@article{JMLR:v18:17-653,
  author  = {Qianxiao Li and Long Chen and Cheng Tai and Weinan E},
  title   = {Maximum Principle Based Algorithms for Deep Learning},
  journal = {Journal of Machine Learning Research},
  year    = {2018},
  volume  = {18},
  number  = {165},
  pages   = {1--29},
  url     = {http://jmlr.org/papers/v18/17-653.html}
}