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Recent advances in Large Language Models (LLMs) have shifted in recommendation systems from the discriminative paradigm to the LLM-based generative paradigm, where the recommender autoregressively generates sequences of semantic identifiers…

Information Retrieval · Computer Science 2026-03-03 Jiawei Feng , Xiaoyu Kong , Leheng Sheng , Bin Wu , Chao Yi , Feifang Yang , Xiang-Rong Sheng , Han Zhu , Xiang Wang , Jiancan Wu , Xiangnan He

Owing to the impressive general intelligence of large language models (LLMs), there has been a growing trend to integrate them into recommender systems to gain a more profound insight into human interests and intentions. Existing LLMs-based…

Information Retrieval · Computer Science 2024-10-29 Chuang Zhao , Xing Su , Ming He , Hongke Zhao , Jianping Fan , Xiaomeng Li

The growth of Massive Open Online Courses (MOOCs) presents significant challenges for personalized learning, where concept recommendation is crucial. Existing approaches typically rely on heterogeneous information networks or knowledge…

Information Retrieval · Computer Science 2025-11-27 Xiangrui Xiong , Yichuan Lu , Zifei Pan , Chang Sun

Sequential recommendation aims to predict users' future interactions by modeling collaborative filtering (CF) signals from historical behaviors of similar users or items. Traditional sequential recommenders predominantly rely on ID-based…

Information Retrieval · Computer Science 2025-06-30 Yingzhi He , Xiaohao Liu , An Zhang , Yunshan Ma , Tat-Seng Chua

While recent advancements in aligning Large Language Models (LLMs) with recommendation tasks have shown great potential and promising performance overall, these aligned recommendation LLMs still face challenges in complex scenarios. This is…

Information Retrieval · Computer Science 2025-02-18 Yi Fang , Wenjie Wang , Yang Zhang , Fengbin Zhu , Qifan Wang , Fuli Feng , Xiangnan He

Large Language Models (LLMs) have demonstrated strong potential for generative recommendation by leveraging rich semantic knowledge. However, existing LLM-based recommender systems struggle to effectively incorporate collaborative filtering…

Information Retrieval · Computer Science 2026-01-27 Fake Lin , Binbin Hu , Zhi Zheng , Xi Zhu , Ziqi Liu , Zhiqiang Zhang , Jun Zhou , Tong Xu

Large Language Models (LLMs) for Recommendation (LLM4Rec) is a promising research direction that has demonstrated exceptional performance in this field. However, its inability to capture real-time user preferences greatly limits the…

Information Retrieval · Computer Science 2025-02-26 Zheqi Lv , Tianyu Zhan , Wenjie Wang , Xinyu Lin , Shengyu Zhang , Wenqiao Zhang , Jiwei Li , Kun Kuang , Fei Wu

In recent years, large language models (LLM) have emerged as powerful tools for diverse natural language processing tasks. However, their potential for recommender systems under the generative recommendation paradigm remains relatively…

Information Retrieval · Computer Science 2023-07-11 Jianchao Ji , Zelong Li , Shuyuan Xu , Wenyue Hua , Yingqiang Ge , Juntao Tan , Yongfeng Zhang

Sequential recommendation aims to predict users' next interaction with items based on their past engagement sequence. Recently, the advent of Large Language Models (LLMs) has sparked interest in leveraging them for sequential…

Information Retrieval · Computer Science 2024-05-07 Jiayi Liao , Sihang Li , Zhengyi Yang , Jiancan Wu , Yancheng Yuan , Xiang Wang , Xiangnan He

In this paper, we address the lifelong sequential behavior incomprehension problem in large language models (LLMs) for recommendation, where LLMs struggle to extract useful information from long user behavior sequences, even within their…

Information Retrieval · Computer Science 2025-01-24 Rong Shan , Jiachen Zhu , Jianghao Lin , Chenxu Zhu , Bo Chen , Ruiming Tang , Yong Yu , Weinan Zhang

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

Recent advancements in Large Language Models (LLMs) have attracted considerable interest among researchers to leverage these models to enhance Recommender Systems (RSs). Existing work predominantly utilizes LLMs to generate knowledge-rich…

Information Retrieval · Computer Science 2024-07-25 Zhongxiang Sun , Zihua Si , Xiaoxue Zang , Kai Zheng , Yang Song , Xiao Zhang , Jun Xu

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

Large Language Models (LLMs) have been integrated into recommendation systems to enhance user behavior comprehension. The Retrieval Augmented Generation (RAG) technique is further incorporated into these systems to retrieve more relevant…

Information Retrieval · Computer Science 2025-02-12 Jian Xu , Sichun Luo , Xiangyu Chen , Haoming Huang , Hanxu Hou , Linqi Song

Large language model (LLM)-enhanced recommendation models inject LLM representations into backbone recommenders to exploit rich item text without inference-time LLM cost. However, we find that existing LLM-enhanced methods significantly…

Information Retrieval · Computer Science 2026-04-23 Zhangchi Zhu , Wei Zhang

Collaborative information from user-item interactions is a fundamental source of signal in successful recommender systems. Recently, researchers have attempted to incorporate this knowledge into large language model-based recommender…

Information Retrieval · Computer Science 2026-03-24 Shahrooz Pouryousef , Ali Montazeralghaem

With the advent of the information explosion era, the importance of recommendation systems in various applications is increasingly significant. Traditional collaborative filtering algorithms are widely used due to their effectiveness in…

Artificial Intelligence · Computer Science 2024-12-30 Xueting Lin , Zhan Cheng , Longfei Yun , Qingyi Lu , Yuanshuai Luo

The widespread adoption of Large Language Models (LLMs) as re-rankers is shifting recommender systems towards a user-centric paradigm. However, a significant gap remains: current re-rankers often lack mechanisms for fine-grained user…

Information Retrieval · Computer Science 2025-11-25 Wenxi Dai , Wujiang Xu , Pinhuan Wang , Dimitris N. Metaxas

Contemporary recommendation systems predominantly rely on ID embedding to capture latent associations among users and items. However, this approach overlooks the wealth of semantic information embedded within textual descriptions of items,…

Information Retrieval · Computer Science 2024-12-30 Jian Jia , Yipei Wang , Yan Li , Honggang Chen , Xuehan Bai , Zhaocheng Liu , Jian Liang , Quan Chen , Han Li , Peng Jiang , Kun Gai

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