Research / Investigación
Associate Professor at Universidad Autónoma de Madrid (UAM). Previously, I held a post-doctoral research grant associated to the Centrum Wiskunde & Informatica (CWI), where I worked with Prof. Arjen de Vries. In November 2012, I defended my PhD dissertation under the supervision of Prof. Pablo Castells and Dr. Iván Cantador at Universidad Autónoma de Madrid. The title of my thesis was "Recommender system performance evaluation and prediction: an information retrieval perspective".
Profesor Titular en la Universidad Autónoma de Madrid (UAM). Con anterioridad fui investigador post-doctoral asociado al Centrum Wiskunde & Informatica (CWI) donde trabajé con Prof. Arjen de Vries. En Noviembre de 2012 defendí mi tesis doctoral bajo la supervisión del Prof. Pablo Castells y Dr. Iván Cantador en la Universidad Autónoma de Madrid. El título de mi tesis era "Evaluación y predicción de eficacia en Sistemas de Recomendación: una perspectiva desde Recuperación de Información".
Information Access Group at CWI
Information Retrieval Group at UAM
Publications / Publicaciones
See here a (hopefully) updated list; or here for a dynamic page based on DBLP information here a version from my group's webpage.
Research Topics / Líneas de Investigación
Recommender Evaluation / Evaluación de sistemas de recomendación
Performance Prediction / Predicción de Eficacia
Recommender Systems / Sistemas de Recomendación
Information Retrieval / Recuperación de Información
Work in progress / Trabajo en curso
- Robustness measurements applied to Recommender Systems
- Exploiting similarities in Recommender Systems
- Fairness and reproducibility in evaluation of Recommender Systems
Plazas y contratos
2023 - : Associate Professor / Profesor Titular4
2021 - 2023: Associate Professor / Profesor Contratado Doctor3
2019 - 2021: Associate Professor / Profesor Contratado Doctor3 (interino)
2014 - 2019: Assistant Professor / Profesor Ayudante Doctor2
2013: Post-doctoral Marie Curie fellow (funded by ERCIM) / Becario post-doctoral con una beca Marie Curie (financiada por ERCIM)
2010 - 2012: Teaching Assistant / Profesor Ayudante 1
2009-2010: FPI-UAM Grant / Beca FPI-UAM
2007-2009: Scholarship of EU-funded FP6 project / Becario asociado a proyecto
Projects / Proyectos
- Interventions towards Fair Information Access Systems, IFIAS (Intervenciones hacia sistemas de acceso a la información equitativos) (September 2023 - August 2026)
National Project (PID2022-139131NB-I00), as co-IP
- Spanish Thematic Research Network in Recommender Systems (June 2023 - May 2025)
National Project (RED2022-134302-T).
- Beyond static recommendation: fairness, interaction and transparency (June 2020 - May 2023)
National Project (PID2019-108965GB-I00)
- Diseño y desarrollo de un sistema de recomendación avanzado para turismo inteligente (January 2020 - June 2021)
Project led by MyStreetBook / Programa de Fomento de la Transferencia de Conocimiento
Premio Andalucía de Turismo 2020 a la categoría de Formación e Investigación Turística
Ganador de la Competición de Turismo Rural de la World Tourism Organization (UNWTO) en la categoría de innovación
Entrevista en Artesfera (RNE)
- Evaluación de la plataforma tecnológica de la compañía para el proyecto Patrimonios Interconectados América en Madrid (January 2020 - December 2020)
Project led by Uground / Programa de Fomento de la Transferencia de Conocimiento
- AmerMad-CM: América en Madrid. Patrimonios Interconectados e Impacto Turístico en La Comunidad de Madrid (January 2020 - December 2022)
National Project (H2019/HUM-5694)
- MyStreetBook: Software de recomendación para turismo inteligente (March 2017 - July
2017 2019)
Project led by MyStreetBook/PUM Studio
- Recomendación en medios sociales: contexto, diversidad y sesgo algorítmico (January 2017 - December 2019)
National Project (TIN2016-80630-P)
- MedeTect: Detección de Medicamentos y Asistente de Tratamientos (May 2015 - April 2016)
Project funded by Fundación Vodafone España and Fundación de la Universidad Autónoma de Madrid
- Expert2IC: Sistema experto big data de inteligencia colectiva para la detección de patrones de comportamiento y perfiles en redes sociales (July 2014 - December 2014)
Project led by Jobssy, funded by CDTI
- Voxpopuli: Efficient reputation analysis, propagation and recommendation in social network environments (January 2014 - December 2016)
National Project (TIN2013-47090-C3-2)
- Predict: Novelty, diversity, context and time: new dimensions in next-generation information retrieval and recommender systems (January 2012 - December 2013)
National Project (TIN2011-28538-C02-01) Coordinated project with University of Granada, led by the IR Group at Autónoma University of Madrid.
The Predict project addresses the extension of information access technologies towards the incorporation of new dimensions, namely novelty and diversity, subjectivity, context, and time, as essential aspects of information access effectiveness and tasks that are not captured in traditional Information Retrieval (IR) paradigms and models, in order to enhance the quality, effectiveness, and user satisfaction with retrieval systems, in further ways than state of the art technologies and theories in the field currently procure. The research focuses on these problems within the specific scope of personalized Information Retrieval and Recommender Systems.
