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The deep integration of foundation models (FM) with federated learning (FL) enhances personalization and scalability for diverse downstream tasks, making it crucial in sensitive domains like healthcare. Achieving group fairness has become…

Machine Learning · Computer Science 2025-06-24 Yuning Yang , Han Yu , Tianrun Gao , Xiaodong Xu , Guangyu Wang

Parameter-efficient fine-tuning (PEFT) of vision-language models (VLMs) excels in various vision tasks thanks to the rich knowledge and generalization ability of VLMs. However, recent studies revealed that such fine-tuned VLMs are…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Nayeong Kim , Seong Joon Oh , Suha Kwak

Ensuring fairness in Graph Neural Networks is fundamental to promoting trustworthy and socially responsible machine learning systems. In response, numerous fair graph learning methods have been proposed in recent years. However, most of…

Machine Learning · Computer Science 2025-12-29 Zichong Wang , Zhipeng Yin , Liping Yang , Jun Zhuang , Rui Yu , Qingzhao Kong , Wenbin Zhang

Federated learning (FL) has emerged as a promising collaborative and secure paradigm for training a model from decentralized data without compromising privacy. Group fairness and client fairness are two dimensions of fairness that are…

Machine Learning · Computer Science 2023-12-12 Cong Su , Guoxian Yu , Jun Wang , Hui Li , Qingzhong Li , Han Yu

Federated learning (FL) enables collaborative model training across decentralized clients without sharing local data, but is challenged by heterogeneity in data, computation, and communication. Pretrained vision-language models (VLMs), with…

Machine Learning · Computer Science 2025-06-27 Yuguang Zhang , Kuangpu Guo , Zhihe Lu , Yunbo Wang , Jian Liang

Vision-Language Models (VLMs) are increasingly deployed in socially consequential settings, raising concerns about social bias driven by demographic cues. A central challenge in measuring such social bias is attribution under visual…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Haodong Chen , Qiang Huang , Jiaqi Zhao , Qiuping Jiang , Xiaojun Chang , Jun Yu

Multi-modal Large Language Models (MLLMs) have dramatically advanced the research field and delivered powerful vision-language understanding capabilities. However, these models often inherit deep-rooted social biases from their training…

Computation and Language · Computer Science 2025-08-21 Harry Cheng , Yangyang Guo , Qingpei Guo , Ming Yang , Tian Gan , Weili Guan , Liqiang Nie

Federated Learning (FL) enables collaborative model training across decentralized clients without sharing private data. However, FL suffers from biased global models due to non-IID and long-tail data distributions. We propose…

Machine Learning · Computer Science 2026-01-08 Jingrui Zhang , Yimeng Xu , Shujie Li , Feng Liang , Haihan Duan , Yanjie Dong , Victor C. M. Leung , Xiping Hu

Large Language Models (LLMs) exhibit socio-economic biases that can propagate into downstream tasks. While prior studies have questioned whether intrinsic bias in LLMs affects fairness at the downstream task level, this work empirically…

Computation and Language · Computer Science 2025-09-23 'Mina Arzaghi' , 'Alireza Dehghanpour Farashah' , 'Florian Carichon' , ' Golnoosh Farnadi'

As Large Language Models (LLMs) have risen in prominence over the past few years, there has been concern over the potential biases in LLMs inherited from the training data. Previous studies have examined how LLMs exhibit implicit bias, such…

Computation and Language · Computer Science 2025-12-30 Lake Yin , Fan Huang

Federated learning (FL) is an emerging machine learning paradigm designed to address the challenge of data silos, attracting considerable attention. However, FL encounters persistent issues related to fairness and data privacy. To tackle…

Cryptography and Security · Computer Science 2026-01-08 Xinpeng Ling , Jie Fu , Kuncan Wang , Huifa Li , Tong Cheng , Zhili Chen

We introduce FedSGM, a unified framework for federated constrained optimization that addresses four major challenges in federated learning (FL): functional constraints, communication bottlenecks, local updates, and partial client…

Machine Learning · Computer Science 2026-01-26 Antesh Upadhyay , Sang Bin Moon , Abolfazl Hashemi

Many fairness goals are defined at a population level that misaligns with siloed data collection, which remains unsharable due to privacy regulations. Horizontal federated learning (FL) enables collaborative modeling across clients with…

Machine Learning · Statistics 2026-02-24 Arthur Charpentier , Agathe Fernandes Machado , Olivier Côté , François Hu

Text-to-image diffusion models, such as Stable Diffusion, have demonstrated remarkable capabilities in generating high-quality and diverse images from natural language prompts. However, recent studies reveal that these models often…

Machine Learning · Computer Science 2025-10-27 Zihao Fu , Ryan Brown , Shun Shao , Kai Rawal , Eoin Delaney , Chris Russell

Vision-language pre-training (VLP) has emerged as an effective scheme for multimodal representation learning, but its reliance on large-scale multimodal data poses significant challenges for medical applications. Federated learning (FL)…

Machine Learning · Computer Science 2024-11-25 Zitao Shuai , Chenwei Wu , Zhengxu Tang , Liyue Shen

Fairness has emerged as a critical problem in federated learning (FL). In this work, we identify a cause of unfairness in FL -- conflicting gradients with large differences in the magnitudes. To address this issue, we propose the federated…

Machine Learning · Computer Science 2021-06-17 Zheng Wang , Xiaoliang Fan , Jianzhong Qi , Chenglu Wen , Cheng Wang , Rongshan Yu

Vision-Language Models (VLMs) like CLIP have demonstrated remarkable generalization in zero- and few-shot settings, but adapting them efficiently to decentralized, heterogeneous data remains a challenge. While prompt tuning has emerged as a…

Computer Vision and Pattern Recognition · Computer Science 2026-03-02 Sajjad Ghiasvand , Mahnoosh Alizadeh , Ramtin Pedarsani

Demographic bias is one of the major challenges for face recognition systems. The majority of existing studies on demographic biases are heavily dependent on specific demographic groups or demographic classifier, making it difficult to…

Computer Vision and Pattern Recognition · Computer Science 2024-09-17 Tetsushi Ohki , Yuya Sato , Masakatsu Nishigaki , Koichi Ito

Federated learning (FL) is a distributed learning technique that trains a shared model over distributed data in a privacy-preserving manner. Unfortunately, FL's performance degrades when there is (i) variability in client characteristics in…

Machine Learning · Computer Science 2021-10-28 Muhammad Tahir Munir , Muhammad Mustansar Saeed , Mahad Ali , Zafar Ayyub Qazi , Ihsan Ayyub Qazi

Federated Learning (FL) is an emerging framework for distributed processing of large data volumes by edge devices subject to limited communication bandwidths, heterogeneity in data distributions and computational resources, as well as…

Machine Learning · Computer Science 2022-04-11 Yonghai Gong , Yichuan Li , Nikolaos M. Freris