@article{unsupervisedfeaturelearningbydeepsparse,
  title = {Unsupervised Feature Learning by Deep Sparse Coding},
  author = {Yunlong He and Koray Kavukcuoglu and Yun Wang and Arthur Szlam and Yanjun Qi},
  year = {2013},
  eprint = {1312.5783},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1312.5783v1},
}