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[ICML 2021] This is the official github repo for training L_inf dist nets with high certified accuracy.

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L_inf-dist Net: Towards Certifying L-infinity Robustness using Neural Networks with L_inf-dist Neurons

Introduction

This is the official code for training the L_inf-dist net, a theoretically principled neural network that inherently resists L_inf-norm perturbations. We consistently achieve state-of-the-art performance on commonly used datasets: 93.09% certified accuracy on MNIST under eps = 0.3, 79.23% on Fashion-MNIST under eps = 0.1, 35.42% on CIFAR-10 under eps = 8/255 and 16.31% on TinyImageNet under eps = 1/255. Our paper has been accepted by ICML 2021.

2021.12.1 Update: We have released a better implementation of L_inf-dist Net with faster training and better certified accuracy. See the repository here. Our latest paper has been accepted by ICLR 2022.

Dependencies

  • Pytorch 1.6.0
  • Tensorboard (optional)

Getting Started with the Code

Installation

After cloning this repo into your computer, first run the following command to install the CUDA extension, which can speed up the training procedure considerably.

python setup.py install --user

Reproducing SOTA Results

In this repo, we provide complete training scripts to reproduce the results on MNIST, Fashion-MNIST and CIFAR-10 datasets in our paper. These scripts are in the command folder.

For example, to reproduce the results of CIFAR-10 using the $\ell_\infty$-dist Net alone, simply run

bash command/ell_inf_dist_net_cifar10.sh

To reproduce the results of CIFAR-10 using the $\ell_\infty$-dist Net+MLP, simply run

bash command/ell_inf_dist_net++_cifar10.sh

For TinyImageNet dataset, the dataset can be download from http://cs231n.stanford.edu/tiny-imagenet-200.zip. Also you should run tiny_imagenet.sh to tidy the dataset.

Advanced Training Options

Multi-GPU Training

We also support multi-GPU training using distributed data parallel. By default the code will use all available GPUs for training. To use a single GPU, add the following parameter --gpu GPU_ID where GPU_ID is the GPU ID. You can also specify --world-size, --rank and --dist-url for advanced multi-GPU training.

Saving and Loading

The model is automatically saved when the training procedure finishes. Use --checkpoint model_file_name.pth to load a specified model before training. You can use --start-epoch NUM_EPOCHS to skip training and only test the model's performance for a pretrained model, where NUM_EPOCHS is the number of epochs in total.

Displaying training curves

By default the code will generate three files named train.log, test.log and log.txt which contain all training logs. If you want to further display training curves, you can add the parameter --visualize to show these curves using Tensorboard.

Contact

Please contact zhangbohang@pku.edu.cn if you have any question on our paper or the codes. Enjoy!

Citation

@inproceedings{zhang2021towards,
  title={Towards Certifying L-infinity Robustness using Neural Networks with L-inf-dist Neurons},
  author={Zhang, Bohang and Cai, Tianle and Lu, Zhou and He, Di and Wang, Liwei},
  booktitle={International Conference on Machine Learning},
  pages={12368--12379},
  year={2021},
  organization={PMLR}
}
@inproceedings{zhang2022boosting,
  title={Boosting the Certified Robustness of L-infinity Distance Nets},
  author={Bohang Zhang and Du Jiang and Di He and Liwei Wang},
  booktitle={International Conference on Learning Representations},
  year={2022},
}

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[ICML 2021] This is the official github repo for training L_inf dist nets with high certified accuracy.

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