@article{JMLR:v22:19-924,
  author  = {Imtiaz Ahmed and Xia Ben Hu and Mithun P. Acharya and Yu Ding},
  title   = {Neighborhood Structure Assisted Non-negative Matrix Factorization and Its Application in Unsupervised Point-wise Anomaly Detection},
  journal = {Journal of Machine Learning Research},
  year    = {2021},
  volume  = {22},
  number  = {34},
  pages   = {1--32},
  url     = {http://jmlr.org/papers/v22/19-924.html}
}