This is the official code for CgAT: Center-Guided Adversarial Training for Deep Hashing-Based Retrieval (WWW 2023).

In this paper, we present a min-max based Center-guided Adversarial Training, namely CgAT, to improve the robustness of deep hashing networks through worst adversarial examples. Our key idea is to formulate a hash code (dubbed center code) as a discriminative semantic representation of the original sample, which can be used to guide the generation of the powerful adversarial example and as an accurate optimization objective for adversarial training.

My dependencies are as follows:

• python 3.9.12
• pytorch 1.12.0
• torchvision 0.13.0
• pillow 9.0.1
• numpy 1.21.5
• cudatoolkit 11.3.1

Initialize the hyper-parameters in hashing.py following the paper, and then run

python hashing.py

Initialize the hyper-parameters in central_adv_train.py according to the paper, and then run

python central_adv_train.py

If you find this work is useful, please cite the following:

@inproceedings{wang2023cgat,
  title={CgAT: Center-Guided Adversarial Training for Deep Hashing-Based Retrieval},
  author={Wang, Xunguang and Lin, Yiqun and Li, Xiaomeng},
  booktitle={Proceedings of the ACM Web Conference (WWW)},
  year={2023}
}