Haotao Wang, Chaowei Xiao, Jean Kossaifi, Zhiding Yu, Anima Anandkumar, and Zhangyang Wang

In NeurIPS 2021

We propose AugMax, a data augmentation framework to unify the diversity and hardness. Being a stronger form of data augmentation, AugMax leads to a significantly augmented input distribution which makes model training more challenging. To solve this problem, we further design a disentangled normalization module, termed DuBIN (Dual-Batch-and-Instance Normalization) that disentangles the instance-wise feature heterogeneity arising from AugMax. AugMax-DuBIN leads to significantly improved out-of-distribution robustness, outperforming prior arts by 3.03%, 3.49%, 1.82% and 0.71% on CIFAR10-C, CIFAR100-C, Tiny ImageNet-C and ImageNet-C.

AugMax achieves a unification between hard and diverse training samples.

AugMax achieves state-fo-the-art performance on CIFAR10-C, CIFAR100-C, Tiny ImageNet-C and ImageNet-C.

Assume all datasets are stored in <data_root_path>. For example, CIFAR-10 is in <data_root_path>/cifar-10-batches-py/ and ImageNet training set is in <data_root_path>/imagenet/train.

AugMax-DuBIN training on <dataset> with <backbone> (The outputs will be saved in <save_root_path>):

python augmax_training_ddp.py --gpu 0 --srp <where_you_save_the_outputs> --drp <data_root_path> --ds <dataset> --md <backbone> --Lambda <lambda_value> --steps <inner_max_step_number>

For example:

AugMax-DuBIN on CIFAR10 with ResNeXt29 (By default we use Lambda=10 on CIFAR10/100 and Tiny ImageNet.):

python augmax_training_ddp.py --gpu 0 --drp /ssd1/haotao/datasets --ds cifar10 --md ResNeXt29 --Lambda 10 --steps 10

AugMax-DuBIN on CIFAR100 with ResNet18 (We use Lambda=1 instead of Lambda=10 in this particular experiment, as noted in the paper.):

python augmax_training_ddp.py --gpu 0 --drp /ssd1/haotao/datasets --ds cifar100 --md ResNet18 --Lambda 1 --steps 10

AugMax-DuBIN on ImageNet with ResNet18 (By default we use Lambda=12 on ImageNet. On ImageNet, weight decay wd=1e-4 instead of the default value in the code, which is for CIFAR-level datasets.):

NCCL_P2P_DISABLE=1 python augmax_training_ddp.py --gpu 0 --drp /ssd1/haotao/datasets --ds IN --md ResNet18 --Lambda 12 -e 90 --wd 1e-4 --decay multisteps --de 30 60 --ddp --dist_url tcp://localhost:23456

AugMax-DuBIN + DeepAug on ImageNet with ResNet18:

NCCL_P2P_DISABLE=1 python augmax_training_ddp.py --gpu 0 --drp /ssd1/haotao/datasets --ds IN --md ResNet18 --deepaug --Lambda 12 -e 30 --wd 1e-4 --decay multisteps --de 10 20 --ddp --dist_url tcp://localhost:23456

The pretrained models are available on Google Drive.

To test the model trained on <dataset> with <backbone> and saved to <ckpt_path>:

python test.py --gpu 0 --ds <dataset> --drp <data_root_path> --md <backbone> --mode all --ckpt_path <ckpt_path>

For example:

python test.py --gpu 0 --ds cifar10 --drp /ssd1/haotao/datasets --md ResNet18_DuBIN --mode all --ckpt_path augmax_training/cifar10/ResNet18_DuBIN/fat-1-untargeted-5-0.1_Lambda10.0_e200-b256_sgd-lr0.1-m0.9-wd0.0005_cos

@inproceedings{wang2021augmax,
  title={AugMax: Adversarial Composition of Random Augmentations for Robust Training},
  author={Wang, Haotao and Xiao, Chaowei and Kossaifi, Jean and Yu, Zhiding and Anandkumar, Anima and Wang, Zhangyang},
  booktitle={NeurIPS},
  year={2021}
}