@article{JMLR:v17:15-072,
  author  = {Cheng Tai and Weinan E},
  title   = {Multiscale Adaptive Representation of Signals: I. The Basic Framework},
  journal = {Journal of Machine Learning Research},
  year    = {2016},
  volume  = {17},
  number  = {140},
  pages   = {1--38},
  url     = {http://jmlr.org/papers/v17/15-072.html}
}