@article{improvedalgorithmsforefficientactive,
  title = {Improved Algorithms for Efficient Active Learning Halfspaces with Massart and Tsybakov noise},
  author = {Chicheng Zhang and Yinan Li},
  year = {2021},
  eprint = {2102.05312},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2102.05312v2},
}