@article{
  author = {Roustakiani, Azadeh , Abdolvand, Neda, Rajaei Harandi, Saeideh},
  title = {An Improved Sentiment Analysis Algorithm based on Appraisal Theory and Fuzzy Logic},
  journal = {Journal of Information Systems and Telecommunication (JIST) },
  year = {2018},
  volume = {6},
  number = {22},
  pages = {88-94},
  doi = {10.7508/jist.2018.02.004}
}