@article{JMLR:v21:19-290,
  author  = {Romain Azaïs and Florian Ingels},
  title   = {The weight function in the subtree kernel is decisive},
  journal = {Journal of Machine Learning Research},
  year    = {2020},
  volume  = {21},
  number  = {67},
  pages   = {1--36},
  url     = {http://jmlr.org/papers/v21/19-290.html}
}