@inproceedings{lou-etal-2022-spa,
    title = "Spa: On the Sparsity of Virtual Adversarial Training for Dependency Parsing",
    author = "Lou, Chao  and
      Han, Wenjuan  and
      Tu, Kewei",
    editor = "He, Yulan  and
      Ji, Heng  and
      Li, Sujian  and
      Liu, Yang  and
      Chang, Chua-Hui",
    booktitle = "Findings of the Association for Computational Linguistics: AACL-IJCNLP 2022",
    month = nov,
    year = "2022",
    address = "Online only",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/fix-sig-urls/2022.findings-aacl.2/",
    doi = "10.18653/v1/2022.findings-aacl.2",
    pages = "11--21"
}