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Generative recommendation (GenRec) models typically model user behavior via full attention, but scaling to lifelong sequences is hindered by prohibitive computational costs and noise accumulation from stochastic interactions. To address…

Information Retrieval · Computer Science 2026-02-16 Yixiao Chen , Yuan Wang , Yue Liu , Qiyao Wang , Ke Cheng , Xin Xu , Juntong Yan , Shuojin Yang , Menghao Guo , Jun Zhang , Huan Yu , Jie Jiang

Recurrent neural networks are effective models to process sequences. However, they are unable to learn long-term dependencies because of their inherent sequential nature. As a solution, Vaswani et al. introduced the Transformer, a model…

Machine Learning · Computer Science 2023-03-28 Quentin Fournier , Gaétan Marceau Caron , Daniel Aloise

Sequential recommendation (SR) aims to predict items that users may be interested in based on their historical behavior sequences. We revisit SR from a novel information-theoretic perspective and find that conventional sequential modeling…

Machine Learning · Computer Science 2024-11-04 Wenjia Xie , Hao Wang , Luankang Zhang , Rui Zhou , Defu Lian , Enhong Chen

In recommender systems, modeling user-item behaviors is essential for user representation learning. Existing sequential recommenders consider the sequential correlations between historically interacted items for capturing users' historical…

Information Retrieval · Computer Science 2021-05-04 Yujie Lu , Shengyu Zhang , Yingxuan Huang , Luyao Wang , Xinyao Yu , Zhou Zhao , Fei Wu

Modeling ultra-long user behavior sequences is critical for capturing both long- and short-term preferences in industrial recommender systems. Existing solutions typically rely on two-stage retrieval or indirect modeling paradigms, incuring…

Information Retrieval · Computer Science 2025-07-21 Zheng Chai , Qin Ren , Xijun Xiao , Huizhi Yang , Bo Han , Sijun Zhang , Di Chen , Hui Lu , Wenlin Zhao , Lele Yu , Xionghang Xie , Shiru Ren , Xiang Sun , Yaocheng Tan , Peng Xu , Yuchao Zheng , Di Wu

The transformer model is known to be computationally demanding, and prohibitively costly for long sequences, as the self-attention module uses a quadratic time and space complexity with respect to sequence length. Many researchers have…

Computation and Language · Computer Science 2025-05-19 Ziwei He , Meng Yang , Minwei Feng , Jingcheng Yin , Xinbing Wang , Jingwen Leng , Zhouhan Lin

The analysis of long sequence data remains challenging in many real-world applications. We propose a novel architecture, ChunkFormer, that improves the existing Transformer framework to handle the challenges while dealing with long time…

Machine Learning · Computer Science 2022-01-03 Yue Ju , Alka Isac , Yimin Nie

Deep network architectures struggle to continually learn new tasks without forgetting the previous tasks. A recent trend indicates that dynamic architectures based on an expansion of the parameters can reduce catastrophic forgetting…

Computer Vision and Pattern Recognition · Computer Science 2022-08-09 Arthur Douillard , Alexandre Ramé , Guillaume Couairon , Matthieu Cord

Sequential recommendation has garnered significant attention for its ability to capture dynamic preferences by mining users' historical interaction data. Given that users' complex and intertwined periodic preferences are difficult to…

Information Retrieval · Computer Science 2025-11-27 Huayang Xu , Huanhuan Yuan , Guanfeng Liu , Junhua Fang , Lei Zhao , Pengpeng Zhao

Modeling time-evolving preferences of users with their sequential item interactions, has attracted increasing attention in many online applications. Hence, sequential recommender systems have been developed to learn the dynamic user…

Information Retrieval · Computer Science 2022-06-07 Lianghao Xia , Chao Huang , Yong Xu , Jian Pei

Sequential user modeling, a critical task in personalized recommender systems, focuses on predicting the next item a user would prefer, requiring a deep understanding of user behavior sequences. Despite the remarkable success of…

Artificial Intelligence · Computer Science 2023-10-10 Hao Wang , Jianxun Lian , Mingqi Wu , Haoxuan Li , Jiajun Fan , Wanyue Xu , Chaozhuo Li , Xing Xie

Sequential recommendation aims to choose the most suitable items for a user at a specific timestamp given historical behaviors. Existing methods usually model the user behavior sequence based on the transition-based methods like Markov…

Information Retrieval · Computer Science 2022-07-11 Zijian Li , Ruichu Cai , Fengzhu Wu , Sili Zhang , Hao Gu , Yuexing Hao , Yuguang

Sequential recommendation systems have become a cornerstone of personalized services, adept at modeling the temporal evolution of user preferences by capturing dynamic interaction sequences. Existing approaches predominantly rely on…

Information Retrieval · Computer Science 2025-05-15 Qianru Zhang , Honggang Wen , Wei Yuan , Crystal Chen , Menglin Yang , Siu-Ming Yiu , Hongzhi Yin

This paper introduces FANTF (Fuzzy Attention Network-Based Transformers), a novel approach that integrates fuzzy logic with existing transformer architectures to advance time series forecasting, classification, and anomaly detection tasks.…

Machine Learning · Computer Science 2025-04-02 Sanjay Chakraborty , Fredrik Heintz

Modeling ultra-long user behavior sequences is pivotal for capturing evolving and lifelong interests in modern recommendation systems. However, deploying such models in real-time industrial environments faces a strict "Latency Wall",…

Information Retrieval · Computer Science 2026-02-13 Tianhe Lin , Ziwei Xiong , Baoyuan Ou , Yingjie Qin , Lai Xu , Xiaocheng Zhong , Yao Hu , Zhiyong Wang , Tao Zhou , Yubin Xu , Di Wu

Sequence-based deep learning recommendation models (DLRMs) are an emerging class of DLRMs showing great improvements over their prior sum-pooling based counterparts at capturing users' long term interests. These improvements come at immense…

Machine Learning · Computer Science 2023-01-10 Geet Sethi , Pallab Bhattacharya , Dhruv Choudhary , Carole-Jean Wu , Christos Kozyrakis

The application of diffusion transformers is suffering from their significant inference costs. Recently, feature caching has been proposed to solve this problem by reusing features from previous timesteps, thereby skipping computation in…

Missing data is a pervasive challenge in wireless networks and many other domains, often compromising the performance of machine learning and deep learning models. To address this, we propose a novel framework, FGATT, that combines the…

Machine Learning · Computer Science 2025-02-04 Jinming Xing , Chang Xue , Dongwen Luo , Ruilin Xing

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

In various domains, Sequential Recommender Systems (SRS) have become essential due to their superior capability to discern intricate user preferences. Typically, SRS utilize transformer-based architectures to forecast the subsequent item…

Artificial Intelligence · Computer Science 2024-12-25 Ziwei Liu , Qidong Liu , Yejing Wang , Wanyu Wang , Pengyue Jia , Maolin Wang , Zitao Liu , Yi Chang , Xiangyu Zhao