@article{imageordinalclassificationand,
  title = {Image Ordinal Classification and Understanding: Grid Dropout with Masking Label},
  author = {Chao Zhang and Ce Zhu and Jimin Xiao and Xun Xu and Yipeng Liu},
  year = {2018},
  eprint = {1805.02901},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1805.02901v1},
}