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Personalized systems rely on user representations to connect behavioral history with downstream recommendation applications. Existing methods typically employ either supervised latent user embeddings, which are effective for retrieval but…

Information Retrieval · Computer Science 2026-05-11 Zhaoxuan Tan , Xiang Zhai , Yan Zhu , Meng Jiang , Mohamed Hammad

Large language models (LLMs) achieve remarkable success in natural language processing (NLP). In practical scenarios like recommendations, as users increasingly seek personalized experiences, it becomes crucial to incorporate user…

Information Retrieval · Computer Science 2025-04-02 Langming Liu , Shilei Liu , Yujin Yuan , Yizhen Zhang , Bencheng Yan , Zhiyuan Zeng , Zihao Wang , Jiaqi Liu , Di Wang , Wenbo Su , Pengjie Wang , Jian Xu , Bo Zheng

Large language models (LLMs) have demonstrated significant potential in solving recommendation tasks. With proven capabilities in understanding user preferences, LLM personalization has emerged as a critical area for providing tailored…

Information Retrieval · Computer Science 2025-11-04 Jiarui Chen

Exploration, the act of broadening user experiences beyond their established preferences, is challenging in large-scale recommendation systems due to feedback loops and limited signals on user exploration patterns. Large Language Models…

One particularly promising use case of Large Language Models (LLMs) for recommendation is the automatic generation of Natural Language (NL) user taste profiles from consumption data. These profiles offer interpretable and editable…

Information Retrieval · Computer Science 2025-07-23 Bruno Sguerra , Elena V. Epure , Harin Lee , Manuel Moussallam

Traditional offline evaluation methods for recommender systems struggle to capture the complexity of modern platforms due to sparse behavioural signals, noisy data, and limited modelling of user personality traits. While simulation…

Information Retrieval · Computer Science 2025-06-06 Chenglong Ma , Ziqi Xu , Yongli Ren , Danula Hettiachchi , Jeffrey Chan

Personalizing large language models (LLMs) to individual user preferences is a critical step beyond generating generically helpful responses. However, current personalization methods are ill-suited for new users, as they typically require…

Machine Learning · Computer Science 2025-09-30 Zikun Qu , Min Zhang , Mingze Kong , Xiang Li , Zhiwei Shang , Zhiyong Wang , Yikun Ban , Shuang Qiu , Yao Shu , Zhongxiang Dai

Reinforcement learning (RL) is increasingly being used in the healthcare domain, particularly for the development of personalized health adaptive interventions. Inspired by the success of Large Language Models (LLMs), we are interested in…

Machine Learning · Computer Science 2025-01-14 Karine Karine , Benjamin M. Marlin

As LLMs become capable of complex tasks, there is growing potential for personalized interactions tailored to the subtle and idiosyncratic preferences of the user. We present a public benchmark, PersonalLLM, focusing on adapting LLMs to…

Machine Learning · Computer Science 2025-02-25 Thomas P. Zollo , Andrew Wei Tung Siah , Naimeng Ye , Ang Li , Hongseok Namkoong

There is a growing interest in natural language-based user profiles for recommender systems, which aims to enhance transparency and scrutability compared with embedding-based methods. Existing studies primarily generate these profiles using…

Information Retrieval · Computer Science 2025-02-14 Zhaolin Gao , Joyce Zhou , Yijia Dai , Thorsten Joachims

Sequential Recommender Systems (SRS), which model a user's interaction history to predict the next item of interest, are widely used in various applications. However, existing SRS often struggle with low-popularity items, a challenge known…

Information Retrieval · Computer Science 2024-12-24 Qidong Liu , Xian Wu , Wanyu Wang , Yejing Wang , Yuanshao Zhu , Xiangyu Zhao , Feng Tian , Yefeng Zheng

User profile modeling plays a key role in personalized systems, as it requires building accurate profiles and updating them with new information. In this paper, we present two high-quality open-source user profile datasets: one for profile…

Computation and Language · Computer Science 2025-03-18 Nusrat Jahan Prottasha , Md Kowsher , Hafijur Raman , Israt Jahan Anny , Prakash Bhat , Ivan Garibay , Ozlem Garibay

Large language models (LLMs) are increasingly integrated into users' daily lives, leading to a growing demand for personalized outputs. Previous work focuses on leveraging a user's own history, overlooking inter-user differences that are…

Computation and Language · Computer Science 2025-09-23 Yilun Qiu , Tianhao Shi , Xiaoyan Zhao , Fengbin Zhu , Yang Zhang , Fuli Feng

Recent advances in Large Language Models (LLMs) have demonstrated significant potential in the field of Recommendation Systems (RSs). Most existing studies have focused on converting user behavior logs into textual prompts and leveraging…

Information Retrieval · Computer Science 2025-01-14 Yuyang Ye , Zhi Zheng , Yishan Shen , Tianshu Wang , Hengruo Zhang , Peijun Zhu , Runlong Yu , Kai Zhang , Hui Xiong

Temporal point processes (TPPs) are widely used to model the timing and occurrence of events in domains such as social networks, transportation systems, and e-commerce. In this paper, we introduce TPP-LLM, a novel framework that integrates…

Machine Learning · Computer Science 2025-06-11 Zefang Liu , Yinzhu Quan

While Video Large Language Models (Video-LLMs) have demonstrated remarkable performance across general video understanding benchmarks-particularly in video captioning and descriptive tasks-they consistently underperform on tasks that…

Computer Vision and Pattern Recognition · Computer Science 2025-10-07 Sameep Vani , Shreyas Jena , Maitreya Patel , Chitta Baral , Somak Aditya , Yezhou Yang

Large language models (LLMs) have recently received significant attention for their exceptional capabilities. Despite extensive efforts in developing general-purpose LLMs that can be utilized in various natural language processing (NLP)…

Information Retrieval · Computer Science 2023-06-08 Fan Yang , Zheng Chen , Ziyan Jiang , Eunah Cho , Xiaojiang Huang , Yanbin Lu

User profile embedded in the prompt template of personalized recommendation agents play a crucial role in shaping their decision-making process. High-quality user profiles are essential for aligning agent behavior with real user interests.…

Information Retrieval · Computer Science 2025-05-27 Yunxiao Shi , Wujiang Xu , Zeqi Zhang , Xing Zi , Qiang Wu , Min Xu

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

User modeling (UM) aims to discover patterns or learn representations from user data about the characteristics of a specific user, such as profile, preference, and personality. The user models enable personalization and suspiciousness…

Computation and Language · Computer Science 2023-12-27 Zhaoxuan Tan , Meng Jiang