Hosseini Charyani, Alaleh, and Alireza Norouzi. 2020. “A Recommender System Based On Collaborative Filtering Using Polarity Improvement in Sentiment Analysis”. Majlesi Journal of Telecommunication Devices 9 (1), 9-15. http://journals.iaumajlesi.ac.ir/td/index/index.php/td/article/view/595.