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Related papers: CoRAL: Collaborative Retrieval-Augmented Large Lan…

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Recently, the personalization of Large Language Models (LLMs) to generate content that aligns with individual user preferences has garnered widespread attention. Personalized Retrieval-Augmented Generation (RAG), which retrieves relevant…

Information Retrieval · Computer Science 2025-04-09 Teng Shi , Jun Xu , Xiao Zhang , Xiaoxue Zang , Kai Zheng , Yang Song , Han Li

Recently, large language models (LLMs) have been widely used as recommender systems, owing to their reasoning capability and effectiveness in handling cold-start items. A common approach prompts an LLM with a target user's purchase history…

Information Retrieval · Computer Science 2026-04-23 Sunwoo Kim , Geon Lee , Kyungho Kim , Jaemin Yoo , Kijung Shin

Narrative-driven recommendation (NDR) presents an information access problem where users solicit recommendations with verbose descriptions of their preferences and context, for example, travelers soliciting recommendations for points of…

Information Retrieval · Computer Science 2023-07-24 Sheshera Mysore , Andrew McCallum , Hamed Zamani

Conventional recommendation methods have achieved notable advancements by harnessing collaborative or sequential information from user behavior. Recently, large language models (LLMs) have gained prominence for their capabilities in…

Information Retrieval · Computer Science 2026-01-21 Sichun Luo , Yuxuan Yao , Bowei He , Wei Shao , Jian Xu , Yinya Huang , Aojun Zhou , Xinyi Zhang , Yuanzhang Xiao , Hanxu Hou , Mingjie Zhan , Linqi Song

Despite their remarkable reasoning capabilities across diverse domains, large language models (LLMs) face fundamental challenges in natively functioning as generative reasoning recommendation models (GRRMs), where the intrinsic modeling gap…

Information Retrieval · Computer Science 2025-10-24 Minjie Hong , Zetong Zhou , Zirun Guo , Ziang Zhang , Ruofan Hu , Weinan Gan , Jieming Zhu , Zhou Zhao

Large Language Models (LLMs) are increasingly prominent in the recommendation systems domain. Existing studies usually utilize in-context learning or supervised fine-tuning on task-specific data to align LLMs into recommendations. However,…

Information Retrieval · Computer Science 2024-06-21 Zhong Guan , Likang Wu , Hongke Zhao , Ming He , Jianpin Fan

Multilingual retrieval-augmented generation (mRAG) is often implemented within a fixed retrieval space, typically via query or document translation or multilingual embedding vector representations. However, this approach may be inadequate…

Computation and Language · Computer Science 2026-04-29 Nayeon Lee , Jiwoo Song , Byeongcheol Kang

Complementary recommendations play a crucial role in e-commerce by enhancing user experience through suggestions of compatible items. Accurate classification of complementary item relationships requires reliable labels, but their creation…

Information Retrieval · Computer Science 2025-09-09 Chihiro Yamasaki , Kai Sugahara , Kazushi Okamoto

Recent advancements in Recommender Systems (RS) have incorporated Reinforcement Learning (RL), framing the recommendation as a Markov Decision Process (MDP). However, offline RL policies trained on static user data are vulnerable to…

Information Retrieval · Computer Science 2025-01-24 Jie Wang , Alexandros Karatzoglou , Ioannis Arapakis , Joemon M. Jose

Exploration, the act of broadening user experiences beyond their established preferences, is challenging in large-scale recommendation systems due to feedback loops and limited signals on user exploration patterns. Large Language Models…

Large Language Models are typically trained with next-turn rewards, limiting their ability to optimize for long-term interaction. As a result, they often respond passively to ambiguous or open-ended user requests, failing to help users…

Artificial Intelligence · Computer Science 2025-07-31 Shirley Wu , Michel Galley , Baolin Peng , Hao Cheng , Gavin Li , Yao Dou , Weixin Cai , James Zou , Jure Leskovec , Jianfeng Gao

Large Language Models (LLMs) have emerged as a promising paradigm for next-generation recommender systems, offering strong semantic understanding and natural-language reasoning abilities. Despite recent progress, current LLM-based…

Information Retrieval · Computer Science 2026-05-11 Shijun Li , Wooseong Yang , Yu Wang , Tianxin Wei , Joydeep Ghosh

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

Large language models (LLMs) have recently been used as backbones for recommender systems. However, their performance often lags behind conventional methods in standard tasks like retrieval. We attribute this to a mismatch between LLMs'…

Information Retrieval · Computer Science 2024-04-02 Yuwei Cao , Nikhil Mehta , Xinyang Yi , Raghunandan Keshavan , Lukasz Heldt , Lichan Hong , Ed H. Chi , Maheswaran Sathiamoorthy

Large language models (LLMs) have recently received significant attention for their exceptional capabilities. Despite extensive efforts in developing general-purpose LLMs that can be utilized in various natural language processing (NLP)…

Information Retrieval · Computer Science 2023-06-08 Fan Yang , Zheng Chen , Ziyan Jiang , Eunah Cho , Xiaojiang Huang , Yanbin Lu

Text-based recommendation holds a wide range of practical applications due to its versatility, as textual descriptions can represent nearly any type of item. However, directly employing the original item descriptions may not yield optimal…

Computation and Language · Computer Science 2024-04-03 Hanjia Lyu , Song Jiang , Hanqing Zeng , Yinglong Xia , Qifan Wang , Si Zhang , Ren Chen , Christopher Leung , Jiajie Tang , Jiebo Luo

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

Personalized recommendation requires models that capture sequential user preferences while remaining robust to sparse feedback and semantic ambiguity. Recent work has explored large language models (LLMs) as recommenders and re-rankers, but…

Information Retrieval · Computer Science 2026-04-22 Siqi Liang , Xiawei Wang , Yudi Zhang , Jiaying Zhou

Click-Through Rate (CTR) prediction is crucial for Recommendation System(RS), aiming to provide personalized recommendation services for users in many aspects such as food delivery, e-commerce and so on. However, traditional RS relies on…

Information Retrieval · Computer Science 2024-08-22 Zhizhong Wan , Bin Yin , Junjie Xie , Fei Jiang , Xiang Li , Wei Lin

Multilingual retrieval-augmented generation (MRAG) requires models to effectively acquire and integrate beneficial external knowledge from multilingual collections. However, most existing studies employ a unitive process where queries of…

Computation and Language · Computer Science 2026-04-23 Rui Qi , Fengran Mo , Yufeng Chen , Xue Zhang , Shuo Wang , Hongliang Li , Jinan Xu , Meng Jiang , Jian-Yun Nie , Kaiyu Huang