- ReSHeT: Recommender Systems in the Social Web: Heterogeneity and Time Dimension (January 2011 - December 2011)
National Project (CCG10-UAM/TIC-5877)
- MA2VICMR: Mejorando el acceso, el análisis y la visibilidad de la información y los contenidos multilingües y multimedia en red para la CM (January 2010 - December 2013)
National Project (S2009TIC-1542)
- RIM3: Information Retrieval on different media based on multidimensional models: relevance, novelty, personalization and context (December 2008 - December 2011)
National Project (TIN-2008-06566-C04-02) Coordinated project with University of Granada (coordinator) and University of A Coruña.
This project tackles the IR problem from a multidimensional perspective. Besides the dimension of relevance, with the project researches the development of advanced capabilities for novelty detection, redundancy filtering, subtopic detection, personalization and context-based retrieval.
- i3media (January 2007 - January 2010)
National Project (CENIT-2007-1012)
Technologies for Automated Intelligent Audiovisual Content Creation and Management.
- Thematic Network on Semantic Web (November 2006 - November 2008)
National Project (TSI-2006-26928-E)
The Spanish Network of Semantic Web promotes the exchange and transfer of knowledge on semantic-based knowledge technologies among and between national research groups and industrial partners.
- MESH: Multimedia sEmantic Syndication for enHanced news services (March 2006 - March 2009)
EU/FP6 Integrated Project (FP6-027685)
MESH aims to change users' access to news services, by the provision of tools and services which enable the user to consume personalised multimedia summaries, aggregated from multiple multimedia sources.
Committees / Comités
Summary:
- Journals: AAI, ACM TIIS, ACM TIST, ACM TOIS, ACM TOIT, ACM TORS (as member of the editorial board 2024-now), ACM TSC, ACM TWEB, AI Magazine, AIRE, ASOC, ASTES, BDMA, CSUR, DAMI, DMKD, DDNS, EPJ, ESWA, ExSy, Frontiers (as member of the specialty section on Recommender Systems 2021-now), IEEE Access, IEEE TKDE, IET SEN, IJAIT, IJCIS, IJAR, IJHCS, InfoSys, INS, IPM (as member of the editorial board 2019-2024), IRJ (as member of the editorial board 2014-2023), ITT (as member of the editorial board 2020-now), JASIST, JCST, JDSA, JIIS, JIPS, JIS, JIT, JUCS, JWS, Knosys, LRE, MMSI, MPE, NCAA, OIR, PLOS ONE, RecSys Review (as member of the editorial board), SCICO, TNSE, UMUAI
- Conferences: AAAI (2021), ACM CIKM (2011, 2012, 2013, 2021 as resource track PC, 2023 as applied research track PC, 2024 as senior full track), ACM HT (2013, 2015, 2017, 2018, 2022 as general co-chair), ACM MM (2016), ACM RecSys (2013, 2014, 2015, 2016 as proceedings chair and Senior PC, 2017, 2018 as workshop chair and Senior PC, 2019 as tutorial chair, Senior PC, demo, 2020 as Senior PC, 2021 in reproducibility track, 2022 as challenge PC, late-breaking results and demos, reproducibility track, 2023 as PC, reproducibility track, and LBR, 2024 as workshop chair, PC, reproducibility track), ACM SIGIR (2018, 2020, 2021 as proceedings chair, 2022 as DEI chair, Doctoral Consortium, reproducibility track, 2024 as senior full track, senior short track, resource and reproducibility track), CERI (2014, 2018), CIRCLE (2020, 2022), DSRS-Turing (2019), EC-WEB (2013, 2014, 2015), ECIR (2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 as PC and demo, 2020, 2021 as PC, short, and reproducibility, 2022 as workshop PC, reproducibility track, full papers, 2023 as reproducibility track, full papers, 2024 as full papers), ECIS (2017), eKNOW (2014), FLAIRS-RecSys (2015, 2016, 2017, 2019, 2020), i-KNOW (2013, 2014, 2015), ICTIR (2015), ICWE (2022 as tutorial chair), IIiX (2014), IJCAI (2019, 2020), ISMIR (2015, 2016, 2017, 2018, 2019), KDIR (2014), SAC (2017, 2018, 2019, 2020, 2021, 2022), SISREC (2024), SocialCom (2014), TVX (2015), UMAP (2014, 2018, 2019 as PC, doctoral, demo, 2020 as PC and demo, 2021 as track chair and demo, 2022 as general co-chair, 2023, 2021 as track chair and doctoral track), WWW (2016, 2017, 2018, 2019, 2020, 2022, 2023)
- Workshops: APEx-UI (2022), APRESW (2010), Bias (2020, 2021, 2022, 2023), CaRR (2014, 2015), CBRecSys (2014), CERI (2010), CrowdSens (2014), DECAT (2015), ExUm (2020, 2021), HetRec (2011), IEEE Smart-PDS (2019), KaRS (2019, 2022, 2023), KEESOS (2011), MSM (2013, 2014, 2016), NewsIR (2019), NRA (2014), NRS (2013), ORSUM (2019), PERSPECTIVES (2022), RAMSS (2012, 2013), RecSys Challenge (2014, 2016, 2017), RecSysKTL (2017), RecTour (2023), REDD (2014), RepSys (2013), RUE (2012), SERecSys (2017), SeRSy (2013), SMUC (2011), SOAP (2017), SP (2014), THUM (2017)
- Others: AENOR, ANEP, EQA, FWO, LIT, NWO, SNSF
In detail:
- Member of the editorial board of the ACM Transactions on Recommender Systems (TORS)
- Member of the senior program committee for the Full research track of the 33rd ACM Conference on Information and Knowledge Management (CIKM 2024)
- Member of the program committee of the I Spanish Conference on Recommender Systems (SISREC 2024)
- Expert evaluator for the Linz Institute of Technology (LIT) initiative
- Member of the program committee of the International Workshop on Transparent Personalization Methods based on Heterogeneous Personal Data (ExUM) at the 32nd Conference on User Modeling, Adaptation and Personalization (UMAP 2024)
- Member of the program committee for Doctoral Consortium at the 32nd Conference on User Modeling, Adaptation and Personalization (UMAP 2024)
