@misc{W3011574394,
  author = {Xipeng Qiu and Tianxiang Sun and Yige Xu and Yunfan Shao and Ning Dai and Xuanjing Huang},
  title = {Pre-trained models for natural language processing: A survey},
  year = {2020},
  howpublished = {Science China Technological Sciences},
  doi = {https://doi.org/10.1007/s11431-020-1647-3}
}