@article{activeandpassivelearningoflinear,
  title = {Active and passive learning of linear separators under log-concave distributions},
  author = {Maria Florina Balcan and Philip M. Long},
  year = {2012},
  eprint = {1211.1082},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1211.1082v3},
}