- Track co-chair (on Research Methods and Reproducibility) of the 32nd Conference on User Modeling, Adaptation and Personalization (UMAP 2024)
- Member of the program committee for the Reproducibility track of the 18th ACM Conference on Recommender Systems (RecSys 2024)
- Member of the program committee for the Research paper track of the 18th ACM Conference on Recommender Systems (RecSys 2024)
- Workshop chair of the 18th ACM Conference on Recommender Systems (RecSys 2024)
- Member of the program committee for the Resource and Reproducibility track of the ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2024)
- Member of the senior program committee for the Short paper track of the ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2024)
- Member of the senior program committee for the Full paper track of the ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2024)
- Member of the program committee of the 46th European Conference on Information Retrieval (ECIR 2024)
- Reviewer of the EPJ Data Science (EPJ)
- Member of the program committee of the Workshop on Recommenders in Tourism 2023 (RecTour 2023) at the 17th ACM Conference on Recommender Systems (RecSys 2023)
- Member of the program committee of the 5th Knowledge-aware and ConversationalRecSys Workshop (KaRS 2023) at the 17th ACM Conference on Recommender Systems (RecSys 2023)
- Member of the program committee for Late-breaking results and Demos of the 17th ACM Conference on Recommender Systems (RecSys 2023)
- Member of the program committee for the Applied research track of the 32nd ACM Conference on Information and Knowledge Management (CIKM 2023)
- Reviewer of the Neural Computing and Applications (NCAA)
- Member of the program committee of the 17th ACM Conference on Recommender Systems (RecSys 2023)
- Member of the program committee for Reproducibility track of the 17th ACM Conference on Recommender Systems (RecSys 2023)
- Member of the program committee of the 31st Conference on User Modeling, Adaptation and Personalization (UMAP 2023)
- Member of the program committee of the User Modeling and Personalization Track at the 2023 edition of The Web Conference (WWW 2023)
- Member of the program committee of the 4th International Workshop on Algorithmic Bias in Search and Recommendation (Bias 2023) at the 45th European Conference on Information Retrieval (ECIR 2023)
- Member of the program committee for the Reproducibility track of the 45th European Conference on Information Retrieval (ECIR 2023)
- Member of the program committee of the 45th European Conference on Information Retrieval (ECIR 2023)
- Member of the program committee of the 2nd Workshop Perspectives on the Evaluation of Recommender Systems (PERSPECTIVES 2022) at the 16th ACM Conference on Recommender Systems (RecSys 2022)
- Member of the program committee of the 4th Knowledge-aware and ConversationalRecSys Workshop (KaRS 2022) at the 16th ACM Conference on Recommender Systems (RecSys 2022)
- Member of the program committee for the RecSys Challenge 2022 of the 16th ACM Conference on Recommender Systems (RecSys 2022)
- Member of the program committee for Late-breaking results and Demos of the 16th ACM Conference on Recommender Systems (RecSys 2022)
- Member of the program committee for Reproducibility track of the 16th ACM Conference on Recommender Systems (RecSys 2022)
- Reviewer of the IEEE Transactions on Network Science and Engineering (TNSE)
- Reviewer of the ACM Transactions on Recommender Systems (TORS)
- Member of the program committee of the Second Joint Conference of the Information Retrieval Communities in Europe (CIRCLE 2022)
- Member of the program committee for the Reproducibility track of the ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2022)
- Member of the program committee for the Doctoral Consortium of the ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2022)
- DEI chair of the ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2022)
- Tutorial chair of the 22nd International Conference on Web Engineering (ICWE 2022)
- Member of the program committee of the User Modeling and Personalization Research Track at the 2022 edition of The Web Conference (WWW 2022)
- Member of the program committee of the 37th ACM/SIGAPP Symposium on Applied Computing (SAC 2022)
- Member of the program committee of the 3rd International Workshop on Algorithmic Bias in Search and Recommendation (Bias 2022) at the 44th European Conference on Information Retrieval (ECIR 2022)
- Member of the program committee for the Reproducibility track of the 44th European Conference on Information Retrieval (ECIR 2022)
- Member of the program committee for Workshops of the 44th European Conference on Information Retrieval (ECIR 2022)
- Member of the program committee of the 44th European Conference on Information Retrieval (ECIR 2022)
- General co-chair of the 30th Conference on User Modeling, Adaptation and Personalization (UMAP 2022)
- General co-chair of the 33rd ACM Conference on Hypertext and Social Media (HT 2022)
- Member of the program committee of the 1st Workshop on Adaptive and Personalized Explainable User Interfaces (APEx-UI) at the 27th Annual Conference on Intelligent User Interfaces (IUI 2022)
- Reviewer of the Information Systems (InfoSys)
- Reviewer of the ACM Transactions on the Web (TWEB)
- Reviewer of the International Journal of Data Science and Analytics (JDSA)
- Member of the program committee for the Resource track of the 30th ACM Conference on Information and Knowledge Management (CIKM 2021)
