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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

Sequential recommendation based on multi-interest framework models the user's recent interaction sequence into multiple different interest vectors, since a single low-dimensional vector cannot fully represent the diversity of user…

Information Retrieval · Computer Science 2021-12-17 Jie Zhang , Ke-Jia Chen , Jingqiang Chen

Dynamic recommendation is essential for modern recommender systems to provide real-time predictions based on sequential data. In real-world scenarios, the popularity of items and interests of users change over time. Based on this…

Information Retrieval · Computer Science 2021-01-11 Xiaohan Li , Mengqi Zhang , Shu Wu , Zheng Liu , Liang Wang , Philip S. Yu

Attribute-aware sequential recommendation entails predicting the next item a user will interact with based on a chronologically ordered history of past interactions, enriched with item attributes. Existing methods typically leverage…

Information Retrieval · Computer Science 2026-05-08 Shereen Elsayed , Ngoc Son Le , Ahmed Rashed , Lars Schmidt-Thieme

Recommender systems have long been built upon the modeling of interactions between users and items, while recent studies have sought to broaden this paradigm by generalizing to new users and items, incorporating diverse information sources,…

Information Retrieval · Computer Science 2025-10-28 Chanyoung Chung , Kyeongryul Lee , Sunbin Park , Joyce Jiyoung Whang

Despite recommender systems play a key role in network content platforms, mining the user's interests is still a significant challenge. Existing works predict the user interest by utilizing user behaviors, i.e., clicks, views, etc., but…

Information Retrieval · Computer Science 2023-08-15 Xuanji Xiao , Huaqiang Dai , Qian Dong , Shuzi Niu , Yuzhen Liu , Pei Liu

Transformer-based sequential recommendation (TSR) models have shown superior performance in recommendation systems, where the quality of item representations plays a crucial role. Classical representation methods integrate item features…

Information Retrieval · Computer Science 2025-04-22 Hao Deng , Haibo Xing , Kanefumi Matsuyama , Yulei Huang , Jinxin Hu , Hong Wen , Jia Xu , Zulong Chen , Yu Zhang , Xiaoyi Zeng , Jing Zhang

Recommender models aimed at mining users' behavioral patterns have raised great attention as one of the essential applications in daily life. Recent work on graph neural networks (GNNs) or debiasing methods has attained remarkable gains.…

Information Retrieval · Computer Science 2024-09-05 Xinfeng Wang , Fumiyo Fukumoto , Jin Cui , Yoshimi Suzuki , Jiyi Li , Dongjin Yu

Recent years have witnessed the explosive growth of interaction behaviors in multimedia information systems, where multi-behavior recommender systems have received increasing attention by leveraging data from various auxiliary behaviors…

Information Retrieval · Computer Science 2023-07-26 Xiao Luo , Daqing Wu , Yiyang Gu , Chong Chen , Luchen Liu , Jinwen Ma , Ming Zhang , Minghua Deng , Jianqiang Huang , Xian-Sheng Hua

Personalization lies at the core of boosting the product search system performance. Prior studies mainly resorted to the semantic matching between textual queries and user/product related documents, leaving the user collaborative behaviors…

Information Retrieval · Computer Science 2021-09-28 Xiangkun Yin , Yangyang Guo , Liqiang Nie , Zhiyong Cheng

We propose a novel recommender framework, MuSTRec (Multimodal and Sequential Transformer-based Recommendation), that unifies multimodal and sequential recommendation paradigms. MuSTRec captures cross-item similarities and collaborative…

Information Retrieval · Computer Science 2026-02-10 Bucher Sahyouni , Matthew Vowels , Liqun Chen , Simon Hadfield

The recent popularity of edge devices and Artificial Intelligent of Things (AIoT) has driven a new wave of contextual recommendations, such as location based Point of Interest (PoI) recommendations and computing resource-aware mobile app…

Information Retrieval · Computer Science 2022-08-23 Sichun Luo , Xinyi Zhang , Yuanzhang Xiao , Linqi Song

Large language models (LLMs) have emerged as a cutting-edge approach in sequential recommendation, leveraging historical interactions to model dynamic user preferences. Current methods mainly focus on learning processed recommendation data…

Information Retrieval · Computer Science 2025-07-15 Weicong Qin , Yi Xu , Weijie Yu , Chenglei Shen , Xiao Zhang , Ming He , Jianping Fan , Jun Xu

Learning user representations based on historical behaviors lies at the core of modern recommender systems. Recent advances in sequential recommenders have convincingly demonstrated high capability in extracting effective user…

Information Retrieval · Computer Science 2021-09-14 Shengyu Zhang , Dong Yao , Zhou Zhao , Tat-seng Chua , Fei Wu

Learning feature interaction is the critical backbone to building recommender systems. In web-scale applications, learning feature interaction is extremely challenging due to the sparse and large input feature space; meanwhile, manually…

Information Retrieval · Computer Science 2023-11-13 Huan Gui , Ruoxi Wang , Ke Yin , Long Jin , Maciej Kula , Taibai Xu , Lichan Hong , Ed H. Chi

Integrated recommendation, which aims at jointly recommending heterogeneous items from different channels in a main feed, has been widely applied to various online platforms. Though attractive, integrated recommendation requires the ranking…

Information Retrieval · Computer Science 2023-05-23 Yue Xu , Qijie Shen , Jianwen Yin , Zengde Deng , Dimin Wang , Hao Chen , Lixiang Lai , Tao Zhuang , Junfeng Ge

Collaborative filtering algorithms haven been widely used in recommender systems. However, they often suffer from the data sparsity and cold start problems. With the increasing popularity of social media, these problems may be solved by…

Information Retrieval · Computer Science 2014-12-25 Chen Luo , Wei Pang , Zhe Wang

Graph collaborative filtering, which learns user and item representations through message propagation over the user-item interaction graph, has been shown to effectively enhance recommendation performance. However, most current graph…

Information Retrieval · Computer Science 2023-11-14 Yijie Zhang , Yuanchen Bei , Shiqi Yang , Hao Chen , Zhiqing Li , Lijia Chen , Feiran Huang

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

Recommendation systems effectively guide users in locating their desired information within extensive content repositories. Generally, a recommendation model is optimized to enhance accuracy metrics from a user utility standpoint, such as…

Information Retrieval · Computer Science 2023-10-23 Xu Huang , Jianxun Lian , Hao Wang , Defu Lian , Xing Xie
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