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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

Generative recommendation systems have achieved significant advances by leveraging semantic IDs to represent items. However, existing approaches that tokenize each modality independently face two critical limitations: (1) redundancy across…

Information Retrieval · Computer Science 2026-01-14 Haven Kim , Yupeng Hou , Julian McAuley

Recent works in multimodal recommendations, which leverage diverse modal information to address data sparsity and enhance recommendation accuracy, have garnered considerable interest. Two key processes in multimodal recommendations are…

Information Retrieval · Computer Science 2025-05-23 Jinfeng Xu , Zheyu Chen , Wei Wang , Xiping Hu , Sang-Wook Kim , Edith C. H. Ngai

Generative Retrieval (GR) offers a promising paradigm for recommendation through next-token prediction (NTP). However, scaling it to large-scale industrial systems introduces three challenges: (i) within a single request, the identical…

Information Retrieval · Computer Science 2026-04-17 Yanyan Zou , Junbo Qi , Lunsong Huang , Yu Li , Kewei Xu , Jiabao Gao , Binglei Zhao , Xuanhua Yang , Sulong Xu , Shengjie Li

Deep learning relies heavily on data augmentation to mitigate limited data, especially in medical imaging. Recent multimodal learning integrates text and images for segmentation, known as referring or text-guided image segmentation.…

Computer Vision and Pattern Recognition · Computer Science 2025-10-15 Shurong Chai , Rahul Kumar JAIN , Rui Xu , Shaocong Mo , Ruibo Hou , Shiyu Teng , Jiaqing Liu , Lanfen Lin , Yen-Wei Chen

User interests typically encompass both long-term preferences and short-term intentions, reflecting the dynamic nature of user behaviors across different timeframes. The uneven temporal distribution of user interactions highlights the…

Information Retrieval · Computer Science 2026-04-07 Wei Zhou , Yue Shen , Junkai Ji , Yinglan Feng , Xing Tang , Xiuqiang He , Liang Feng , Zexuan Zhu

For present e-commerce platforms, session-based recommender systems are developed to predict users' preference for next-item recommendation. Although a session can usually reflect a user's current preference, a local shift of the user's…

Information Retrieval · Computer Science 2021-07-12 Ruihong Qiu , Zi Huang , Tong Chen , Hongzhi Yin

Learning large-scale pre-trained models on broad-ranging data and then transfer to a wide range of target tasks has become the de facto paradigm in many machine learning (ML) communities. Such big models are not only strong performers in…

Information Retrieval · Computer Science 2025-09-23 Jie Wang , Fajie Yuan , Mingyue Cheng , Joemon M. Jose , Chenyun Yu , Beibei Kong , Zhijin Wang , Bo Hu , Zang Li

We introduce SessionRec, a novel next-session prediction paradigm (NSPP) for generative sequential recommendation, addressing the fundamental misalignment between conventional next-item prediction paradigm (NIPP) and real-world…

Information Retrieval · Computer Science 2025-02-19 Lei Huang , Hao Guo , Linzhi Peng , Long Zhang , Xiaoteng Wang , Daoyuan Wang , Shichao Wang , Jinpeng Wang , Lei Wang , Sheng Chen

Although existing multimodal recommendation models have shown promising performance, their effectiveness continues to be limited by the pervasive data sparsity problem. This problem arises because users typically interact with only a small…

Information Retrieval · Computer Science 2025-12-10 Jinfeng Xu , Zheyu Chen , Shuo Yang , Jinze Li , Zitong Wan , Hewei Wang , Weijie Liu , Yijie Li , Edith C. H. Ngai

Generative models, such as Variational Auto-Encoder (VAE) and Generative Adversarial Network (GAN), have been successfully applied in sequential recommendation. These methods require sampling from probability distributions and adopt…

Information Retrieval · Computer Science 2023-06-23 Hanwen Du , Huanhuan Yuan , Zhen Huang , Pengpeng Zhao , Xiaofang Zhou

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

Session-based recommendation (SBR) aims to predict the following item a user will interact with during an ongoing session. Most existing SBR models focus on designing sophisticated neural-based encoders to learn a session representation,…

Information Retrieval · Computer Science 2024-05-03 Minjin Choi , Hye-young Kim , Hyunsouk Cho , Jongwuk Lee

General recommender systems deliver personalized services by learning user and item representations, with the central challenge being how to capture latent user preferences. However, representations derived from sparse interactions often…

Information Retrieval · Computer Science 2026-04-14 Yu Zhang , Yiwen Zhang , Yi Zhang , Lei Sang

There is an influx of heterogeneous information network (HIN) based recommender systems in recent years since HIN is capable of characterizing complex graphs and contains rich semantics. Although the existing approaches have achieved…

Information Retrieval · Computer Science 2020-07-02 Jiarui Jin , Jiarui Qin , Yuchen Fang , Kounianhua Du , Weinan Zhang , Yong Yu , Zheng Zhang , Alexander J. Smola

Modeling user-item interaction patterns is an important task for personalized recommendations. Many recommender systems are based on the assumption that there exists a linear relationship between users and items while neglecting the…

Information Retrieval · Computer Science 2018-07-12 Shuai Zhang , Lina Yao , Aixin Sun , Sen Wang , Guodong Long , Manqing Dong

Conventional Sequential Recommender Systems (SRS) typically assign unique hash IDs (HID) to construct item embeddings, which mainly capture collaborative signals from historical user-item interactions. However, such embeddings are…

Information Retrieval · Computer Science 2026-05-29 Ziwei Liu , Yejing Wang , Wanyu Wang , Wang Zejian , Qidong Liu , Zijian Zhang , Chong Chen , Wei Huang , Xiangyu Zhao

Sequential recommendation plays a critical role in modern online platforms such as e-commerce, advertising, and content streaming, where accurately predicting users' next interactions is essential for personalization. Recent…

Information Retrieval · Computer Science 2026-03-04 Haofeng Huang , Ling Gai

Modern recommender systems trained on domain-specific data often struggle to generalize across multiple domains. Cross-domain sequential recommendation has emerged as a promising research direction to address this challenge; however,…

Information Retrieval · Computer Science 2026-01-06 Hyunsoo Kim , Jaewan Moon , Seongmin Park , Jongwuk Lee

Sequential recommendation systems often struggle to make predictions or take action when dealing with cold-start items that have limited amount of interactions. In this work, we propose SimRec - a new approach to mitigate the cold-start…

Information Retrieval · Computer Science 2024-10-30 Shaked Brody , Shoval Lagziel