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Recent advancements have showcased the potential of Large Language Models (LLMs) in executing reasoning tasks, particularly facilitated by Chain-of-Thought (CoT) prompting. While tasks like arithmetic reasoning involve clear, definitive…

Information Retrieval · Computer Science 2024-08-05 Alicia Y. Tsai , Adam Kraft , Long Jin , Chenwei Cai , Anahita Hosseini , Taibai Xu , Zemin Zhang , Lichan Hong , Ed H. Chi , Xinyang Yi

The extensive world knowledge and powerful reasoning capabilities of large language models (LLMs) have attracted significant attention in recommendation systems (RS). Specifically, The chain of thought (CoT) has been shown to improve the…

Information Retrieval · Computer Science 2025-08-22 Yu Xia , Rui Zhong , Zeyu Song , Wei Yang , Junchen Wan , Qingpeng Cai , Chi Lu , Peng Jiang

Sequential recommendation aims to predict a user's next action in large-scale recommender systems. While traditional methods often suffer from insufficient information interaction, recent generative recommendation models partially address…

Information Retrieval · Computer Science 2026-02-10 Haibo Xing , Hao Deng , Yucheng Mao , Lingyu Mu , Jinxin Hu , Yi Xu , Hao Zhang , Jiahao Wang , Shizhun Wang , Yu Zhang , Xiaoyi Zeng , Jing Zhang

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

The application of Large Language Models (LLMs) in recommender systems faces key challenges in delivering deep personalization and intelligent reasoning, especially for interactive scenarios. Current methods are often constrained by limited…

Information Retrieval · Computer Science 2025-10-17 Jiani Huang , Xingchen Zou , Lianghao Xia , Qing Li

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

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

Recommender systems are tasked to infer users' evolving preferences and rank items aligned with their intents, which calls for in-depth reasoning beyond pattern-based scoring. Recent efforts start to leverage large language models (LLMs)…

Information Retrieval · Computer Science 2026-02-16 Kehan Zheng , Deyao Hong , Qian Li , Jun Zhang , Huan Yu , Jie Jiang , Hongning Wang

Recent advances in large language models (LLMs) have enabled more semantic-aware recommendations through natural language generation. Existing LLM for recommendation (LLM4Rec) methods mostly operate in a System 1-like manner, relying on…

Information Retrieval · Computer Science 2026-01-22 Qihang Yu , Kairui Fu , Zheqi Lv , Shengyu Zhang , Xinhui Wu , Chen Lin , Feng Wei , Bo Zheng , Fei Wu

Sequential recommender systems have become increasingly important in real-world applications that model user behavior sequences to predict their preferences. However, existing sequential recommendation methods predominantly rely on…

Information Retrieval · Computer Science 2025-06-05 Enze Liu , Bowen Zheng , Xiaolei Wang , Wayne Xin Zhao , Jinpeng Wang , Sheng Chen , Ji-Rong Wen

Large language models (LLMs) have shown remarkable performance in reasoning tasks but face limitations in mathematical and complex logical reasoning. Existing methods to improve LLMs' logical capabilities either involve traceable or…

Computation and Language · Computer Science 2025-05-27 Jiahao Yuan , Dehui Du , Hao Zhang , Zixiang Di , Usman Naseem

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

Efficiently acquiring external knowledge and up-to-date information is essential for effective reasoning and text generation in large language models (LLMs). Prompting advanced LLMs with reasoning capabilities to use search engines during…

Computation and Language · Computer Science 2025-08-07 Bowen Jin , Hansi Zeng , Zhenrui Yue , Jinsung Yoon , Sercan Arik , Dong Wang , Hamed Zamani , Jiawei Han

This paper addresses two persistent challenges in sequential recommendation: (i) evidence insufficiency-cold-start sparsity together with noisy, length-varying item texts; and (ii) opaque modeling of dynamic, multi-faceted intents across…

Information Retrieval · Computer Science 2026-04-29 Yuchen Miao , Mingxuan Cui , Yitong Zhu , Yu Wang , Siyang Xu

Recommender systems play a vital role in alleviating information overload and enriching users' online experience. In the era of large language models (LLMs), LLM-based recommender systems have emerged as a prevalent paradigm for advancing…

Information Retrieval · Computer Science 2025-11-19 Zihuai Zhao , Yujuan Ding , Wenqi Fan , Qing Li

Group relative policy optimization (GRPO) has become a standard post-training paradigm for improving reasoning and preference alignment in large language models (LLMs), and has recently shown strong effectiveness in LLM-based recommender…

Information Retrieval · Computer Science 2026-03-09 Yu Wang , Yonghui Yang , Le Wu , Jiancan Wu , Hefei Xu , Hui Lin

Retrieval-augmented large language models (LLMs) leverage relevant content retrieved by information retrieval systems to generate correct responses, aiming to alleviate the hallucination problem. However, existing retriever-responder…

Computation and Language · Computer Science 2024-06-26 Taolin Zhang , Dongyang Li , Qizhou Chen , Chengyu Wang , Longtao Huang , Hui Xue , Xiaofeng He , Jun Huang

Large language models (LLMs) have shown strong potential in recommendation tasks due to their strengths in language understanding, reasoning and knowledge integration. These capabilities are especially beneficial for review-based…

Computation and Language · Computer Science 2025-09-03 Kaiwen Wei , Jinpeng Gao , Jiang Zhong , Yuming Yang , Fengmao Lv , Zhenyang Li

In information retrieval, large language models (LLMs) have demonstrated remarkable potential in text reranking tasks by leveraging their sophisticated natural language understanding and advanced reasoning capabilities. However,…

Information Retrieval · Computer Science 2025-09-22 Haowei Liu , Xuyang Wu , Guohao Sun , Zhiqiang Tao , Yi Fang

Retrieval-Augmented Generation (RAG) systems for Large Language Models (LLMs) hold promise in knowledge-intensive tasks but face limitations in complex multi-step reasoning. While recent methods have integrated RAG with chain-of-thought…

Computation and Language · Computer Science 2025-01-15 Zhongxiang Sun , Qipeng Wang , Weijie Yu , Xiaoxue Zang , Kai Zheng , Jun Xu , Xiao Zhang , Song Yang , Han Li