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Boundary thickness

Boundary thickness and robustness in learning models

Introduction

This repository includes all necessary programs to reproduce the results of our NeurIPS paper Boundary thickness and robustness in learning models. The code has been tested on Python 3.7.4 with PyTorch 1.5.0 and torchvision 0.6.0.

Usage

Please use the following commands to download the repo and the example checkpoints.

mkdir Boundary_thickness_repo
cd Boundary_thickness_repo
mkdir data
git clone https://github.com/nsfzyzz/boundary_thickness.git
cd boundary_thickness/
./download/download_models.sh

Measure boundary thickness

To measure boundary thickness, please use the following command. If you don't give the arguments and directly use python measure_thickness.py, you will evaluate the downloaded example.

python measure_thickness.py --ckpt [Your_checkpoint_path] --arch [Your_model_choice]

Reproduce the boundary thickness experiment on different models

Please first download the pretrained models.

./download/download_pretrained_models.sh

Then, use the following command to evaluate the boundary thickness of all the downloaded models. For example, if you want to use GPUs 0 and 1, you can specify --available-gpus 0 1

python Reproduce_thickness_measurement_experiment.py --available-gpus [Your_GPUs]

Finally, use the following command to generate Figure 2 of our paper. You should be able to generate visualization/Fig2.png

python visualize_thickness_measurement_experiment.py

Train noisy mixup and other models

To train a model using noisy mixup, please use the following code.

python noisy_mixup.py --noise-type Noisy

To train a model using empirical risk minimization, please use the following code:

python train_models.py --saving-folder [Your_folder] --arch [Your_model_choice]

Some examples of evaluating robustness

Please use one of the following commands to evaluate the adversarial robustness of the downloaded checkpoint.

python test_pgd.py
python test_bb.py

We need CIFAR10-C and CIFAR100-C to evaluate ood robustness.

./download/prepare_cifar10C.sh

Please use the following command to evaluate the ood robustness of the downloaded checkpoint.

python test_ood.py

Some examples of 3D visualization

Please use the following code to visualize 3D decision boundary of a downloaded checkpoint.

python visualize_3D.py

The following ipynb checkpoint contains the experiment in the Appendix C of our paper, which uses a chessboard toy example to visualize boundary tilting.

jupyter notebook does-chess-board-have-boundary-tilting.ipynb

Citation

We appreciate it if you would please cite the following paper if you found the repository useful for your work:

@article{yang2020boundary,
  title={Boundary thickness and robustness in learning models},
  author={Yang, Yaoqing and Khanna, Rajiv and Yu, Yaodong and Gholami, Amir and Keutzer, Kurt and Gonzalez, Joseph E and Ramchandran, Kannan and Mahoney, Michael W},
  journal={Advances in Neural Information Processing Systems},
  volume={33},
  year={2020}
}

License

MIT

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[NeurIPS 2020] code for "Boundary thickness and robustness in learning models"

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