@article{hierarchicalrankingforanswerselection,
  title = {Hierarchical Ranking for Answer Selection},
  author = {Hang Gao and Mengting Hu and Renhong Cheng and Tiegang Gao},
  year = {2021},
  eprint = {2102.00677},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2102.00677v1},
}