@article{impossibletrianglewhatsnextforpre,
  title = {Impossible Triangle: What's Next for Pre-trained Language Models?},
  author = {Chenguang Zhu and Michael Zeng},
  year = {2022},
  eprint = {2204.06130},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2204.06130v2},
}