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Large language models provide rich semantic priors and strong reasoning capabilities, making them promising auxiliary signals for recommendation. However, prevailing approaches either deploy LLMs as standalone recommender or apply global…

Information Retrieval · Computer Science 2025-12-29 Shanglin Yang , Zhan Shi

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

Sequential recommendation (SR) has seen significant advancements with the help of Pre-trained Language Models (PLMs). Some PLM-based SR models directly use PLM to encode user historical behavior's text sequences to learn user…

Information Retrieval · Computer Science 2024-08-15 Zekai Qu , Ruobing Xie , Chaojun Xiao , Xingwu Sun , Zhanhui Kang

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

Conventional recommender systems (RSs) face challenges in precisely capturing users' fine-grained preferences. Large language models (LLMs) have shown capabilities in commonsense reasoning and leveraging external tools that may help address…

Information Retrieval · Computer Science 2024-05-27 Yuyue Zhao , Jiancan Wu , Xiang Wang , Wei Tang , Dingxian Wang , Maarten de Rijke

The integration of Large Language Models (LLMs) into recommender systems has led to substantial performance improvements. However, this often comes at the cost of diminished recommendation diversity, which can negatively impact user…

Information Retrieval · Computer Science 2025-01-07 Jiaju Chen , Chongming Gao , Shuai Yuan , Shuchang Liu , Qingpeng Cai , Peng Jiang

Large language models (LLMs) have recently demonstrated strong potential for sequential recommendation. However, current LLM-based approaches face critical limitations in modeling users' long-term and diverse interests. First, due to…

Information Retrieval · Computer Science 2025-10-30 Jingyi Zhou , Cheng Chen , Kai Zuo , Manjie Xu , Zhendong Fu , Yibo Chen , Xu Tang , Yao Hu

Using Large Language Models (LLMs) to generate semantic features has been demonstrated as a powerful paradigm for enhancing Sequential Recommender Systems (SRS). This typically involves three stages: processing item text, extracting…

Information Retrieval · Computer Science 2026-01-29 Kainan Shi , Peilin Zhou , Ge Wang , Han Ding , Fei Wang

Deep learning has brought great progress for the sequential recommendation (SR) tasks. With advanced network architectures, sequential recommender models can be stacked with many hidden layers, e.g., up to 100 layers on real-world…

Information Retrieval · Computer Science 2021-05-13 Jiachun Wang , Fajie Yuan , Jian Chen , Qingyao Wu , Min Yang , Yang Sun , Guoxiao Zhang

Sequential recommendation (SR) aims to predict the subsequent behaviors of users by understanding their successive historical behaviors. Recently, some methods for SR are devoted to alleviating the data sparsity problem (i.e., limited…

Information Retrieval · Computer Science 2022-08-30 Ziyang Wang , Huoyu Liu , Wei Wei , Yue Hu , Xian-Ling Mao , Shaojian He , Rui Fang , Dangyang chen

Sequential recommender systems (SRS) have become the key technology in capturing user's dynamic interests and generating high-quality recommendations. Current state-of-the-art sequential recommender models are typically based on a…

Information Retrieval · Computer Science 2020-05-27 Yang Sun , Fajie Yuan , Min Yang , Guoao Wei , Zhou Zhao , Duo Liu

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

Recent research efforts have investigated how to integrate Large Language Models (LLMs) into recommendation, capitalizing on their semantic comprehension and open-world knowledge for user behavior understanding. These approaches…

Information Retrieval · Computer Science 2025-04-15 Haokai Ma , Yunshan Ma , Ruobing Xie , Lei Meng , Jialie Shen , Xingwu Sun , Zhanhui Kang , Tat-Seng Chua

Conventional sequential recommendation models have achieved remarkable success in mining implicit behavioral patterns. However, these architectures remain structurally blind to explicit user intent: they struggle to adapt when a user's…

Information Retrieval · Computer Science 2026-03-06 Fuyuan Lyu , Chenglin Luo , Qiyuan Zhang , Yupeng Hou , Haolun Wu , Xing Tang , Xue Liu , Jin L. C. Guo , Xiuqiang He

Conversational recommender systems (CRSs) aim to recommend high-quality items to users through a dialogue interface. It usually contains multiple sub-tasks, such as user preference elicitation, recommendation, explanation, and item…

Information Retrieval · Computer Science 2023-08-14 Yue Feng , Shuchang Liu , Zhenghai Xue , Qingpeng Cai , Lantao Hu , Peng Jiang , Kun Gai , Fei Sun

In session-based or sequential recommendation, it is important to consider a number of factors like long-term user engagement, multiple types of user-item interactions such as clicks, purchases etc. The current state-of-the-art supervised…

Machine Learning · Computer Science 2020-06-12 Xin Xin , Alexandros Karatzoglou , Ioannis Arapakis , Joemon M. Jose

Recently, Large Language Models (LLMs) have been widely employed in Conversational Recommender Systems (CRSs). Unlike traditional language model approaches that focus on training, all existing LLMs-based approaches are mainly centered…

Computation and Language · Computer Science 2025-09-26 Jianyu Wen , Jingyun Wang , Cilin Yan , Jiayin Cai , Xiaolong Jiang , Ying Zhang

Attribute-aware sequential recommendation entails predicting the next item a user will interact with based on a chronologically ordered history of past interactions, enriched with item attributes. Existing methods typically leverage…

Information Retrieval · Computer Science 2026-05-08 Shereen Elsayed , Ngoc Son Le , Ahmed Rashed , Lars Schmidt-Thieme

Sequential recommendation systems aim to capture users' evolving preferences from their interaction histories. Recent reasoningenhanced methods have shown promise by introducing deliberate, chain-of-thought-like processes with intermediate…

Information Retrieval · Computer Science 2025-12-17 Yifan Shao , Peilin Zhou

With large language models (LLMs) achieving remarkable breakthroughs in natural language processing (NLP) domains, LLM-enhanced recommender systems have received much attention and have been actively explored currently. In this paper, we…

Information Retrieval · Computer Science 2024-07-02 Jianghao Lin , Rong Shan , Chenxu Zhu , Kounianhua Du , Bo Chen , Shigang Quan , Ruiming Tang , Yong Yu , Weinan Zhang