@article{opensetadversarialexamples,
  title = {Query Attack via Opposite-Direction Feature:Towards Robust Image Retrieval},
  author = {Zhedong Zheng and Liang Zheng and Yi Yang and Fei Wu},
  year = {2018},
  eprint = {1809.02681},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1809.02681v2},
}