Although data augmentation is a powerful technique for improving the performance of image classification tasks, it is difficult to identify the best augmentation policy. The optimal augmentation policy, which is the latent variable, cannot be directly observed. To address this problem, this study proposes $\textit{LatentAugment}$, which estimates the latent probability of optimal augmentation. The proposed method is appealing in that it can dynamically optimize the augmentation strategies for each input and model parameter in learning iterations. Theoretical analysis shows that LatentAugment is a general model that includes other augmentation methods as special cases, and it is simple and computationally efficient in comparison with existing augmentation methods. Experimental results show that the proposed LatentAugment has higher test accuracy than previous augmentation methods on the CIFAR-10, CIFAR-100, SVHN, and ImageNet datasets.

本文提出了一种名为LatentAugment的数据增强方法，通过动态优化输入和模型参数的增强策略来提高图像分类任务的测试精度，理论分析表明该方法是一种通用模型且相比现有数据增强方法更为简单高效，实验结果也验证了其在CIFAR-10，CIFAR-100，SVHN和ImageNet数据集上具有更高的测试精度。

LatentAugment: 动态优化数据增强的潜在概率