@article{newsmeetsmicrobloghashtagannotationvia,
  title = {News Meets Microblog: Hashtag Annotation via Retriever-Generator},
  author = {Xiuwen Zheng and Dheeraj Mekala and Amarnath Gupta and Jingbo Shang},
  year = {2021},
  eprint = {2104.08723},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2104.08723v1},
}