@article{JMLR:v22:20-1462,
  author  = {Steven Siwei Ye and Oscar Hernan Madrid Padilla},
  title   = {Non-parametric Quantile Regression via the K-NN Fused Lasso},
  journal = {Journal of Machine Learning Research},
  year    = {2021},
  volume  = {22},
  number  = {111},
  pages   = {1--38},
  url     = {http://jmlr.org/papers/v22/20-1462.html}
}