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The emergence of Large Language Models (LLMs), has opened exciting possibilities for constructing computational simulations designed to replicate human behavior accurately. Current research suggests that LLM-based agents become increasingly…

Computation and Language · Computer Science 2024-12-18 Amir Taubenfeld , Yaniv Dover , Roi Reichart , Ariel Goldstein

LLM-based agents have gained considerable attention for their decision-making skills and ability to handle complex tasks. Recognizing the current gap in leveraging agent capabilities for multi-agent collaboration in recommendation systems,…

Information Retrieval · Computer Science 2024-11-04 Zhefan Wang , Yuanqing Yu , Wendi Zheng , Weizhi Ma , Min Zhang

Recommender systems, which can significantly help users find their interested items from the information era, has attracted an increasing attention from both the scientific and application society. One of the widest applied recommendation…

Information Retrieval · Computer Science 2015-05-19 Lu Yu , Chuang Liu , Zi-Ke Zhang

To leverage user behavior data from the Internet more effectively in recommender systems, this paper proposes a novel collaborative filtering (CF) method called Local Collaborative Filtering (LCF). LCF utilizes local similarities among…

Information Retrieval · Computer Science 2025-11-18 Zhaoxin Shen , Dan Wu

Environments built for people are increasingly operated by a new class of economic actors: LLM-powered software agents making decisions on our behalf. These decisions range from our purchases to travel plans to medical treatment selection.…

Artificial Intelligence · Computer Science 2026-02-25 Manuel Cherep , Chengtian Ma , Abigail Xu , Maya Shaked , Pattie Maes , Nikhil Singh

Traditional recommender systems usually take the user-platform paradigm, where users are directly exposed under the control of the platform's recommendation algorithms. However, the defect of recommendation algorithms may put users in very…

Computation and Language · Computer Science 2025-06-02 Wujiang Xu , Yunxiao Shi , Zujie Liang , Xuying Ning , Kai Mei , Kun Wang , Xi Zhu , Min Xu , Yongfeng Zhang

Artificial General Intelligence falls short when communicating role specific nuances to other systems. This is more pronounced when building autonomous LLM agents capable and designed to communicate with each other for real world problem…

Machine Learning · Computer Science 2024-03-19 Rabimba Karanjai , Weidong Shi

Reinforcement learning (RL) recommender systems often rely on static datasets that fail to capture the fluid, ever changing nature of user preferences in real-world scenarios. Meanwhile, generative AI techniques have emerged as powerful…

Information Retrieval · Computer Science 2025-09-10 Danial Ebrat , Eli Paradalis , Luis Rueda

User simulators can rapidly generate a large volume of timely user behavior data, providing a testing platform for reinforcement learning-based recommender systems, thus accelerating their iteration and optimization. However, prevalent user…

Information Retrieval · Computer Science 2024-12-24 Zijian Zhang , Shuchang Liu , Ziru Liu , Rui Zhong , Qingpeng Cai , Xiangyu Zhao , Chunxu Zhang , Qidong Liu , Peng Jiang

Due to strong capabilities in conducting fluent, multi-turn conversations with users, Large Language Models (LLMs) have the potential to further improve the performance of Conversational Recommender System (CRS). Unlike the aimless…

Information Retrieval · Computer Science 2024-02-05 Jiabao Fang , Shen Gao , Pengjie Ren , Xiuying Chen , Suzan Verberne , Zhaochun Ren

Recent research has explored using Large Language Models for recommendation tasks by transforming user interaction histories and item metadata into text prompts, then having the LLM produce rankings or recommendations. A promising approach…

Information Retrieval · Computer Science 2025-10-03 Bo Ma , LuYao Liu , Simon Lau , Chandler Yuan , and XueY Cui , Rosie Zhang

The evolution of recommender systems has shifted from traditional collaborative filtering to LLM-based agentic systems, which rely on semantic user and item memories to make predictions. However, existing agents maintain these memories in…

Information Retrieval · Computer Science 2026-04-29 Weixin Chen , Yuhan Zhao , Jingyuan Huang , Zihe Ye , Clark Mingxuan Ju , Tong Zhao , Neil Shah , Li Chen , Yongfeng Zhang

Latent Factor Model (LFM) is one of the most successful methods for Collaborative filtering (CF) in the recommendation system, in which both users and items are projected into a joint latent factor space. Base on matrix factorization…

Information Retrieval · Computer Science 2021-05-19 Jiansheng Fang , Xiaoqing Zhang , Yan Hu , Yanwu Xu , Ming Yang , Jiang Liu

Agentic systems powered by Large Language Models (LLMs) have shown strong potential in recommender systems but remain hindered by several challenges. Fine-tuning LLMs is parameter-inefficient, and prompt-based agentic reasoning is limited…

Information Retrieval · Computer Science 2026-02-10 Minh-Duc Nguyen , Hai-Dang Kieu , Dung D. Le

Item-based Collaborative Filtering(short for ICF) has been widely adopted in recommender systems in industry, owing to its strength in user interest modeling and ease in online personalization. By constructing a user's profile with the…

Information Retrieval · Computer Science 2018-11-13 Feng Xue , Xiangnan He , Xiang Wang , Jiandong Xu , Kai Liu , Richang Hong

Large Language Models (LLMs) have emerged as formidable instruments capable of comprehending and producing human-like text. This paper explores the potential of LLMs, to shape user perspectives and subsequently influence their decisions on…

Artificial Intelligence · Computer Science 2024-09-04 Ganesh Prasath Ramani , Shirish Karande , Santhosh V , Yash Bhatia

Consider the process of collective decision-making, in which a group of individuals interactively select a preferred outcome from among a universe of alternatives. In this context, "representation" is the activity of making an individual's…

Designing and evaluating personalized and proactive assistant agents remains challenging due to the time, cost, and ethical concerns associated with human-in-the-loop experimentation. Existing Human-Computer Interaction (HCI) methods often…

Human-Computer Interaction · Computer Science 2025-11-25 Ziyi Xuan , Yiwen Wu , Xuhai Xu , Vinod Namboodiri , Mooi Choo Chuah , Yu Yang

Existing item-based collaborative filtering (ICF) methods leverage only the relation of collaborative similarity. Nevertheless, there exist multiple relations between items in real-world scenarios. Distinct from the collaborative similarity…

Information Retrieval · Computer Science 2019-05-14 Xin Xin , Xiangnan He , Yongfeng Zhang , Yongdong Zhang , Joemon Jose

Tool learning empowers large language models (LLMs) as agents to use external tools and extend their utility. Existing methods employ one single LLM-based agent to iteratively select and execute tools, thereafter incorporating execution…

Computation and Language · Computer Science 2024-06-25 Zhengliang Shi , Shen Gao , Xiuyi Chen , Yue Feng , Lingyong Yan , Haibo Shi , Dawei Yin , Pengjie Ren , Suzan Verberne , Zhaochun Ren