@article{JMLR:v17:15-630,
  author  = {Ji Liu and Xiaojin Zhu},
  title   = {The Teaching Dimension of Linear Learners},
  journal = {Journal of Machine Learning Research},
  year    = {2016},
  volume  = {17},
  number  = {162},
  pages   = {1--25},
  url     = {http://jmlr.org/papers/v17/15-630.html}
}