- Reviewer of the Expert Systems (ExSy)
- Reviewer of the AI Magazine (AI Magazine)
- Reviewer of the Journal of Big Data Mining and Analytics (BDMA)
- Member of the program committee for Reproducibility track of the 15th ACM Conference on Recommender Systems (RecSys 2021)
- Editor of the Journal of Frontiers in Big Data, specialty section on Recommender Systems
- External expert for the Agencia Estatal de Investigación (ANEP)
- Member of the program committee of the International Workshop on Transparent Personalization Methods based on Heterogeneous Personal Data (ExUM) at the 29th Conference on User Modeling, Adaptation and Personalization (UMAP 2021)
- Member of the program committee for Demo and Late Breaking Results at the 29th Conference on User Modeling, Adaptation and Personalization (UMAP 2021)
- Track co-chair of the 29th Conference on User Modeling, Adaptation and Personalization (UMAP 2021)
- Member of the program committee of the 36th ACM Symposium on Applied Computing (SAC 2021)
- Member of the program committee of the 2nd International Workshop on Algorithmic Bias in Search and Recommendation (Bias 2021) at the 43rd European Conference on Information Retrieval (ECIR 2021)
- Member of the program committee for Reproducibility papers of the 43rd European Conference on Information Retrieval (ECIR 2021)
- Member of the program committee for Short papers of the 43rd European Conference on Information Retrieval (ECIR 2021)
- Member of the program committee of the 43rd European Conference on Information Retrieval (ECIR 2021)
- Member of the program committee of the 35th AAAI Conference on Artificial Intelligence (AAAI 2021)
- Reviewer of the Journal of Mathematical Problems in Engineering (MPE)
- Reviewer of the IEEE Transactions on Knowledge and Data Engineering (TKDE)
- Reviewer of the Journal of Data Mining and Knowledge Discovery (DAMI)
- Proceedings chair of the ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2021)
- Member of the editorial board of the Information Technology & Tourism Journal (ITT)
- External expert for European Quality Assurance (EQA)
- Reviewer of the Journal of Internet Technology (JIT)
- Reviewer of the ACM Computing Surveys (CSUR)
- Reviewer of the Journal of Frontiers in Psychology, section Human-Media Interaction (Frontiers)
- Reviewer of the International Journal of Computational Intelligence Systems (IJCIS)
- Member of the program committee for short papers of the ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2020)
- Independent referee for the Dutch Research Council (NWO)
- Member of the program committee for Demo and Late Breaking Results at the 28th Conference on User Modeling, Adaptation and Personalization (UMAP 2020)
- Member of the program committee of the 28th Conference on User Modeling, Adaptation and Personalization (UMAP 2020)
- Member of the program committee of the 29th International Joint Conference on Artificial Intelligence (IJCAI-PRICAI 2020)
- Member of the program committee of the Joint Conference of the Information Retrieval Communities in Europe (CIRCLE 2020)
- Member of the program committee of the Workshop on Explainable User Models and Personalised Systems (ExUm 2020) at the 28th ACM Conference on User Modeling, Adaptation and Personalization (UMAP 2020)
- Member of the program committee of the 1st International Workshop on Algorithmic Bias in Search and Recommendation (Bias 2020) at the 42nd European Conference on Information Retrieval (ECIR 2020)
- Member of the program committee of the 35th ACM Symposium on Applied Computing (SAC 2020)
- Member of the program committee of the User Modeling, Personalization, and Experience Track at the 2020 edition of The Web Conference (WWW 2020)
- Member of the program committee of the 42nd European Conference on Information Retrieval (ECIR 2020)
- Reviewer of the Journal of ACM Transactions on Interactive Intelligent Systems (ACM TIIS)
- Member of the program committee of the 6th Recommender Systems Special Track at the 33rd International FLAIRS Conference (RecSys FLAIRS 2020)
- Member of the program committee of the 1st International 'Alan Turing' Conference on Decision Support and Recommender Systems (DSRS-Turing 2019)
- Reviewer of the Journal of ACM Transactions on Internet Technology (ACM TOIT)
- Member of the program committee of the Second Workshop on Knowledge-Aware Recommender Systems (KaRS 2019) at the 28th ACM International Conference on Information and Knowledge Management (CIKM 2019)
- Member of the program committee of the workshop on Online Recommender Systems and User Modeling (ORSUM 2019) at the 13th ACM Conference on Recommender Systems (RecSys 2019)
- Member of the program committee for Demo and Late Breaking Results of the 13th ACM Conference on Recommender Systems (RecSys 2019)
- Member of the program committee of the 3rd International Workshop on Recent Trends in News Information Retrieval (NewsIR 2019) at the 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2019)
- Reviewer of the International Journal on Artificial Intelligence Tools (IJAIT)
- Member of the program committee of the 20th International Society for Music Information Retrieval Conference (ISMIR 2019)
- Member of the program committee of the Workshop on Personalisation and Decision Support for Citizen Service Enhancement at Scale (IEEE Smart-PDS 2019) at the 3rd IEEE Conference on Smart City Innovations (IEEE SCI 2019)
- Reviewer of the Journal of Intelligent Information Systems (JIIS)
