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Large Language Models (LLMs) have achieved remarkable success in recent years, owing to their impressive generalization capabilities and rich world knowledge. To capitalize on the potential of using LLMs as recommender systems, mainstream…

Information Retrieval · Computer Science 2025-10-31 Min Hou , Chenxi Bai , Le Wu , Hao Liu , Kai Zhang , Weiwen Liu , Richang Hong , Ruiming Tang , Meng Wang

LLMs have gained immense popularity among researchers and the general public for its impressive capabilities on a variety of tasks. Notably, the efficacy of LLMs remains significantly dependent on the quality and structure of the input…

Machine Learning · Computer Science 2025-04-08 Wenliang Zheng , Sarkar Snigdha Sarathi Das , Yusen Zhang , Rui Zhang

The integration of LLMOps into personalized recommendation systems marks a significant advancement in managing LLM-driven applications. This innovation presents both opportunities and challenges for enterprises, requiring specialized teams…

Information Retrieval · Computer Science 2024-04-02 Chenxi Shi , Penghao Liang , Yichao Wu , Tong Zhan , Zhengyu Jin

The core task of recommender systems is to learn user preferences from historical user-item interactions. With the rapid development of large language models (LLMs), recent research has explored leveraging the reasoning capabilities of LLMs…

Information Retrieval · Computer Science 2025-10-28 Xiaoyu Kong , Junguang Jiang , Bin Liu , Ziru Xu , Han Zhu , Jian Xu , Bo Zheng , Jiancan Wu , Xiang Wang

Serendipity plays a pivotal role in enhancing user satisfaction within recommender systems, yet its evaluation poses significant challenges due to its inherently subjective nature and conceptual ambiguity. Current algorithmic approaches…

Information Retrieval · Computer Science 2025-07-24 Li Kang , Yuhan Zhao , Li Chen

We propose Rec-R1, a general reinforcement learning framework that bridges large language models (LLMs) with recommendation systems through closed-loop optimization. Unlike prompting and supervised fine-tuning (SFT), Rec-R1 directly…

Information Retrieval · Computer Science 2026-01-30 Jiacheng Lin , Tian Wang , Kun Qian

Artificial intelligence (AI) has gained significant attention in healthcare consultation due to its potential to improve clinical workflow and enhance medical communication. However, owing to the complex nature of medical information, large…

Computation and Language · Computer Science 2024-03-05 Xiaolan Chen , Ziwei Zhao , Weiyi Zhang , Pusheng Xu , Le Gao , Mingpu Xu , Yue Wu , Yinwen Li , Danli Shi , Mingguang He

By augmenting Large Language Models (LLMs) with external tools, their capacity to solve complex problems has been significantly enhanced. However, despite ongoing advancements in the parsing capabilities of LLMs, incorporating all available…

Computation and Language · Computer Science 2025-11-24 Hang Gao , Yongfeng Zhang

The recent success of large language models (LLMs) has shown great potential to develop more powerful conversational recommender systems (CRSs), which rely on natural language conversations to satisfy user needs. In this paper, we embark on…

Computation and Language · Computer Science 2024-06-21 Xiaolei Wang , Xinyu Tang , Wayne Xin Zhao , Jingyuan Wang , Ji-Rong Wen

Real-world recommendation systems commonly offer diverse content scenarios for users to interact with. Considering the enormous number of users in industrial platforms, it is infeasible to utilize a single unified recommendation model to…

Information Retrieval · Computer Science 2024-12-10 Chonggang Song , Chunxu Shen , Hao Gu , Yaoming Wu , Lingling Yi , Jie Wen , Chuan Chen

Large language models (LLMs) are increasingly leveraged as foundational backbones in the development of advanced recommender systems, offering enhanced capabilities through their extensive knowledge and reasoning. Existing llm-based…

Information Retrieval · Computer Science 2025-02-21 Minjie Hong , Yan Xia , Zehan Wang , Jieming Zhu , Ye Wang , Sihang Cai , Xiaoda Yang , Quanyu Dai , Zhenhua Dong , Zhimeng Zhang , Zhou Zhao

The growing disparity between the exponential scaling of computational resources and the finite growth of high-quality text data now constrains conventional scaling approaches for large language models (LLMs). To address this challenge, we…

Driven by advances in Large Language Models (LLMs), integrating them into recommendation tasks has gained interest due to their strong semantic understanding and prompt flexibility. Prior work encoded user-item interactions or metadata into…

Information Retrieval · Computer Science 2025-06-10 Keyu Zhao , Fengli Xu , Yong Li

Most current recommender systems primarily focus on what to recommend, assuming users always require personalized recommendations. However, with the widely spread of ChatGPT and other chatbots, a more crucial problem in the context of…

Information Retrieval · Computer Science 2024-04-09 Zhefan Wang , Weizhi Ma , Min Zhang

User simulators can rapidly generate a large volume of timely user behavior data, providing a testing platform for reinforcement learning-based recommender systems, thus accelerating their iteration and optimization. However, prevalent user…

Information Retrieval · Computer Science 2024-12-24 Zijian Zhang , Shuchang Liu , Ziru Liu , Rui Zhong , Qingpeng Cai , Xiangyu Zhao , Chunxu Zhang , Qidong Liu , Peng Jiang

Designing effective prompts can empower LLMs to understand user preferences and provide recommendations with intent comprehension and knowledge utilization capabilities. Nevertheless, recent studies predominantly concentrate on task-wise…

Information Retrieval · Computer Science 2025-02-04 Wenyu Mao , Jiancan Wu , Weijian Chen , Chongming Gao , Xiang Wang , Xiangnan He

Recommendation systems aim to assist users to discover most preferred contents from an ever-growing corpus of items. Although recommenders have been greatly improved by deep learning, they still faces several challenges: (1) Behaviors are…

Information Retrieval · Computer Science 2020-11-19 Wendi Ji , Keqiang Wang , Xiaoling Wang , TingWei Chen , Alexandra Cristea

The feedback loop in industrial recommendation systems reinforces homogeneous content, creates filter bubble effects, and diminishes user satisfaction. Recently, large language models(LLMs) have demonstrated potential in serendipity…

Information Retrieval · Computer Science 2025-08-07 Qian Yong , Yanhui Li , Jialiang Shi , Yaguang Dou , Tian Qi

Information technology has profoundly altered the way humans interact with information. The vast amount of content created, shared, and disseminated online has made it increasingly difficult to access relevant information. Over the past two…

Information Retrieval · Computer Science 2025-04-14 Yu Zhang , Shutong Qiao , Jiaqi Zhang , Tzu-Heng Lin , Chen Gao , Yong Li

Large language models (LLMs) have triggered tremendous success to empower our daily life by generative information. The personalization of LLMs could further contribute to their applications due to better alignment with human intents.…

Machine Learning · Computer Science 2024-03-12 Yuxuan Chen , Rongpeng Li , Zhifeng Zhao , Chenghui Peng , Jianjun Wu , Ekram Hossain , Honggang Zhang