@article{c2crscoarsetofinecontrastivelearning,
  title = {C2-CRS: Coarse-to-Fine Contrastive Learning for Conversational Recommender System},
  author = {Yuanhang Zhou and Kun Zhou and Wayne Xin Zhao and Cheng Wang and Peng Jiang and He Hu},
  year = {2022},
  eprint = {2201.02732},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2201.02732v3},
}