- Member of the program committee for Doctoral Consortium at the 27th Conference on User Modeling, Adaptation and Personalization (UMAP 2019)
- Member of the program committee for Demo and Late Breaking Results at the 27th Conference on User Modeling, Adaptation and Personalization (UMAP 2019)
- Reviewer of the Artificial Intelligence Review journal (AIRE)
- Member of the program committee of the 28th International Joint Conference on Artificial Intelligence (IJCAI 19)
- Member of the program committee of the 5th Recommender Systems Special Track at the 32nd International FLAIRS Conference (RecSys FLAIRS 2019)
- Member of the senior program committee of the 13th ACM Conference on Recommender Systems (RecSys 2019)
- Member of the program committee of the 27th Conference on User Modeling, Adaptation and Personalization (UMAP 2019)
- Member of the program committee for Demo of the 41st European Conference on Information Retrieval (ECIR 2019)
- Member of the program committee of the 34th ACM Symposium on Applied Computing (SAC 2019)
- Member of the program committee of the 41st European Conference on Information Retrieval (ECIR 2019)
- Tutorial chair of the 13th ACM Conference on Recommender Systems (RecSys 2019)
- Member of the program committee of the User Modeling, Personalization, and Experience Track at the 2019 edition of The Web Conference (WWW 2019)
- Technical evaluation of a project for Asociación Española de Normalización y Certificación (AENOR)
- Reviewer of the ACM Transactions on Information Systems journal (ACM TOIS)
- Reviewer of the Applied Soft Computing journal (ASOC)
- Member of the program committee of the 5th Spanish Conference on Information Retrieval (CERI 2018)
- Reviewer of the IEEE Access journal (Access)
- Member of the program committee of the 19th International Society for Music Information Retrieval Conference (ISMIR 2018)
- Reviewer of the Discrete Dynamics in Nature and Society journal (DDNS)
- Member of the program committee for short papers of the ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2018)
- Member of the senior program committee of the 12th ACM Conference on Recommender Systems (RecSys 2018)
- Reviewer of the User Modeling and User-Adapted Interaction journal (UMUAI)
- Member of the program committee of the 26th Conference on User Modeling, Adaptation and Personalization (UMAP 2018)
- Member of the program committee of the 29th ACM Conference on Hypertext and Social Media (HT 2018)
- Member of the program committee of the 2nd Workshop on Semantics-Enabled Recommender Systems (SERecSys 2017) at the IEEE International Conference on Data Mining (ICDM 2017)
- Member of the program committee of the 33rd ACM Symposium on Applied Computing (SAC 2018)
- Workshop chair of the 12th ACM Conference on Recommender Systems (RecSys 2018)
- Reviewer of the Journal of Information Science (JIS)
- Member of the program committee of the 40th European Conference on Information Retrieval (ECIR 2018)
- Member of the program committee of the User Modeling, Personalization, and Experience on the Web Track at the 2018 edition of The Web Conference (27th of the (former) World Wide Web Conference) (WWW 2018)
- Reviewer of the ACM Transactions on Social Computing (ACM TSC)
- Reviewer of the Special issue on Recent Advances in Engineering Systems, at the Advances in Science, Technology and Engineering Systems Journal (ASTES)
- Reviewer of the IEEE MultiMedia (MMSI)
- Member of the program committee of the 18th International Society for Music Information Retrieval Conference (ISMIR 2017)
- Reviewer of the Online Information Review (OIR)
- Member of the program committee of the 2nd Workshop on Surprise, Opposition, and Obstruction in Adaptive and Personalised Systems (SOAP 2017) at the 25th Conference on User Modelling, Adaptation and Personalization (UMAP 2017)
- Member of the program committee of the Workshop on Temporal Aspects in User Modelling (THUM 2017) at the 25th Conference on User Modelling, Adaptation and Personalization (UMAP 2017)
- Member of the program committee of the 28th ACM Conference on Hypertext and Social Media, Adaptive Hypertext and Recommendation Track (HT 2017)
- Member of the program committee of the 2017 ACM RecSys Challenge (RecSys Challenge) at the 11th ACM Conference Series on Recommender Systems (RecSys 2017)
- Member of the program committee of the Workshop on Intelligent Recommender Systems by Knowledge Transfer & Learning (RecSysKTL) at the 11th ACM Conference Series on Recommender Systems (RecSys 2017)
- Member of the program committee of the 11th ACM Conference on Recommender Systems (RecSys 2017)
- Member of the program committee of the 25th European Conference on Information Systems (ECIS 2017)
- Member of the program committee of the 39th European Conference on Information Retrieval (ECIR 2017)
- Member of the program committee of the RecSys Special Track at the 30th International FLAIRS Conference (RecSys FLAIRS 2017)
- Member of the program committee of the User Modeling, Personalization, and Experience Track at the 26th International World Wide Web Conference (WWW 2017)
- Member of the program committee of the 2016 ACM RecSys Challenge (RecSys Challenge) at the 10th ACM Conference Series on Recommender Systems (RecSys 2016)
- Member of the program committee for the Recommender Systems track of the 32nd ACM Symposium on Applied Computing (SAC 2017)
