@article{atreesearchalgorithmforsequencelabeling,
  title = {A Tree Search Algorithm for Sequence Labeling},
  author = {Yadi Lao and Jun Xu and Yanyan Lan and Jiafeng Guo and Sheng Gao and Xue-Qi Cheng},
  year = {2018},
  eprint = {1804.10911},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1804.10911v2},
}