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arXiv 2601.06931cs.CVcs.AIcs.CL

通过真实照片生成面部-only反事实来衡量视觉语言模型中的社会偏见

Measuring Social Bias in Vision-Language Models with Face-Only Counterfactuals from Real Photos

School of Intelligence Science and Engineering, Harbin Institute of Technology (Shenzhen)(哈尔滨工业大学(深圳)智能科学与工程学院);School of Information Science and Engineering, Ningbo University(宁波大学信息科学与工程学院);School of Information Science and Technology, University of Science and Technology of China(中国科学技术大学信息科学与技术学院)

Haodong Chen, Qiang Huang, Jiaqi Zhao, Qiuping Jiang, Xiaojun Chang, Jun Yu

AI总结:

本文提出通过真实照片生成面部-only反事实来评估视觉语言模型中的社会偏见,构建了FOCUS数据集和REFLECT基准,发现严格视觉控制下仍存在种族性别差异,强调了反事实审计和任务设计的重要性。

摘要:

视觉语言模型(VLMs)越来越多地应用于具有社会影响的场景,引发了关于由人口特征线索驱动的社会偏见的担忧。衡量此类社会偏见的核心挑战是在视觉混淆下进行归因:现实图像将种族和性别与背景和服装等相关因素纠缠在一起,模糊了归因。我们提出了一种面部-only反事实评估范式,该范式在保持现实图像真实感的同时隔离了人口效应。从真实照片开始,通过仅编辑与种族和性别相关的面部属性生成反事实变体,保持所有其他视觉因素不变。基于此范式,我们构建了包含6种职业和10种人口群体的480张场景匹配反事实图像的FOCUS数据集,并提出了包含三个决策导向任务的REFLECT基准:二选一强制选择、多选社会经济推断和数字薪资推荐。在五个最先进的VLMs上的实验表明,在严格视觉控制下人口差异仍然存在,并且在不同任务形式中变化显著。这些发现强调了受控反事实审计的必要性,并突显了任务设计在评估多模态模型社会偏见中的关键作用。

英文摘要:

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 confounding: real-world images entangle race and gender with correlated factors such as background and clothing, obscuring attribution. We propose a \textbf{face-only counterfactual evaluation paradigm} that isolates demographic effects while preserving real-image realism. Starting from real photographs, we generate counterfactual variants by editing only facial attributes related to race and gender, keeping all other visual factors fixed. Based on this paradigm, we construct \textbf{FOCUS}, a dataset of 480 scene-matched counterfactual images across six occupations and ten demographic groups, and propose \textbf{REFLECT}, a benchmark comprising three decision-oriented tasks: two-alternative forced choice, multiple-choice socioeconomic inference, and numeric salary recommendation. Experiments on five state-of-the-art VLMs reveal that demographic disparities persist under strict visual control and vary substantially across task formulations. These findings underscore the necessity of controlled, counterfactual audits and highlight task design as a critical factor in evaluating social bias in multimodal models.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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