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Recommender systems have traditionally followed modular architectures comprising candidate generation, multi-stage ranking, and re-ranking, each trained separately with supervised objectives and hand-engineered features. While effective in…

Information Retrieval · Computer Science 2025-10-06 Rahul Raja , Anshaj Vats , Arpita Vats , Anirban Majumder

The recommendation of medication is a vital aspect of intelligent healthcare systems, as it involves prescribing the most suitable drugs based on a patient's specific health needs. Unfortunately, many sophisticated models currently in use…

Information Retrieval · Computer Science 2025-01-28 Qidong Liu , Xian Wu , Xiangyu Zhao , Yuanshao Zhu , Zijian Zhang , Feng Tian , Yefeng Zheng

Large Language Models (LLMs) have shown strong potential in generating natural language explanations for recommender systems. However, existing methods often overlook the sequential dynamics of user behavior and rely on evaluation metrics…

Information Retrieval · Computer Science 2026-03-26 Gangyi Zhang , Runzhe Teng , Chongming Gao

Large Language Models (LLMs) have emerged as powerful tools in the field of Natural Language Processing (NLP) and have recently gained significant attention in the domain of Recommendation Systems (RS). These models, trained on massive…

Information Retrieval · Computer Science 2024-06-19 Likang Wu , Zhi Zheng , Zhaopeng Qiu , Hao Wang , Hongchao Gu , Tingjia Shen , Chuan Qin , Chen Zhu , Hengshu Zhu , Qi Liu , Hui Xiong , Enhong Chen

Large Language Models (LLMs) have emerged as promising recommendation systems, offering novel ways to model user preferences through generative approaches. However, many existing methods often rely solely on text semantics or incorporate…

Machine Learning · Computer Science 2026-01-09 Mir Rayat Imtiaz Hossain , Leo Feng , Leonid Sigal , Mohamed Osama Ahmed

Recommender systems have become integral to our digital experiences, from online shopping to streaming platforms. Still, the rationale behind their suggestions often remains opaque to users. While some systems employ a graph-based approach,…

Inspired by the exceptional general intelligence of Large Language Models (LLMs), researchers have begun to explore their application in pioneering the next generation of recommender systems - systems that are conversational, explainable,…

Information Retrieval · Computer Science 2024-08-06 Wensheng Lu , Jianxun Lian , Wei Zhang , Guanghua Li , Mingyang Zhou , Hao Liao , Xing Xie

Large Language Models have shown great success in recommender systems. However, the limited and sparse nature of user data often restricts the LLM's ability to effectively model behavior patterns. To address this, existing studies have…

Information Retrieval · Computer Science 2026-04-17 Lei Guo , Hongyun Yang , Pengjie Ren , Tong Chen , Hui Liu , Zhumin Chen

The rapid development of Large Language Models (LLMs) creates new opportunities for recommender systems, especially by exploiting the side information (e.g., descriptions and analyses of items) generated by these models. However, aligning…

Information Retrieval · Computer Science 2025-04-14 Guixian Zhang , Guan Yuan , Debo Cheng , Lin Liu , Jiuyong Li , Shichao Zhang

Modeling user preferences across domains remains a key challenge in slate recommendation (i.e. recommending an ordered sequence of items) research. We investigate how Large Language Models (LLM) can effectively act as world models of user…

Information Retrieval · Computer Science 2025-11-07 Baptiste Bonin , Maxime Heuillet , Audrey Durand

Large Language Models (LLMs) empower recommendation systems through their advanced reasoning and planning capabilities. However, the dynamic nature of user interests and content poses a significant challenge: While initial fine-tuning…

Information Retrieval · Computer Science 2025-10-24 Changping Meng , Hongyi Ling , Jianling Wang , Yifan Liu , Shuzhou Zhang , Dapeng Hong , Mingyan Gao , Onkar Dalal , Ed Chi , Lichan Hong , Haokai Lu , Ningren Han

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

The sequential recommendation problem has attracted considerable research attention in the past few years, leading to the rise of numerous recommendation models. In this work, we explore how Large Language Models (LLMs), which are nowadays…

Information Retrieval · Computer Science 2025-01-14 Artun Boz , Wouter Zorgdrager , Zoe Kotti , Jesse Harte , Panos Louridas , Dietmar Jannach , Vassilios Karakoidas , Marios Fragkoulis

Human daily behavior unfolds as complex sequences shaped by intentions, preferences, and context. Effectively modeling these behaviors is crucial for intelligent systems such as personal assistants and recommendation engines. While recent…

Computation and Language · Computer Science 2026-04-28 Fanjin Meng , Jingtao Ding , Nian Li , Yizhou Sun , Yong Li

Large Language Models (LLMs) have demonstrated remarkable capabilities in reasoning, generalization, and simulating human-like behavior across a wide range of tasks. These strengths present new opportunities to enhance traditional…

Information Retrieval · Computer Science 2025-12-01 Nachiket Subbaraman , Jaskinder Sarai , Aniruddh Nath , Lichan Hong , Lukasz Heldt , Li Wei , Zhe Zhao

The rapid advancement of Large Language Models (LLMs) has opened new opportunities in recommender systems by enabling zero-shot recommendation without conventional training. Despite their potential, most existing works rely solely on users'…

Computation and Language · Computer Science 2026-05-01 Seunghwan Bang , Hwanjun Song

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

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

Large Language Models (LLMs) have made it possible for recommendation systems to interact with users in open-ended conversational interfaces. In order to personalize LLM responses, it is crucial to elicit user preferences, especially when…

Artificial Intelligence · Computer Science 2025-10-15 Ali Montazeralghaem , Guy Tennenholtz , Craig Boutilier , Ofer Meshi

Recommender systems are widely used in online services, with embedding-based models being particularly popular due to their expressiveness in representing complex signals. However, these models often function as a black box, making them…

Information Retrieval · Computer Science 2024-06-25 Yuxuan Lei , Jianxun Lian , Jing Yao , Xu Huang , Defu Lian , Xing Xie
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