2022

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Supervised Advantage Actor-Critic for Recommender Systems
Xin Xin | Alexandros Karatzoglou | Ioannis Arapakis | Joemon M. Jose
WSDM '22: The Fifteenth ACM International Conference on Web Search and Data Mining, Virtual Event / Tempe, AZ, USA, February 21 - 25, 2022

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Choosing the Best of Both Worlds: Diverse and Novel Recommendations through Multi-Objective Reinforcement Learning
Dusan Stamenkovic | Alexandros Karatzoglou | Ioannis Arapakis | Xin Xin | Kleomenis Katevas
WSDM '22: The Fifteenth ACM International Conference on Web Search and Data Mining, Virtual Event / Tempe, AZ, USA, February 21 - 25, 2022

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Enhancing Top-N Item Recommendations by Peer Collaboration
Yang Sun | Fajie Yuan | Min Yang | Alexandros Karatzoglou | Li Shen | Xiaoyan Zhao
SIGIR '22: The 45th International ACM SIGIR Conference on Research and Development in Information Retrieval, Madrid, Spain, July 11 - 15, 2022

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Rethinking Reinforcement Learning for Recommendation: A Prompt Perspective
Xin Xin | Tiago Pimentel | Alexandros Karatzoglou | Pengjie Ren | Konstantina Christakopoulou | Zhaochun Ren
SIGIR '22: The 45th International ACM SIGIR Conference on Research and Development in Information Retrieval, Madrid, Spain, July 11 - 15, 2022

2021

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On Interpretation and Measurement of Soft Attributes for Recommendation
Krisztian Balog | Filip Radlinski | Alexandros Karatzoglou
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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One Person, One Model, One World: Learning Continual User Representation without Forgetting
Fajie Yuan | Guoxiao Zhang | Alexandros Karatzoglou | Joemon M. Jose | Beibei Kong | Yudong Li
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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Disentangling Preference Representations for Recommendation Critiquing with ß-VAE
Preksha Nema | Alexandros Karatzoglou | Filip Radlinski
CIKM '21: The 30th ACM International Conference on Information and Knowledge Management, Virtual Event, Queensland, Australia, November 1 - 5, 2021

2020

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Parameter-Efficient Transfer from Sequential Behaviors for User Modeling and Recommendation
Fajie Yuan | Xiangnan He | Alexandros Karatzoglou | Liguang Zhang
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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Self-Supervised Reinforcement Learning for Recommender Systems
Xin Xin | Alexandros Karatzoglou | Ioannis Arapakis | Joemon M. Jose
Proceedings of the 43rd International ACM SIGIR conference on research and development in Information Retrieval, SIGIR 2020, Virtual Event, China, July 25-30, 2020

2019

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A Simple Convolutional Generative Network for Next Item Recommendation
Fajie Yuan | Alexandros Karatzoglou | Ioannis Arapakis | Joemon M. Jose | Xiangnan He
Proceedings of the Twelfth ACM International Conference on Web Search and Data Mining, WSDM 2019, Melbourne, VIC, Australia, February 11-15, 2019

2018

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A Word is Worth a Thousand Ratings: Augmenting Ratings using Reviews for Collaborative Filtering
Oren Sar Shalom | Guy Uziel | Alexandros Karatzoglou | Amir Kantor
Proceedings of the 2018 ACM SIGIR International Conference on Theory of Information Retrieval, ICTIR 2018, Tianjin, China, September 14-17, 2018

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Recurrent Neural Networks with Top-k Gains for Session-based Recommendations
Balázs Hidasi | Alexandros Karatzoglou
Proceedings of the 27th ACM International Conference on Information and Knowledge Management, CIKM 2018, Torino, Italy, October 22-26, 2018

2016

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Collaborative Filtering Bandits
Shuai Li | Alexandros Karatzoglou | Claudio Gentile
Proceedings of the 39th International ACM SIGIR conference on Research and Development in Information Retrieval, SIGIR 2016, Pisa, Italy, July 17-21, 2016

2014

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Gaussian process factorization machines for context-aware recommendations
Trung V. Nguyen | Alexandros Karatzoglou | Linas Baltrunas
The 37th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR '14, Gold Coast , QLD, Australia - July 06 - 11, 2014

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CARS2: Learning Context-aware Representations for Context-aware Recommendations
Yue Shi | Alexandros Karatzoglou | Linas Baltrunas | Martha A. Larson | Alan Hanjalic
Proceedings of the 23rd ACM International Conference on Conference on Information and Knowledge Management, CIKM 2014, Shanghai, China, November 3-7, 2014

2013

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GAPfm: optimal top-n recommendations for graded relevance domains
Yue Shi | Alexandros Karatzoglou | Linas Baltrunas | Martha A. Larson | Alan Hanjalic
22nd ACM International Conference on Information and Knowledge Management, CIKM'13, San Francisco, CA, USA, October 27 - November 1, 2013

2012

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TFMAP: optimizing MAP for top-n context-aware recommendation
Yue Shi | Alexandros Karatzoglou | Linas Baltrunas | Martha A. Larson | Alan Hanjalic | Nuria Oliver
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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Climbing the app wall: enabling mobile app discovery through context-aware recommendations
Alexandros Karatzoglou | Linas Baltrunas | Karen Church | Matthias Böhmer
21st ACM International Conference on Information and Knowledge Management, CIKM'12, Maui, HI, USA, October 29 - November 02, 2012