@article{theextendedlittlestonesdimensionfor,
  title = {The Extended Littlestone's Dimension for Learning with Mistakes and Abstentions},
  author = {Chicheng Zhang and Kamalika Chaudhuri},
  year = {2016},
  eprint = {1604.06162},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1604.06162v3},
}