@article{JMLR:v18:15-376,
  author  = {Jie Chen and Haim Avron and Vikas Sindhwani},
  title   = {Hierarchically Compositional Kernels for Scalable Nonparametric Learning},
  journal = {Journal of Machine Learning Research},
  year    = {2017},
  volume  = {18},
  number  = {66},
  pages   = {1--42},
  url     = {http://jmlr.org/papers/v18/15-376.html}
}