Deep neural networks are highly susceptible to learning biases in visual data. While various methods have been proposed to mitigate such bias, the majority require explicit knowledge of the biases present in the training data in order to mitigate. We argue the relevance of exploring methods which are completely ignorant of the presence of any bias, but are capable of identifying and mitigating them. Furthermore, we propose using Bayesian neural networks with an epistemic uncertainty-weighted loss function to dynamically identify potential bias in individual training samples and to weight them during training. We find a positive correlation between samples subject to bias and higher epistemic uncertainties. Finally, we show the method has potential to mitigate visual bias on a bias benchmark dataset and on a real-world face detection problem, and we consider the merits and weaknesses of our approach.

提出一种基于贝叶斯神经网络和认知不确定性加权损失函数的方法，动态识别可能训练样本中的偏见并在训练期间对其加权，以减弱深度神经网络在视觉数据中出现的学习偏见。在偏见基准数据集和实际面部检测问题上，展示了这种方法缓解视觉偏见的潜力，并考虑了方法的优点和缺点。

视觉偏差缓解的知识不确定性加权损失