@article{JMLR:v20:17-681,
  author  = {Akshay Krishnamurthy and Alekh Agarwal and Tzu-Kuo Huang and Hal Daum{{\'e}} III and John Langford},
  title   = {Active Learning for Cost-Sensitive Classification},
  journal = {Journal of Machine Learning Research},
  year    = {2019},
  volume  = {20},
  number  = {65},
  pages   = {1--50},
  url     = {http://jmlr.org/papers/v20/17-681.html}
}