@article{ordinalconstrainedbinarycodelearningfor,
  title = {Ordinal Constrained Binary Code Learning for Nearest Neighbor Search},
  author = {Hong Liu and Rongrong Ji and Yongjian Wu and Feiyue Huang},
  year = {2016},
  eprint = {1611.06362},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1611.06362v1},
}