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Recommender systems traditionally represent items using unique identifiers (ItemIDs), but this approach struggles with large, dynamic item corpora and sparse long-tail data, limiting scalability and generalization. Semantic IDs, derived…

Information Retrieval · Computer Science 2026-03-03 Yi Xu , Moyu Zhang , Chenxuan Li , Zhihao Liao , Haibo Xing , Hao Deng , Jinxin Hu , Yu Zhang , Xiaoyi Zeng , Jing Zhang

In recent years, substantial research efforts have been devoted to enhancing sequential recommender systems by integrating abundant side information with ID-based collaborative information. This study specifically focuses on leveraging the…

Information Retrieval · Computer Science 2025-05-27 Enze Liu , Bowen Zheng , Wayne Xin Zhao , Ji-Rong Wen

Sequential Recommendation (SR) models infer user preferences from interaction histories. While transferable Multi-modal SR models outperform traditional ID-based approaches, existing methods struggle with slow fine-tuning convergence due to…

Information Retrieval · Computer Science 2026-03-30 Hao Fan , Qingyang Liu , Hongjiu Liu , Yanrong Hu , Kai Fang

Sequential recommendation (SR) models often capture user preferences based on the historically interacted item IDs, which usually obtain sub-optimal performance when the interaction history is limited. Content-based sequential…

Information Retrieval · Computer Science 2025-10-20 Donglin Zhou , Weike Pan , Zhong Ming

Representation learning in sequential recommendation is critical for accurately modeling user interaction patterns and improving recommendation precision. However, existing approaches predominantly emphasize item-to-item transitions, often…

Information Retrieval · Computer Science 2024-07-17 Yang Liu , Yitong Wang , Chenyue Feng

With the rapid development of recommender systems, there is increasing side information that can be employed to improve the recommendation performance. Specially, we focus on the utilization of the associated \emph{textual data} of items…

Information Retrieval · Computer Science 2024-02-29 Lanling Xu , Zhen Tian , Bingqian Li , Junjie Zhang , Jinpeng Wang , Mingchen Cai , Wayne Xin Zhao

Modeling users' dynamic and evolving preferences from their historical behaviors is challenging and crucial for recommendation systems. Previous methods employ sequential neural networks (e.g., Recurrent Neural Network) to encode users'…

Information Retrieval · Computer Science 2019-08-22 Fei Sun , Jun Liu , Jian Wu , Changhua Pei , Xiao Lin , Wenwu Ou , Peng Jiang

Sequential Recommendation (SR) aims to predict future user-item interactions based on historical interactions. While many SR approaches concentrate on user IDs and item IDs, the human perception of the world through multi-modal signals,…

Information Retrieval · Computer Science 2024-10-08 Youhua Li , Hanwen Du , Yongxin Ni , Yuanqi He , Junchen Fu , Xiangyan Liu , Qi Guo

Sequential Recommendation is a popular recommendation task that uses the order of user-item interaction to model evolving users' interests and sequential patterns in their behaviour. Current state-of-the-art Transformer-based models for…

Information Retrieval · Computer Science 2023-12-19 Aleksandr V. Petrov , Craig Macdonald

Sequential recommendation demonstrates the capability to recommend items by modeling the sequential behavior of users. Traditional methods typically treat users as sequences of items, overlooking the collaborative relationships among them.…

Information Retrieval · Computer Science 2023-08-15 Sijia Liu , Jiahao Liu , Hansu Gu , Dongsheng Li , Tun Lu , Peng Zhang , Ning Gu

Sequential recommendation tasks, which aim to predict the next item a user will interact with, typically rely on models trained solely on historical data. However, in real-world scenarios, user behavior can fluctuate in the long interaction…

Information Retrieval · Computer Science 2024-10-01 Zhaoqi Yang , Yanan Wang , Yong Ge

Recently, sequential recommendation has been adapted to the LLM paradigm to enjoy the power of LLMs. LLM-based methods usually formulate recommendation information into natural language and the model is trained to predict the next item in…

Information Retrieval · Computer Science 2024-02-16 Hanbing Wang , Xiaorui Liu , Wenqi Fan , Xiangyu Zhao , Venkataramana Kini , Devendra Yadav , Fei Wang , Zhen Wen , Jiliang Tang , Hui Liu

ID-based Recommender Systems (RecSys), where each item is assigned a unique identifier and subsequently converted into an embedding vector, have dominated the designing of RecSys. Though prevalent, such ID-based paradigm is not suitable for…

Information Retrieval · Computer Science 2023-12-19 Youhua Li , Hanwen Du , Yongxin Ni , Pengpeng Zhao , Qi Guo , Fajie Yuan , Xiaofang Zhou

There is a growing interest in utilizing large-scale language models (LLMs) to advance next-generation Recommender Systems (RecSys), driven by their outstanding language understanding and in-context learning capabilities. In this scenario,…

Information Retrieval · Computer Science 2025-08-18 Haohao Qu , Wenqi Fan , Zihuai Zhao , Qing Li

Many modern sequential recommender systems use deep neural networks, which can effectively estimate the relevance of items but require a lot of time to train. Slow training increases expenses, hinders product development timescales and…

Information Retrieval · Computer Science 2022-07-18 Aleksandr Petrov , Craig Macdonald

Sequential recommendations have drawn significant attention in modeling the user's historical behaviors to predict the next item. With the booming development of multimodal data (e.g., image, text) on internet platforms, sequential…

Information Retrieval · Computer Science 2024-12-12 Changhong Li , Zhiqiang Guo

Sequential recommender systems rank relevant items by modeling a user's interaction history and computing the inner product between the resulting user representation and stored item embeddings. To avoid the significant memory overhead of…

Sequential recommendation involves automatically recommending the next item to users based on their historical item sequence. While most prior research employs RNN or transformer methods to glean information from the item…

Information Retrieval · Computer Science 2024-10-10 Xiaofan Zhou

The integration of multimodal information into sequential recommender systems has attracted significant attention in recent research. In the initial stages of multimodal sequential recommendation models, the mainstream paradigm was…

Information Retrieval · Computer Science 2024-03-06 Jiaxi Hu , Jingtong Gao , Xiangyu Zhao , Yuehong Hu , Yuxuan Liang , Yiqi Wang , Ming He , Zitao Liu , Hongzhi Yin

In music recommendation systems, multimodal interest learning is pivotal, which allows the model to capture nuanced preferences, including textual elements such as lyrics and various musical attributes such as different instruments and…

Information Retrieval · Computer Science 2025-08-29 Shijia Wang , Tianpei Ouyang , Qiang Xiao , Dongjing Wang , Yintao Ren , Songpei Xu , Da Guo , Chuanjiang Luo