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<h1 align="center">Out-of-distribution Detection Learning with Unreliable Out-of-distribution Sources</h1>

This repo contains the sample code of our proposed ATOL in our paper: Out-of-distribution Detection Learning with Unreliable Out-of-distribution Sources (NeurIPS 2023).

Required Packages

The following packages are required to be installed:

All of our experiments are conducted on NVIDIA Tesla A100 GPUs with Python 3.8, PyTorch 1.11, CUDA 12.0 and Torchvision 0.13.

Pretrained Models

For CIFAR-10/CIFAR-100, pretrained WRN models and data-generative models are provided in folder

./ckpt/

Datasets

Please download the datasets in folder

./../data/

CIFAR-10/100 as ID dataset

Test OOD Datasets

Fine-tuning and Testing

To train the ATOL model on CIFAR and ImageNet benckmarks, simply run:

CIFAR-10

python atol.py --dataset=cifar10 -b=256 -lr=0.005 --mean=5 --std=0.1 --ood_space_size=4 --trade_off=1

CIFAR-100

python atol.py --dataset=cifar100 -b=256 -lr=0.04 --mean=1.2 --std=0.5 --ood_space_size=4 --trade_off=5

Results

The key results on CIFAR benchmarks are listed in the following table.

Methods	CIFAR-10	CIFAR-10	CIFAR-100	CIFAR-100
	FPR95	AUROC	FRP95	AUROC
BoundaryGAN	55.60	86.46	76.72	75.79
ConfGAN	31.57	93.01	74.86	77.67
ManifoldGAN	26.68	94.09	73.54	77.40
G2D	31.83	91.74	70.73	79.03
CMG	39.83	92.83	79.60	77.51
ATOL	14.66	97.05	55.22	87.24

Citation

If you find our work useful, please kindly cite our paper.

@inproceedings{
zheng2023atol,
title={Out-of-distribution Detection Learning with Unreliable Out-of-distribution Sources},
author={Haotian Zheng and Qizhou Wang and Zhen Fang and Xiaobo Xia and Feng Liu and Tongliang Liu and Bo Han},
booktitle={NeurIPS},
year={2023},
url={https://openreview.net/forum?id=87Qnneer8l}
}