- Reviewer of a Special issue of International Journal of Approximate Reasoning (IJAR) about Tri-partition of a Universe: Three-way decisions, orthopairs and square of opposition
- External expert for the Research Foundation - Flanders (FWO)
- Member of the program committee of the 24th ACM Multimedia Conference (ACMMM 2016)
- Reviewer of the Advances in Artificial Intelligence Journal (AAI)
- Reviewer of the International Journal of Human-Computer Studies (IJHCS)
- Member of the program committee of the 17th International Society for Music Information Retrieval Conference (ISMIR 2016)
- Member of the program committee of the 7th International Workshop on Modeling Social Media (MSM 2016) at the 25th International World Wide Web Conference (WWW 2016)
- Member of the senior program committee of the 10th ACM Conference on Recommender Systems (RecSys 2016)
- Member of the program committee of the 38th European Conference on Information Retrieval (ECIR 2016)
- Proceedings chair of the 10th ACM Conference on Recommender Systems (RecSys 2016)
- Member of the program committee of the Behavior Analysis and Personalization Track at the 25th International World Wide Web Conference (WWW 2016)
- Member of the program committee of the RecSys Special Track at the 29th International FLAIRS Conference (RecSys FLAIRS 2016)
- Member of the program committee for Doctoral Consortium at the 26th ACM Conference on Hypertext and Social Media (HT 2015)
- External expert for the Swiss National Science Foundation (SNSF)
- Reviewer of the WIREs Data Mining and Knowledge Discovery (DMKD)
- Reviewer of the Journal of Universal Computer Science (JUCS)
- Member of the tutorial committee of the 38th European Conference Information Retrieval (ECIR 2016)
- Member of the program committee of the 16th International Society for Music Information Retrieval Conference (ISMIR 2015)
- Member of the program committee of the 15th International Conference on Knowledge Management and Knowledge Technologies and Data-Driven Business (i-KNOW 2015)
- Member of the program committee of the 9th ACM Conference on Recommender Systems (RecSys 2015)
- Member of the program committee of the ACM SIGIR International Conference on The Theory of Information Retrieval (ICTIR 2015)
- Member of the program committee of the 16th International Conference on Electronic Commerce and Web Technologies (EC-WEB 2015)
- Member of the program committee of the International Workshop on Deep Content Analytics Techniques for Personalized and Intelligent Services (DECAT 2015) at the 23rd Conference on User Modelling, Adaptation and Personalization (UMAP 2015)
- Member of the program committee of the ACM International Conference on Interactive Experiences for Television and Online Video (TVX 2015)
- Member of the program committee of the 5th International Workshop on Context-awareness in Retrieval and Recommendation (CaRR 2015) at the 37th European Conference on Information Retrieval (ECIR 2015)
- Member of the program committee of the 37th European Conference on Information Retrieval (ECIR 2015)
- Member of the program committee of the RecSys Special Track at the 28th International FLAIRS Conference (RecSys FLAIRS 2015)
- Member of the program committee of the 2014 ACM RecSys Challenge (RecSys Challenge) at the 8th ACM Conference Series on Recommender Systems (RecSys 2014)
- Member of the program committee of the 2nd International Workshop on Multimodal Crowd Sensing (CrowdSens) at the 20th ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD 2014)
- Member of the program committee of the Workshop on New Trends in Content-based Recommender Systems (CBRecSys 2014) at the 8th ACM Conference Series on Recommender Systems (RecSys 2014)
- Member of the program committee for late results at the 22nd Conference on User Modelling, Adaptation and Personalization (UMAP 2014)
- Member of the program committee of the 14th International Conference on Knowledge Management and Knowledge Technologies and Data-Driven Business (i-KNOW 2014)
- Member of the program committee of the 1st International Workshop on Social Personalisation (SP 2014) at the 25th ACM Conference on Hypertext and Social Media (HT 2014)
- Member of the editorial board of the RecSys Review Journal (Review)
- Member of the editorial board of the Information Retrieval Journal (IRJ)
- Member of the program committee of the 6th International Conference on Knowledge Discovery and Information Retrieval (KDIR 2014)
- Member of the program committee of the 15th International Conference on Electronic Commerce and Web Technologies (EC-WEB 2014)
- Reviewer of the Journal of Public Library of Science ONE (PLOS ONE)
- Reviewer of the Journal of ACM Transactions on Intelligent Systems and Technology (ACM TIST)
- Member of the program committee of the 7th ASE International Conference on Social Computing (SocialCom 2014)
- Reviewer of the Journal of IET Software (IET SEN)
- Organizer of the Workshop on Recommender Systems Evaluation: Dimensions and Design (REDD) at the 8th ACM Conference Series on Recommender Systems (RecSys 2014)
- Member of the program committee of the International Workshop on News Recommendation and Analytics (NRA 2014) at the 22nd Conference on User Modelling, Adaptation and Personalization (UMAP 2014)
- Member of the program committee of the 3rd Spanish Conference on Information Retrieval (CERI 2014)
- Member of the program committee of the 8th ACM Conference on Recommender Systems (RecSys 2014)
