@article{progressivehardcaseminingacrosspyramid,
  title = {Progressive Hard-case Mining across Pyramid Levels for Object Detection},
  author = {Binghong Wu and Yehui Yang and Dalu Yang and Junde Wu and Xiaorong Wang and Haifeng Huang and Lei Wang and Yanwu Xu},
  year = {2021},
  eprint = {2109.07217},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2109.07217v2},
}