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When adapting Large Language Models for Recommendation (LLMRec), it is crucial to integrate collaborative information. Existing methods achieve this by learning collaborative embeddings in LLMs' latent space from scratch or by mapping from…

Information Retrieval · Computer Science 2024-06-06 Yang Zhang , Keqin Bao , Ming Yan , Wenjie Wang , Fuli Feng , Xiangnan He

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

Collaborative filtering recommender systems (CF-RecSys) have shown successive results in enhancing the user experience on social media and e-commerce platforms. However, as CF-RecSys struggles under cold scenarios with sparse user-item…

Information Retrieval · Computer Science 2024-06-04 Sein Kim , Hongseok Kang , Seungyoon Choi , Donghyun Kim , Minchul Yang , Chanyoung Park

Large Language Models (LLMs) demonstrate remarkable capabilities in leveraging comprehensive world knowledge and sophisticated reasoning mechanisms for recommendation tasks. However, a notable limitation lies in their inability to…

Information Retrieval · Computer Science 2025-04-15 Zihan Wang , Jinghao Lin , Xiaocui Yang , Yongkang Liu , Shi Feng , Daling Wang , Yifei Zhang

Despite the success of conventional collaborative filtering (CF) approaches for recommendation systems, they exhibit limitations in leveraging semantic knowledge within the textual attributes of users and items. Recent focus on the…

Information Retrieval · Computer Science 2024-08-19 Zhongzhou Liu , Hao Zhang , Kuicai Dong , Yuan Fang

Recommender systems have seen significant advancements with the influence of deep learning and graph neural networks, particularly in capturing complex user-item relationships. However, these graph-based recommenders heavily depend on…

Information Retrieval · Computer Science 2024-12-12 Xubin Ren , Wei Wei , Lianghao Xia , Lixin Su , Suqi Cheng , Junfeng Wang , Dawei Yin , Chao Huang

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

The rise of large language models (LLMs) has opened new opportunities in Recommender Systems (RSs) by enhancing user behavior modeling and content understanding. However, current approaches that integrate LLMs into RSs solely utilize either…

Information Retrieval · Computer Science 2024-03-26 Yunjia Xi , Weiwen Liu , Jianghao Lin , Chuhan Wu , Bo Chen , Ruiming Tang , Weinan Zhang , Yong Yu

Recommender systems in concert with Large Language Models (LLMs) present promising avenues for generating semantically-informed recommendations. However, LLM-based recommenders exhibit a tendency to overemphasize semantic correlations…

Computation and Language · Computer Science 2025-08-15 Minhao Wang , Yunhang He , Cong Xu , Zhangchi Zhu , Wei Zhang

Recently, there has been growing interest in developing the next-generation recommender systems (RSs) based on pretrained large language models (LLMs). However, the semantic gap between natural language and recommendation tasks is still not…

Information Retrieval · Computer Science 2024-02-23 Yaochen Zhu , Liang Wu , Qi Guo , Liangjie Hong , Jundong Li

Involving collaborative information in Large Language Models (LLMs) is a promising technique for adapting LLMs for recommendation. Existing methods achieve this by concatenating collaborative features with text tokens into a unified…

Information Retrieval · Computer Science 2024-10-28 Yuting Liu , Jinghao Zhang , Yizhou Dang , Yuliang Liang , Qiang Liu , Guibing Guo , Jianzhe Zhao , Xingwei Wang

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

The long-tail recommendation is a challenging task for traditional recommender systems, due to data sparsity and data imbalance issues. The recent development of large language models (LLMs) has shown their abilities in complex reasoning,…

Information Retrieval · Computer Science 2024-03-12 Junda Wu , Cheng-Chun Chang , Tong Yu , Zhankui He , Jianing Wang , Yupeng Hou , Julian McAuley

Recently, large language models (LLMs) have shown great potential in recommender systems, either improving existing recommendation models or serving as the backbone. However, there exists a large semantic gap between LLMs and recommender…

Information Retrieval · Computer Science 2024-04-22 Bowen Zheng , Yupeng Hou , Hongyu Lu , Yu Chen , Wayne Xin Zhao , Ming Chen , Ji-Rong Wen

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

This paper explores the use of Large Language Models (LLMs) for sequential recommendation, which predicts users' future interactions based on their past behavior. We introduce a new concept, "Integrating Recommendation Systems as a New…

Information Retrieval · Computer Science 2024-12-24 Kai Zheng , Qingfeng Sun , Can Xu , Peng Yu , Qingwei Guo

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

Recommending cold items remains a significant challenge in billion-scale online recommendation systems. While warm items benefit from historical user behaviors, cold items rely solely on content features, limiting their recommendation…

Information Retrieval · Computer Science 2024-12-30 Feiran Huang , Yuanchen Bei , Zhenghang Yang , Junyi Jiang , Hao Chen , Qijie Shen , Senzhang Wang , Fakhri Karray , Philip S. Yu

Large language models (LLMs) have demonstrated prominent reasoning capabilities in recommendation tasks by transforming them into text-generation tasks. However, existing approaches either disregard or ineffectively model the user-item…

Information Retrieval · Computer Science 2024-11-19 Xinfeng Wang , Jin Cui , Fumiyo Fukumoto , Yoshimi Suzuki

Recent advances in Large Language Models (LLMs) have demonstrated promising performance in sequential recommendation tasks, leveraging their superior language understanding capabilities. However, existing LLM-based recommendation approaches…

Information Retrieval · Computer Science 2024-12-10 Minglai Shao , Hua Huang , Qiyao Peng , Hongtao Liu
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