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Interactive recommender systems can dynamically adapt to user feedback, but often suffer from content homogeneity and filter bubble effects due to overfitting short-term user preferences. While recent efforts aim to improve content…

Information Retrieval · Computer Science 2026-05-12 Chongjun Xia , Yanchun Peng , Xianzhi Wang

Multimodal recommendation combines the user historical behaviors with the modal features of items to capture the tangible user preferences, presenting superior performance compared to the conventional ID-based recommender systems. However,…

Information Retrieval · Computer Science 2026-01-27 Yuzhuo Dang , Xin Zhang , Zhiqiang Pan , Yuxiao Duan , Wanyu Chen , Fei Cai , Honghui 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

Recently, much effort has been devoted to modeling users' multi-interests based on their behaviors or auxiliary signals. However, existing methods often rely on heuristic assumptions, e.g., co-occurring items indicate the same interest of…

Information Retrieval · Computer Science 2025-07-18 Ziyan Wang , Yingpeng Du , Zhu Sun , Jieyi Bi , Haoyan Chua , Tianjun Wei , Jie Zhang

While large language models (LLMs) have proven effective in leveraging textual data for recommendations, their application to multimodal recommendation tasks remains relatively underexplored. Although LLMs can process multimodal information…

Information Retrieval · Computer Science 2025-04-23 Chen Zhang , Bo Hu , Weidong Chen , Zhendong Mao

Sequential Recommendation (SR) task involves predicting the next item a user is likely to interact with, given their past interactions. The SR models examine the sequence of a user's actions to discern more complex behavioral patterns and…

Information Retrieval · Computer Science 2025-04-22 Wujiang Xu , Qitian Wu , Zujie Liang , Jiaojiao Han , Xuying Ning , Yunxiao Shi , Wenfang Lin , Yongfeng Zhang

Generating user-friendly explanations regarding why an item is recommended has become increasingly common, largely due to advances in language generation technology, which can enhance user trust and facilitate more informed decision-making…

Information Retrieval · Computer Science 2024-01-04 Yucong Luo , Mingyue Cheng , Hao Zhang , Junyu Lu , Qi Liu , Enhong Chen

Recommender systems help users navigate information overload by providing personalized recommendations aligned with their preferences. Collaborative Filtering (CF) is a widely adopted approach, but while advanced techniques like graph…

Information Retrieval · Computer Science 2024-09-24 Qiyao Ma , Xubin Ren , Chao Huang

Owing to their powerful semantic reasoning capabilities, Large Language Models (LLMs) have been effectively utilized as recommenders, achieving impressive performance. However, the high inference latency of LLMs significantly restricts…

Information Retrieval · Computer Science 2024-08-21 Yu Cui , Feng Liu , Pengbo Wang , Bohao Wang , Heng Tang , Yi Wan , Jun Wang , Jiawei Chen

Sequential recommendation (SR) tasks aim to predict users' next interaction by learning their behavior sequence and capturing the connection between users' past interactions and their changing preferences. Conventional SR models often focus…

Information Retrieval · Computer Science 2024-12-19 Haoyi Zhang , Guohao Sun , Jinhu Lu , Guanfeng Liu , Xiu Susie Fang

Large language model (LLM)-enhanced sequential recommendation typically aims to improve two core components: user semantic embedding extraction and utilization. Despite promising results, existing methods still have two limitations: 1) In…

Information Retrieval · Computer Science 2026-05-13 Guorui Li , Dugang Liu , Lei Li , Xing Tang , Zhong Ming

Large Language Models (LLMs) have achieved remarkable success in various fields, prompting several studies to explore their potential in recommendation systems. However, these attempts have so far resulted in only modest improvements over…

Information Retrieval · Computer Science 2024-09-20 Junyi Chen , Lu Chi , Bingyue Peng , Zehuan Yuan

As a paradigm that delves into the deep seated drivers of user behavior, motivation-based recommendation systems have emerged as a prominent research direction in the field of personalized information retrieval. Unlike traditional…

Information Retrieval · Computer Science 2026-03-16 Yicheng Di

Sequential recommendation is a task to capture hidden user preferences from historical user item interaction data and recommend next items for the user. Significant progress has been made in this domain by leveraging classification based…

Information Retrieval · Computer Science 2024-08-30 Panfeng Cao , Pietro Lio

Recommender systems are indispensable in the realm of online applications, and sequential recommendation has enjoyed considerable prevalence due to its capacity to encapsulate the dynamic shifts in user interests. However, previous…

Information Retrieval · Computer Science 2024-04-16 Junzhe Jiang , Shang Qu , Mingyue Cheng , Qi Liu , Zhiding Liu , Hao Zhang , Rujiao Zhang , Kai Zhang , Rui Li , Jiatong Li , Min Gao

Recently, large language models (LLMs) have exhibited significant progress in language understanding and generation. By leveraging textual features, customized LLMs are also applied for recommendation and demonstrate improvements across…

Information Retrieval · Computer Science 2023-11-07 Zhenrui Yue , Sara Rabhi , Gabriel de Souza Pereira Moreira , Dong Wang , Even Oldridge

There is a growing interest in utilizing large-scale language models (LLMs) to advance next-generation Recommender Systems (RecSys), driven by their outstanding language understanding and in-context learning capabilities. In this scenario,…

Information Retrieval · Computer Science 2025-08-18 Haohao Qu , Wenqi Fan , Zihuai Zhao , Qing Li

Large language models have recently shown promise for multimodal recommendation, particularly with text and image inputs. Yet real-world recommendation signals extend far beyond these modalities. To reflect this, we formalize recommendation…

Information Retrieval · Computer Science 2026-05-01 Zijie Lei , Tao Feng , Zhigang Hua , Yan Xie , Guanyu Lin , Shuang Yang , Ge Liu , Jiaxuan You

Large Language Models (LLMs) have achieved remarkable progress in language understanding and generation. Custom LLMs leveraging textual features have been applied to recommendation systems, demonstrating improvements across various…

Information Retrieval · Computer Science 2024-06-19 Shaohuang Wang , Lun Wang , Yunhan Bu , Tianwei Huang

The importance of recommender systems is growing rapidly due to the exponential increase in the volume of content generated daily. This surge in content presents unique challenges for designing effective recommender systems. Key among these…

Computation and Language · Computer Science 2025-06-12 Jiahao Tian , Jinman Zhao , Zhenkai Wang , Zhicheng Ding