分析人脸识别中准确率与偏差的权衡,揭示数据集、模型和损失函数的影响。
Exploring Disparity-Accuracy Trade-offs in Face Recognition Systems: The Role of Datasets, Architectures, and Loss Functions
- 对比10个模型、4种损失函数、7个数据集,共266种配置评估性别识别性能。
- 发现数据集本身具有决定性影响,同一模型在不同数据集上偏差方向相反。
- 模型难以统一定义‘女性面孔’,因数据多样性导致泛化能力不足,适合模型开发者参考。
基于深度学习的人脸识别系统(FRS)已广泛用于身份验证和面部属性分析。其性能受模型架构、优化/损失函数和数据集三者复杂相互作用的影响。尽管准确率已超过人类水平,但对某些群体仍存在显著偏差。为设计更公平的系统,需理解三者对准确率-偏差权衡的影响。本研究针对性别预测任务,构建了10个深度学习模型,结合4种损失函数,在7个面部数据集上进行266种配置的评估。结果表明,三者均对准确率和偏差有独立及联合影响。数据集具有固有特性,使其在不同模型下表现一致,不受损失函数影响。此外,同一模型在三个‘自然场景’名人数据集上报告出相反的偏差方向。分析面部嵌入发现,模型无法统一定义‘女性面孔’与‘男性面孔’,源于数据多样性。本文为模型开发与部署提供可借鉴的实践蓝图。
原文摘要 · Abstract (English)
Automated Face Recognition Systems (FRSs), developed using deep learning models, are deployed worldwide for identity verification and facial attribute analysis. The performance of these models is determined by a complex interdependence among the model architecture, optimization/loss function and datasets. Although FRSs have surpassed human-level accuracy, they continue to be disparate against certain demographics. Due to the ubiquity of applications, it is extremely important to understand the impact of the three components -- model architecture, loss function and face image dataset on the accuracy-disparity trade-off to design better, unbiased platforms. In this work, we perform an in-depth analysis of three FRSs for the task of gender prediction, with various architectural modifications resulting in ten deep-learning models coupled with four loss functions and benchmark them on seven face datasets across 266 evaluation configurations. Our results show that all three components have an individual as well as a combined impact on both accuracy and disparity. We identify that datasets have an inherent property that causes them to perform similarly across models, independent of the choice of loss functions. Moreover, the choice of dataset determines the model's perceived bias -- the same model reports bias in opposite directions for three gender-balanced datasets of ``in-the-wild'' face images of popular individuals. Studying the facial embeddings shows that the models are unable to generalize a uniform definition of what constitutes a ``female face'' as opposed to a ``male face'', due to dataset diversity. We provide recommendations to model developers on using our study as a blueprint for model development and subsequent deployment.
Thank you to arXiv for use of its open access interoperability. PaperDance 不是 arXiv 官方产品;中文卡片由大模型生成,请以原文为准。