- Member of the program committee of the 4th International Workshop on Context-awareness in Retrieval and Recommendation (CaRR 2014) at the 36th European Conference on Information Retrieval (ECIR 2014)
- Member of the program committee of the 5th Information Interaction in Context Conference (IIiX 2014)
- Member of the program committee of the 5th International Workshop on Modeling Social Media: Mining Big Data in Social Media and the Web (MSM 2014) at the 23rd International World Wide Web Conference (WWW 2014)
- Member of the program committee of the Sixth International Conference on Information, Process, and Knowledge Management (eKNOW 2014)
- Member of the program committee of the 36th European Conference on Information Retrieval (ECIR 2014)
- Reviewer of the Journal of Web Semantics (JWS)
- Member of the program committee of the Workshop on Recommender Systems meet Big Data & Semantic Technologies (SeRSy) at the 7th ACM Conference Series on Recommender Systems (RecSys 2013)
- Member of the program committee of the International News Recommender Systems Workshop and Challenge (NRS) at the 7th ACM Conference Series on Recommender Systems (RecSys 2013)
- Reviewer of the Information Processing & Management journal (IPM)
- Reviewer of the Information Retrieval Journal (IRJ)
- Organizer of the Workshop on Reproducibility and Replication in Recommender Systems Evaluation (RepSys) at the 7th ACM Conference Series on Recommender Systems (RecSys 2013)
- Reviewer of the Journal of the American Society for Information Science and Technology (JASIST)
- Reviewer of the Expert Systems with Applications (ESWA)
- Reviewer of the Science of Computer Programming (SCICO)
- Reviewer of the Journal of Information Processing Systems (JIPS)
- Member of the program committee of the 7th ACM Conference Series on Recommender Systems (RecSys 2013)
- Member of the program committee of the Social & Mobile Computing track from the 13th International Conference on Knowledge Management and Knowledge Technologies (i-KNOW 2013)
- Reviewer of the Knowledge-Based Systems (Knosys)
- Member of the program committee of the 14th International Conference on Electronic Commerce and Web Technologies (EC-WEB 2013)
- Member of the program committee of the 2nd International Workshop on Real-Time Analysis and Mining of Social Streams (RAMSS 2013) at the 22nd International World Wide Web Conference (WWW 2013)
- Member of the program committee of the 22nd ACM Conference on Information and Knowledge Management (CIKM 2013)
- Member of the program committee of the 4th International Workshop on Modeling Social Media: Mining, Modeling and Recommending 'Things' in Social Media (MSM 2013) at the 24th ACM Conference on Hypertext and Social Media (HT 2013)
- Member of the program committee of the Linking people (Social Media) track from the 24th ACM Conference on Hypertext and Social Media (HT 2013)
- Reviewer of a Special issue of ACM Transactions on Intelligent Systems and Technology (TIST) about Diversity and Discovery in Recommender Systems and Exploratory Search
- Member of the program committee of the 35th European Conference on Information Retrieval (ECIR 2013)
- Member of the program committee of the 1st International Workshop on Recommendation Utility Evaluation: Beyond RMSE (RUE 2012) at the 6th ACM Conference on Recommender Systems (RecSys 2012)
- Reviewer of the Information Sciences Journal (INS)
- Member of the program committee of the 21st ACM Conference on Information and Knowledge Management (CIKM 2012)
- Member of the program committee of the 1st International Workshop on Real-Time Analysis and Mining of Social Streams (RAMSS 2012) at the 6th International AAAI Conference on Weblogs and Social Media (ICWSM 2012)
- Member of the program committee of the 34th European Conference on Information Retrieval (ECIR 2012)
- Reviewer of the Journal of Computer Science and Technology (JCST)
- Organizer of the Workshop on Knowledge Extraction and Exploitation from semi-Structured Online Sources (KEESOS 2011) at the XIV Conferencia de la Asociación Española para la Inteligencia Artificial (CAEPIA 11)
- Reviewer of a Special issue of Journal of Computer Science and Technology (JCST) about Social Networks
- Member of the program committee of the 2nd International Workshop on Information Heterogeneity and Fusion in Recommender Systems (HetRec 2011) at the 5th ACM Conference on Recommender Systems (RecSys 2011)
- Member of the program committee of the 3rd International Workshop on Search and Mining User-generated Content (SMUC 2011) at the 20th ACM Conference on Information and Knowledge Management (CIKM 2011)
- Reviewer of a Special issue of Information Processing & Management (IPM) about Personalization and Recommendation in Information Access
- Member of the program committee of the 20th ACM Conference on Information and Knowledge Management (CIKM 2011)
- Reviewer of a Special issue of Language Resources and Evaluation Journal (LRE) about Analysis of short texts on the Web
- Reviewer of a Special issue of ACM Transactions on Intelligent Systems and Technology (TIST) about Search and mining user generated contents
- Member of the program committee of the First International Workshop on Adaptation, Personalization, and Recommendation in the Social-semantic web (APRESW 2010) at the 7th Extended Semantic Web Conference (ESWC 2010)
- Organizer of the I Congreso Español de Recuperación de Información (CERI 2010)
Conference attendance / Asistencia a congresos
- RecSys 2024, Bari, Italy. Workshop chair + one workshop paper + keynote speaker in RecTour 2024.
