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As large language models (LLMs) improve in their capacity to serve as personal AI assistants, their ability to output uniquely tailored, personalized responses that align with the soft preferences of their users is essential for enhancing…

Human-Computer Interaction · Computer Science 2025-05-15 Jessica Y. Bo , Tianyu Xu , Ishan Chatterjee , Katrina Passarella-Ward , Achin Kulshrestha , D Shin

Federated recommendation applies federated learning techniques in recommendation systems to help protect user privacy by exchanging models instead of raw user data between user devices and the central server. Due to the heterogeneity in…

Information Retrieval · Computer Science 2022-08-22 Sichun Luo , Yuanzhang Xiao , Linqi Song

Large language models (LLMs) are powerful tools but are often expensive to deploy at scale. LLM query routing mitigates this by dynamically assigning queries to models of varying cost and quality to obtain a desired trade-off. Prior query…

Large language models (LLMs) have recently soared in popularity due to their ease of access and the unprecedented ability to synthesize text responses to diverse user questions. However, LLMs like ChatGPT present significant limitations in…

Human-Computer Interaction · Computer Science 2023-08-08 Peiling Jiang , Jude Rayan , Steven P. Dow , Haijun Xia

Large language models (LLMs) have become a popular approach for simulating human behaviors, yet it remains unclear if LLMs are necessary for all simulation tasks. We study a broad family of close-ended simulation tasks, with applications…

Computation and Language · Computer Science 2026-04-17 Joseph Suh , Suhong Moon , Serina Chang

Ensuring Large Language Models (LLMs) align with diverse human preferences while preserving privacy and fairness remains a challenge. Existing methods, such as Reinforcement Learning from Human Feedback (RLHF), rely on centralized data…

Machine Learning · Computer Science 2025-03-14 Mahmoud Srewa , Tianyu Zhao , Salma Elmalaki

Last year has witnessed the considerable interest of Large Language Models (LLMs) for their potential applications in recommender systems, which may mitigate the persistent issue of data sparsity. Though large efforts have been made for…

Information Retrieval · Computer Science 2024-05-14 Ziwei Zhao , Fake Lin , Xi Zhu , Zhi Zheng , Tong Xu , Shitian Shen , Xueying Li , Zikai Yin , Enhong Chen

In an ideal design pipeline, user interface (UI) design is intertwined with user research to validate decisions, yet studies are often resource-constrained during early exploration. Recent advances in multimodal large language models…

Personalizing large language models (LLMs) to accommodate diverse user preferences is essential for enhancing alignment and user satisfaction. Traditional reinforcement learning from human feedback (RLHF) approaches often rely on monolithic…

Machine Learning · Computer Science 2025-04-22 Avinandan Bose , Zhihan Xiong , Yuejie Chi , Simon Shaolei Du , Lin Xiao , Maryam Fazel

With the expansion of business scales and scopes on online platforms, multi-scenario matching has become a mainstream solution to reduce maintenance costs and alleviate data sparsity. The key to effective multi-scenario recommendation lies…

Information Retrieval · Computer Science 2025-06-24 Haotong Du , Yaqing Wang , Fei Xiong , Lei Shao , Ming Liu , Hao Gu , Quanming Yao , Zhen Wang

We propose a method that uses large language models to assist graph machine learning under personalization and privacy constraints. The approach combines data augmentation for sparse graphs, prompt and instruction tuning to adapt foundation…

Machine Learning · Computer Science 2025-11-13 Sai Puppala , Ismail Hossain , Md Jahangir Alam , Tanzim Ahad , Sajedul Talukder

With the rapid development of Large Language Models (LLMs), various explorations have arisen to utilize LLMs capability of context understanding on recommender systems. While pioneering strategies have primarily transformed traditional…

Information Retrieval · Computer Science 2024-02-27 Naicheng Guo , Hongwei Cheng , Qianqiao Liang , Linxun Chen , Bing Han

Large Language Models (LLMs), such as ChatGPT, exhibit advanced capabilities in generating text, images, and videos. However, their effective use remains constrained by challenges in prompt formulation, personalization, and opaque…

Human-Computer Interaction · Computer Science 2025-03-04 Si Thu , A. Baki Kocaballi

Large language models (LLMs) are essential tools that users employ across various scenarios, so evaluating their performance and guiding users in selecting the suitable service is important. Although many benchmarks exist, they mainly focus…

Computation and Language · Computer Science 2024-09-23 Jiayin Wang , Fengran Mo , Weizhi Ma , Peijie Sun , Min Zhang , Jian-Yun Nie

Recent advancements in Large Language Models (LLMs) have demonstrated exceptional performance across a wide range of tasks, generating significant interest in their application to recommendation systems. However, existing methods have not…

Computation and Language · Computer Science 2025-04-28 Jieyong Kim , Hyunseo Kim , Hyunjin Cho , SeongKu Kang , Buru Chang , Jinyoung Yeo , Dongha Lee

Property graphs are widely used in domains such as healthcare, finance, and social networks, but they often contain errors due to inconsistencies, missing data, or schema violations. Traditional rule-based and heuristic-driven graph repair…

Computation and Language · Computer Science 2025-07-08 Hrishikesh Terdalkar , Angela Bonifati , Andrea Mauri

Usability is a key factor in the effectiveness of recommender systems. However, the analysis of user interfaces is a time-consuming process that requires expertise. Recent advances in multimodal large language models (LLMs) offer promising…

Human-Computer Interaction · Computer Science 2025-11-19 Sebastian Lubos , Alexander Felfernig , Damian Garber , Viet-Man Le , Thi Ngoc Trang Tran

We address the personalized policy learning problem using longitudinal mobile health application usage data. Personalized policy represents a paradigm shift from developing a single policy that may prescribe personalized decisions by…

Methodology · Statistics 2020-01-13 Xinyu Hu , Min Qian , Bin Cheng , Ying Kuen Cheung

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

Graphs are widely used for modeling relational data in real-world scenarios, such as social networks and urban computing. Existing LLM-based graph analysis approaches either integrate graph neural networks (GNNs) for specific machine…

Artificial Intelligence · Computer Science 2025-11-04 Xin Li , Qizhi Chu , Yubin Chen , Yang Liu , Yaoqi Liu , Zekai Yu , Weize Chen , Chen Qian , Chuan Shi , Cheng Yang