@inproceedings{aunifiedspanbasedapproachforopinion,
  title = {A Unified Span-Based Approach for Opinion Mining with Syntactic Constituents},
  author = {Qingrong Xia and Bo Zhang and Rui Wang and Zhenghua Li and Yue Zhang and Fei Huang and Luo Si and Min Zhang},
  year = {2021},
  booktitle = {NAACL 2021 4},
  url = {https://aclanthology.org/2021.naacl-main.144},
}