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Sequential recommendation predicts users' next behaviors with their historical interactions. Recommending with longer sequences improves recommendation accuracy and increases the degree of personalization. As sequences get longer, existing…

Information Retrieval · Computer Science 2022-09-05 Qianying Lin , Wen-Ji Zhou , Yanshi Wang , Qing Da , Qing-Guo Chen , Bing Wang

User embeddings (vectorized representations of a user) are essential in recommendation systems. Numerous approaches have been proposed to construct a representation for the user in order to find similar items for retrieval tasks, and they…

Information Retrieval · Computer Science 2023-05-29 Hui Shi , Yupeng Gu , Yitong Zhou , Bo Zhao , Sicun Gao , Jishen Zhao

Sequential Recommendation (SRs) that capture users' dynamic intents by modeling user sequential behaviors can recommend closely accurate products to users. Previous work on SRs is mostly focused on optimizing the recommendation accuracy,…

Information Retrieval · Computer Science 2019-08-28 Wanyu Chen , Pengjie Ren , Fei Cai , Maarten de Rijke

Sequential interaction networks (SIN) have been commonly adopted in many applications such as recommendation systems, search engines and social networks to describe the mutual influence between users and items/products. Efforts on…

Machine Learning · Computer Science 2023-05-09 Junda Ye , Zhongbao Zhang , Li Sun , Yang Yan , Feiyang Wang , Fuxin Ren

Industrial recommendation systems are typically composed of multiple stages, including retrieval, ranking, and blending. The retrieval stage plays a critical role in generating a high-recall set of candidate items that covers a wide range…

Information Retrieval · Computer Science 2025-07-01 Zhibo Fan , Hongtao Lin , Haoyu Chen , Bowen Deng , Hedi Xia , Yuke Yan , James Li

Sequential recommender models are essential components of modern industrial recommender systems. These models learn to predict the next items a user is likely to interact with based on his/her interaction history on the platform. Most…

Information Retrieval · Computer Science 2023-03-28 Bo Chang , Alexandros Karatzoglou , Yuyan Wang , Can Xu , Ed H. Chi , Minmin Chen

Recently, substantial research has been conducted on sequential recommendation, with the objective of forecasting the subsequent item by leveraging a user's historical sequence of interacted items. Prior studies employ both capsule networks…

Information Retrieval · Computer Science 2025-05-01 Zhikai Wang , Yanyan Shen

Large language models (LLMs) have recently demonstrated strong potential for sequential recommendation. However, current LLM-based approaches face critical limitations in modeling users' long-term and diverse interests. First, due to…

Information Retrieval · Computer Science 2025-10-30 Jingyi Zhou , Cheng Chen , Kai Zuo , Manjie Xu , Zhendong Fu , Yibo Chen , Xu Tang , Yao Hu

Capturing users' precise preferences is a fundamental problem in large-scale recommender system. Currently, item-based Collaborative Filtering (CF) methods are common matching approaches in industry. However, they are not effective to model…

Information Retrieval · Computer Science 2020-01-01 Fuyu Lv , Taiwei Jin , Changlong Yu , Fei Sun , Quan Lin , Keping Yang , Wilfred Ng

User interests are usually dynamic in the real world, which poses both theoretical and practical challenges for learning accurate preferences from rich behavior data. Among existing user behavior modeling solutions, attention networks are…

Information Retrieval · Computer Science 2022-04-14 Chao Chen , Haoyu Geng , Nianzu Yang , Junchi Yan , Daiyue Xue , Jianping Yu , Xiaokang Yang

The goal of sequential recommendation (SR) is to predict a user's potential interested items based on her/his historical interaction sequences. Most existing sequential recommenders are developed based on ID features, which, despite their…

Information Retrieval · Computer Science 2023-10-24 Jinpeng Wang , Ziyun Zeng , Yunxiao Wang , Yuting Wang , Xingyu Lu , Tianxiang Li , Jun Yuan , Rui Zhang , Hai-Tao Zheng , Shu-Tao Xia

Sequential recommendation task aims to predict user preference over items in the future given user historical behaviors. The order of user behaviors implies that there are resourceful sequential patterns embedded in the behavior history…

Information Retrieval · Computer Science 2019-11-12 Jiarui Qin , Kan Ren , Yuchen Fang , Weinan Zhang , Yong Yu

Debiased recommender models have recently attracted increasing attention from the academic and industry communities. Existing models are mostly based on the technique of inverse propensity score (IPS). However, in the recommendation domain,…

Information Retrieval · Computer Science 2022-08-16 Quanyu Dai , Zhenhua Dong , Xu Chen

Recommendation system plays an important role in online web applications. Sequential recommender further models user short-term preference through exploiting information from latest user-item interaction history. Most of the sequential…

Information Retrieval · Computer Science 2020-09-14 Ye Tao , Can Wang , Lina Yao , Weimin Li , Yonghong Yu

Many existing industrial recommender systems are sensitive to the patterns of user-item engagement. Light users, who interact less frequently, correspond to a data sparsity problem, making it difficult for the system to accurately learn and…

Information Retrieval · Computer Science 2024-08-08 Hanjia Lyu , Hanqing Zeng , Yinglong Xia , Ren Chen , Jiebo Luo

Online stores and service providers rely heavily on recommendation softwares to guide users through the vast amount of available products. Consequently, the field of recommender systems has attracted increased attention from the industry…

Information Retrieval · Computer Science 2022-10-17 Abdullah Alhadlaq , Said Kerrache , Hatim Aboalsamh

Sequential recommender systems have shown effective suggestions by capturing users' interest drift. There have been two groups of existing sequential models: user- and item-centric models. The user-centric models capture personalized…

Information Retrieval · Computer Science 2022-09-15 Dongmin Hyun , Chanyoung Park , Junsu Cho , Hwanjo Yu

Item indexing, which maps a large corpus of items into compact discrete representations, is critical for both discriminative and generative recommender systems, yet existing Vector Quantization (VQ)-based approaches struggle with the highly…

Information Retrieval · Computer Science 2026-01-29 Jing Yan , Yimeng Bai , Zongyu Liu , Yahui Liu , Junwei Wang , Jingze Huang , Haoda Li , Sihao Ding , Shaohui Ruan , Yang Zhang

Recommendation problems with large numbers of discrete items, such as products, webpages, or videos, are ubiquitous in the technology industry. Deep neural networks are being increasingly used for these recommendation problems. These models…

Machine Learning · Computer Science 2019-07-11 Manas R. Joglekar , Cong Li , Jay K. Adams , Pranav Khaitan , Quoc V. Le

In this paper, we propose a novel sequence-aware recommendation model. Our model utilizes self-attention mechanism to infer the item-item relationship from user's historical interactions. With self-attention, it is able to estimate the…

Information Retrieval · Computer Science 2018-08-28 Shuai Zhang , Yi Tay , Lina Yao , Aixin Sun