- UMAP 2024, Cagliari, Italy. One short paper.
- SISREC-CAEPIA 2024, A Coruña, Spain. Two key works + one extended abstract.
- Evaluation Perspectives of Recommender Systems: Driving Research and Education, Dagstuhl, Germany.
- ECIR 2024, Glasgow, Scotland. One full paper.
- REP '23, Santa Cruz, California, US (online).
- Reproducibility Crisis in ML-based Science, Princeton University, New Jersey, US (online).
- SIGIR 2022, Madrid, Spain (hybrid - in person). DEI chair.
- UMAP 2022, Barcelona, Spain (hybrid - in person). General chair, one paper.
- HT 2022, Barcelona, Spain (hybrid - in person). General chair.
- UA 2.0 - Towards greener and sustainable cities, Exeter, United Kingdom (hybrid - online).
- SIGSPATIAL 2021, Beijing, China (online).
- RecSys 2021, Amsterdam, The Netherlands (hybrid - online). One full paper, one demo.
- IIR 2021, Bari, Italy (hybrid - online). One paper.
- DIR 2020, Antwerp, Belgium (online).
- SIGSPATIAL 2020, Seattle, Washington, USA (online).
- RecSys 2020, Sao Paulo, Brazil (online). One workshop paper.
- UNIA Summer School on Data Science and Machine Learning with Applications, Jaen (online), Spain. Two tutorials.
- CIRCLE 2020, Samatan, France (online). One short paper + one CERI paper + one extended abstract.
- UMAP 2020, Genoa, Italy (online). One short paper.
- RecSys 2019, Copenhagen, Denmark. Tutorial chair + one short paper + one workshop paper.
- RecSys 2018, Vancouver, Canada. Workshop chair + one full paper + one short paper + one demo paper + 2 workshop papers.
- CERI 2018, Zaragoza, Spain. Two extended abstracts.
- ECIR 2018, Grenoble, France. One full paper.
- RecSys 2017, Como, Italy. One short paper + 2 workshop papers.
- RecSys Summer School 2017, Bolzano, Italy. Tutorial.
- RecSys 2015, Vienna, Austria. Tutorial.
- RecSys 2014, Foster City, USA. Workshop organiser (REDD) + paper + 2 posters + demo + workshop paper.
- HT 2014, Santiago, Chile. Tutorial.
- TREC 2013, Gaithersburg, MA, USA.
- ERCIM ABCDE Seminar, Athens, Greece.
- RecSys 2013, Hong Kong, China. Workshop organiser (RepSys) + poster + workshop paper.
- ICTIR 2013, Copenhagen, Denmark. One paper.
- 1st RecSysNL Meetup, Amsterdam, The Netherlands.
- ICWSM 2013, Boston, MA, USA. One poster.
- UMAP 2013, Rome, Italy. One project paper.
- OAIR 2013, Lisbon, Portugal. One short paper.
- DIR 2013, Delft, The Netherlands. One compressed paper.
- RecSys 2012, Dublin, Ireland. One poster.
- ECIR 2012, Barcelona, Spain.
- KEESOS in CAEPIA 2011, Tenerife, Spain. Workshop organizer.
- RecSys 2011, Chicago, IL, USA (with student grant). One paper (doctoral symposium) + poster + workshop paper.
- ICTIR 2011, Bertinoro, Italy. One paper.
- UMAP 2011, Girona, Spain (with student grant). One paper (doctoral consortium).
- ECIR 2011, Dublin, Ireland (with student grant). One paper.
- RecSys 2010, Barcelona, Spain (with student grant). One workshop paper.
- SIGIR 2010, Geneva, Switzerland
- ECIR 2010, Milton Keynes, United Kingdom (with student grant). One paper.
- FQAS 2009, Copenhagen, Denmark. One paper.
- ICTIR 2009, Cambridge, United Kingdom (with student grant)
- WWW 2009, Madrid, Spain
- WSDM 2009, Barcelona, Spain
- ECML-PKDD 2008, Antwerpen, Belgium. One workshop paper.
- TFoWS 2008, Grandvalira, Andorra
- ESSIR 2007, Glasgow, United Kingdom
- TFoWS 2007, Bertinoro, Italy