandro Bellogín | Pablo Castells | Iván Cantador
2017 Volume 20 Issue 6

2018

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Recommending Contacts in Social Networks Using Information Retrieval Models
Javier Sanz-Cruzado | Sofía M. Pepa | Pablo Castells
Proceedings of the 5th Spanish Conference on Information Retrieval, CERI 2018, Zaragoza, Spain, June 26-27, 2018

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Should I Follow the Crowd?: A Probabilistic Analysis of the Effectiveness of Popularity in Recommender Systems
Rocío Cañamares | Pablo Castells
The 41st International ACM SIGIR Conference on Research & Development in Information Retrieval, SIGIR 2018, Ann Arbor, MI, USA, July 08-12, 2018

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From the PRP to the Low Prior Discovery Recall Principle for Recommender Systems
Rocío Cañamares | Pablo Castells
The 41st International ACM SIGIR Conference on Research & Development in Information Retrieval, SIGIR 2018, Ann Arbor, MI, USA, July 08-12, 2018

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Structural Novelty and Diversity in Link Prediction
Javier Sanz-Cruzado | Sofía M. Pepa | Pablo Castells
Companion of the The Web Conference 2018 on The Web Conference 2018, WWW 2018, Lyon , France, April 23-27, 2018

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The Dagstuhl Perspectives Workshop on Performance Modeling and Prediction
Nicola Ferro | Norbert Fuhr | Gregory Grefenstette | Joseph A. Konstan | Pablo Castells | Elizabeth M. Daly | Thierry Declerck | Michael D. Ekstrand | Werner Geyer | Julio Gonzalo | Tsvi Kuflik | Krister Lindén | Bernardo Magnini | Jian-Yun Nie | Raffaele Perego | Bracha Shapira | Ian Soboroff | Nava Tintarev | Karin Verspoor | Martijn C. Willemsen | Justin Zobel
2018 Volume 52 Issue 1

2019

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Information Retrieval Models for Contact Recommendation in Social Networks
Javier Sanz-Cruzado | Pablo Castells
Advances in Information Retrieval - 41st European Conference on IR Research, ECIR 2019, Cologne, Germany, April 14-18, 2019, Proceedings, Part I

2020

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Advances in Information Retrieval - 42nd European Conference on IR Research, ECIR 2020, Lisbon, Portugal, April 14-17, 2020, Proceedings, Part II

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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Advances in Information Retrieval - 42nd European Conference on IR Research, ECIR 2020, Lisbon, Portugal, April 14-17, 2020, Proceedings, Part I

Advances in Information Retrieval - 42nd European Conference on IR Research, ECIR 2020, Lisbon, Portugal, April 14-17, 2020, Proceedings, Part I

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Axiomatic Analysis of Contact Recommendation Methods in Social Networks: An IR Perspective
Javier Sanz-Cruzado | Craig Macdonald | Iadh Ounis | Pablo Castells
Advances in Information Retrieval - 42nd European Conference on IR Research, ECIR 2020, Lisbon, Portugal, April 14-17, 2020, Proceedings, Part I

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Agreement and Disagreement between True and False-Positive Metrics in Recommender Systems Evaluation
Elisa Mena-Maldonado | Rocío Cañamares | Pablo Castells | Yongli Ren | Mark Sanderson
Proceedings of the 43rd International ACM SIGIR conference on research and development in Information Retrieval, SIGIR 2020, Virtual Event, China, July 25-30, 2020

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Offline evaluation options for recommender systems
Rocío Cañamares | Pablo Castells | Alistair Moffat
2020 Volume 23 Issue 4

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

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Effective contact recommendation in social networks by adaptation of information retrieval models
Javier Sanz-Cruzado | Pablo Castells | Craig Macdonald | Iadh Ounis
2020 Volume 57 Issue 5

2021

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SIGIR '21: The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval, Virtual Event, Canada, July 11-15, 2021

SIGIR '21: The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval, Virtual Event, Canada, July 11-15, 2021

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Guest editorial: special issue on ECIR 2020
Joemon M. Jose | Emine Yilmaz | João Magalhães | Pablo Castells
2021 Volume 24 Issue 1

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Popularity Bias in False-positive Metrics for Recommender Systems Evaluation
Elisa Mena-Maldonado | Rocío Cañamares | Pablo Castells | Yongli Ren | Mark Sanderson
2021 Volume 39 Issue 3