@inproceedings{activelearningwithadriftingdistribution,
  title = {Active Learning with a Drifting Distribution},
  author = {Liu Yang},
  year = {2011},
  booktitle = {NeurIPS 2011 12},
  url = {http://papers.nips.cc/paper/4190-active-learning-with-a-drifting-distribution},
}