@article{pyramidhybridpoolingquantizationfor,
  title = {PHPQ: Pyramid Hybrid Pooling Quantization for Efficient Fine-Grained Image Retrieval},
  author = {Ziyun Zeng and Jinpeng Wang and Bin Chen and Tao Dai and Shu-Tao Xia and Zhi Wang},
  year = {2021},
  eprint = {2109.05206},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2109.05206v2},
}