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Rethinking Reinforcement Learning for Recommendation: A Prompt Perspective


Jun 15, 2022
Xin Xin, Tiago Pimentel, Alexandros Karatzoglou, Pengjie Ren, Konstantina Christakopoulou, Zhaochun Ren


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Enhancing Top-N Item Recommendations by Peer Collaboration


Dec 02, 2021
Yang Sun, Fajie Yuan, Min Yang, Alexandros Karatzoglou, Shen Li, Xiaoyan Zhao

* 9 pages, 6 figures 

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Supervised Advantage Actor-Critic for Recommender Systems


Nov 05, 2021
Xin Xin, Alexandros Karatzoglou, Ioannis Arapakis, Joemon M. Jose

* 9 pages, 4 figures, In Proceedings of the 15th ACM International Conference on Web Search and Data Mining (WSDM '22), February 21-25, 2022, Phoenix, Arizona. arXiv admin note: text overlap with arXiv:2006.05779 

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Choosing the Best of Both Worlds: Diverse and Novel Recommendations through Multi-Objective Reinforcement Learning


Oct 28, 2021
Dusan Stamenkovic, Alexandros Karatzoglou, Ioannis Arapakis, Xin Xin, Kleomenis Katevas

* 9 pages, 4 figures, Proc. ACM WSDM, 2022 In Proceedings of the 15th ACM International Conference on Web Search and Data Mining (WSDM '22), February 21-25, 2022, Phoenix, Arizona 

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On Interpretation and Measurement of Soft Attributes for Recommendation


May 19, 2021
Krisztian Balog, Filip Radlinski, Alexandros Karatzoglou

* Proceedings of the 44th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR '21), 2021 

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Graph Convolutional Embeddings for Recommender Systems


Mar 05, 2021
Paula Gómez Duran, Alexandros Karatzoglou, Jordi Vitrià, Xin Xin, Ioannis Arapakis

* 10 pages, 4 figures, SIGIR July 2021 

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Self-Supervised Reinforcement Learning for Recommender Systems


Jun 11, 2020
Xin Xin, Alexandros Karatzoglou, Ioannis Arapakis, Joemon M. Jose

* SIGIR2020 

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Graph Highway Networks


Apr 09, 2020
Xin Xin, Alexandros Karatzoglou, Ioannis Arapakis, Joemon M. Jose


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Parameter-Efficient Transfer from Sequential Behaviors for User Modeling and Recommendation


Feb 04, 2020
Fajie Yuan, Xiangnan He, Alexandros Karatzoglou, Liguang Zhang


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