@inproceedings{ctspatextsentimentpolarityprediction,
  title = {CT-SPA: Text sentiment polarity prediction model using semi-automatically expanded sentiment lexicon},
  author = {Tao-Hsing Chang and Ming-Jhih Lin and Chun-Hsien Chen and Shao-Yu Wang},
  year = {2015},
  booktitle = {WS 2015 7},
  url = {https://aclanthology.org/W15-3125},
}