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Related papers: User Long-Term Multi-Interest Retrieval Model for …

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Precisely modeling user ultra-long sequences is critical for industrial recommender systems. Current approaches predominantly focus on leveraging ultra-long sequences in the ranking stage, whereas research for the candidate retrieval stage…

Information Retrieval · Computer Science 2025-08-26 Qin Ren , Zheng Chai , Xijun Xiao , Yuchao Zheng , Di Wu

In recommendation systems, user interests are always in a state of constant flux. Typically, a user interest experiences a emergent phase, a stable phase, and a declining phase, which are referred to as the "user interest life-cycle".…

Information Retrieval · Computer Science 2025-05-14 Yinjiang Cai , Jiangpan Hou , Yangping Zhu , Yuan Nie

Effectively modeling the dynamic nature of user preferences is crucial for enhancing recommendation accuracy and fostering transparency in recommender systems. Traditional user profiling often overlooks the distinction between transitory…

Information Retrieval · Computer Science 2025-11-04 Milad Sabouri , Masoud Mansoury , Kun Lin , Bamshad Mobasher

Historical behaviors have shown great effect and potential in various prediction tasks, including recommendation and information retrieval. The overall historical behaviors are various but noisy while search behaviors are always sparse.…

Information Retrieval · Computer Science 2023-10-11 Tong Guo , Xuanping Li , Haitao Yang , Xiao Liang , Yong Yuan , Jingyou Hou , Bingqing Ke , Chao Zhang , junlin He , Shunyu Zhang , Enyun Yu , Wenwu

Sequential recommendation, a critical task in recommendation systems, predicts the next user action based on the understanding of the user's historical behaviors. Conventional studies mainly focus on cross-behavior modeling with…

Information Retrieval · Computer Science 2025-06-23 Zhen Gong , Zhifang Fan , Hui Lu , Qiwei Chen , Chenbin Zhang , Lin Guan , Yuchao Zheng , Feng Zhang , Xiao Yang , Zuotao Liu

Industrial recommender systems usually consist of the matching stage and the ranking stage, in order to handle the billion-scale of users and items. The matching stage retrieves candidate items relevant to user interests, while the ranking…

Information Retrieval · Computer Science 2019-04-18 Chao Li , Zhiyuan Liu , Mengmeng Wu , Yuchi Xu , Pipei Huang , Huan Zhao , Guoliang Kang , Qiwei Chen , Wei Li , Dik Lun Lee

Accurately modeling user preferences is crucial for improving the performance of content-based recommender systems. Existing approaches often rely on simplistic user profiling methods, such as averaging or concatenating item embeddings,…

Information Retrieval · Computer Science 2025-08-13 Milad Sabouri , Masoud Mansoury , Kun Lin , Bamshad Mobasher

Large Language Models (LLMs) pose a new paradigm of modeling and computation for information tasks. Recommendation systems are a critical application domain poised to benefit significantly from the sequence modeling capabilities and world…

Recommendation systems play a critical role in enhancing user experience and engagement in various online platforms. Traditional methods, such as Collaborative Filtering (CF) and Content-Based Filtering (CBF), rely heavily on past user…

Information Retrieval · Computer Science 2025-01-22 Xiaochuan Xu , Zeqiu Xu , Peiyang Yu , Jiani Wang

Click-through rate (CTR) prediction is critical for industrial applications such as recommender system and online advertising. Practically, it plays an important role for CTR modeling in these applications by mining user interest from rich…

Information Retrieval · Computer Science 2019-05-27 Qi Pi , Weijie Bian , Guorui Zhou , Xiaoqiang Zhu , Kun Gai

User activity sequences have emerged as one of the most important signals in recommender systems. We present a foundational model, PinFM, for understanding user activity sequences across multiple applications at a billion-scale visual…

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

Click-through Rate (CTR) prediction is crucial for online personalization platforms. Recent advancements have shown that modeling rich user behaviors can significantly improve the performance of CTR prediction. Current long-term user…

Information Retrieval · Computer Science 2025-02-18 Xiang Xu , Hao Wang , Wei Guo , Luankang Zhang , Wanshan Yang , Runlong Yu , Yong Liu , Defu Lian , Enhong Chen

Modeling holistic user interests is important for improving recommendation systems but is challenged by high computational cost and difficulty in handling diverse information with full behavior context. Existing search-based methods might…

Information Retrieval · Computer Science 2025-04-10 Yong Bai , Rui Xiang , Kaiyuan Li , Yongxiang Tang , Yanhua Cheng , Xialong Liu , Peng Jiang , Kun Gai

Modeling long-term user interests with massive historical user behaviors enhances click-through rate (CTR) prediction performance in advertising and recommendation systems. Typically, a two-stage framework is widely adopted, where a general…

Information Retrieval · Computer Science 2026-05-18 Jiangli Shao , Kaifu Zheng , Hao Fang , Huimu Ye , Zhiwei Liu , Bo Zhang , Shu Han , Xingxing Wang

For applied intelligence, utility-driven pattern discovery algorithms can identify insightful and useful patterns in databases. However, in these techniques for pattern discovery, the number of patterns can be huge, and the user is often…

Databases · Computer Science 2022-06-14 Jinbao Miao , Wensheng Gan , Shicheng Wan , Yongdong Wu , Philippe Fournier-Viger

In the context of the booming digital economy, recommendation systems, as a key link connecting users and numerous services, face challenges in modeling user behavior sequences on local-life service platforms, including the sparsity of long…

Information Retrieval · Computer Science 2025-11-04 Zhaoyu Hu , Jianyang Wang , Hao Guo , Yuan Tian , Erpeng Xue , Xianyang Qi , Hongxiang Lin , Lei Wang , Sheng Chen

Group recommendation provides personalized recommendations to a group of users based on their shared interests, preferences, and characteristics. Current studies have explored different methods for integrating individual preferences and…

Information Retrieval · Computer Science 2023-08-09 Jianye Ji , Jiayan Pei , Shaochuan Lin , Taotao Zhou , Hengxu He , Jia Jia , Ning Hu

User intention which often changes dynamically is considered to be an important factor for modeling users in the design of recommendation systems. Recent studies are starting to focus on predicting user intention (what users want) beyond…

Information Retrieval · Computer Science 2021-07-19 Arpita Chaudhuri , Debasis Samanta , Monalisa Sarma

In recommendation systems, the matching stage is becoming increasingly critical, serving as the upper limit for the entire recommendation process. Recently, some studies have started to explore the use of multi-scenario information for…

Information Retrieval · Computer Science 2024-08-07 Yingcai Ma , Ziyang Wang , Yuliang Yan , Jian Wu , Yuning Jiang , Longbin Li , Wen Chen , Jianhang Huang