@InProceedings{xu-EtAl:2018:EMNLP1,
  author    = {Xu, Yang  and  Hong, Yu  and  Ruan, Huibin  and  Yao, Jianmin  and  Zhang, Min  and  Zhou, Guodong},
  title     = {Using active learning to expand training data for implicit discourse relation recognition},
  booktitle = {Proceedings of the 2018 Conference on Empirical Methods in Natural Language Processing},
  month     = {October-November},
  year      = {2018},
  address   = {Brussels, Belgium},
  publisher = {Association for Computational Linguistics},
  pages     = {725--731},
  url       = {http://www.aclweb.org/anthology/D18-1079}
}