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Using graph models with relational information in recommender systems has shown promising results. Yet, most methods are transductive, i.e., they are based on dimensionality reduction architectures. Hence, they require heavy retraining…

Information Retrieval · Computer Science 2022-09-14 Theis E. Jendal , Matteo Lissandrini , Peter Dolog , Katja Hose

Recently, sequential recommendation has emerged as a widely studied topic. Existing researches mainly design effective neural architectures to model user behavior sequences based on item IDs. However, this kind of approach highly relies on…

Information Retrieval · Computer Science 2022-06-07 Shanlei Mu , Yupeng Hou , Wayne Xin Zhao , Yaliang Li , Bolin Ding

Sequential recommendation is an extensively explored approach to capturing users' evolving preferences based on past interactions, aimed at predicting their next likely choice. Despite significant advancements in this domain, including…

Information Retrieval · Computer Science 2025-04-15 Kowei Shih , Yi Han , Li Tan

Sequential Recommendation (SR) plays a pivotal role in recommender systems by tailoring recommendations to user preferences based on their non-stationary historical interactions. Achieving high-quality performance in SR requires attention…

Information Retrieval · Computer Science 2024-08-23 Wuchao Li , Rui Huang , Haijun Zhao , Chi Liu , Kai Zheng , Qi Liu , Na Mou , Guorui Zhou , Defu Lian , Yang Song , Wentian Bao , Enyun Yu , Wenwu Ou

Recommender Systems have been widely used to help users in finding what they are looking for thus tackling the information overload problem. After several years of research and industrial findings looking after better algorithms to improve…

Information Retrieval · Computer Science 2018-07-18 Vito Bellini , Angelo Schiavone , Tommaso Di Noia , Azzurra Ragone , Eugenio Di Sciascio

Over the past decade, recommender systems have experienced a surge in popularity. Despite notable progress, they grapple with challenging issues, such as high data dimensionality and sparseness. Representing users and items as…

Information Retrieval · Computer Science 2025-07-28 Pedro R. Pires , Tiago A. Almeida

Transformer-based recommender systems, such as BERT4Rec or SASRec, achieve state-of-the-art results in sequential recommendation. However, it is challenging to use these models in production environments with catalogues of millions of…

Information Retrieval · Computer Science 2024-08-20 Aleksandr V. Petrov , Craig Macdonald , Nicola Tonellotto

Transformer-based sequential recommenders, such as SASRec or BERT4Rec, typically rely solely on learned item ID embeddings, making them vulnerable to the item cold-start problem, particularly in environments with dynamic item catalogs.…

Information Retrieval · Computer Science 2025-08-27 Jan Malte Lichtenberg , Antonio De Candia , Matteo Ruffini

Deep learning-based sequential recommender systems have recently attracted increasing attention from both academia and industry. Most of industrial Embedding-Based Retrieval (EBR) system for recommendation share the similar ideas with…

Information Retrieval · Computer Science 2022-04-01 Fuyu Lv , Mengxue Li , Tonglei Guo , Changlong Yu , Fei Sun , Taiwei Jin , Wilfred Ng

In the realm of music recommendation, sequential recommender systems have shown promise in capturing the dynamic nature of music consumption. Nevertheless, traditional Transformer-based models, such as SASRec and BERT4Rec, while effective,…

Information Retrieval · Computer Science 2024-09-09 Davide Abbattista , Vito Walter Anelli , Tommaso Di Noia , Craig Macdonald , Aleksandr Vladimirovich Petrov

Sequential recommendation recommends items based on sequences of users' historical actions. The key challenge in it is how to effectively model the influence from distant actions to the action to be predicted, i.e., recognizing the…

Information Retrieval · Computer Science 2020-01-31 Renqin Cai , Qinglei Wang , Chong Wang , Xiaobing Liu

Sequential recommendation (SR) aims to predict a user's next item preference by modeling historical interaction sequences. Recent advances often integrate frequency-domain modules to compensate for self-attention's low-pass nature by…

Information Retrieval · Computer Science 2025-11-17 Peng He , Yao Liu , Yanglei Gan , Run Lin , Tingting Dai , Qiao Liu , Xuexin Li

Recommender systems are widely used in industry to improve user experience. Despite great success, they have recently been criticized for collecting private user data. Federated Learning (FL) is a new paradigm for learning on distributed…

Machine Learning · Computer Science 2022-10-26 Junyi Li , Heng Huang

Recommender systems (RS) suggest items-based on the estimated preferences of users. Recent RS methods utilise vector space embeddings and deep learning methods to make efficient recommendations. However, most of these methods overlook the…

Information Retrieval · Computer Science 2020-09-01 Makbule Gulcin Ozsoy

In web environments, user preferences are often refined progressively as users move from browsing broad categories to exploring specific items. However, existing generative recommenders overlook this natural refinement process. Generative…

Information Retrieval · Computer Science 2025-12-01 Tianxin Wei , Xuying Ning , Xuxing Chen , Ruizhong Qiu , Yupeng Hou , Yan Xie , Shuang Yang , Zhigang Hua , Jingrui He

Recommender systems are indispensable in the realm of online applications, and sequential recommendation has enjoyed considerable prevalence due to its capacity to encapsulate the dynamic shifts in user interests. However, previous…

Information Retrieval · Computer Science 2024-04-16 Junzhe Jiang , Shang Qu , Mingyue Cheng , Qi Liu , Zhiding Liu , Hao Zhang , Rujiao Zhang , Kai Zhang , Rui Li , Jiatong Li , Min Gao

Traditional recommender systems such as matrix factorization methods have primarily focused on learning a shared dense embedding space to represent both items and user preferences. Subsequently, sequence models such as RNN, GRUs, and,…

Information Retrieval · Computer Science 2024-08-27 Yaoyiran Li , Xiang Zhai , Moustafa Alzantot , Keyi Yu , Ivan Vulić , Anna Korhonen , Mohamed Hammad

Personalized recommendation is ubiquitous, playing an important role in many online services. Substantial research has been dedicated to learning vector representations of users and items with the goal of predicting a user's preference for…

Information Retrieval · Computer Science 2020-01-03 Jianing Sun , Yingxue Zhang , Chen Ma , Mark Coates , Huifeng Guo , Ruiming Tang , Xiuqiang He

Sequential recommendation models have been widely adopted for modeling user behavior. Existing approaches typically construct user interaction sequences by sorting items according to timestamps and then model user preferences from…

Information Retrieval · Computer Science 2026-04-16 Haolin Zhang , Longtao Xiao , Guohao Cai , Ruixuan Li , Xiu Li

Sequential recommendation is a popular paradigm in modern recommender systems. In particular, one challenging problem in this space is cross-domain sequential recommendation (CDSR), which aims to predict future behaviors given user…

Information Retrieval · Computer Science 2025-05-29 Clark Mingxuan Ju , Leonardo Neves , Bhuvesh Kumar , Liam Collins , Tong Zhao , Yuwei Qiu , Qing Dou , Sohail Nizam , Sen Yang , Neil Shah