List of Articles Saeedeh Rajaee Harandi Article 1 - A RFMV Model and Customer Segmentation Based on Variety of Products 10.7508/jist.2017.19.002 Saman Qadaki Moghaddam Neda Abdolvand Saeedeh Rajaee Harandi Journal of Information Systems and Telecommunication (JIST) , Issue 3 , Year 5 , Summer 2017 Article 2 - An Improved Sentiment Analysis Algorithm Based on Appraisal Theory and Fuzzy Logic 10.7508/jist.2018.02.004 Azadeh Roustakiani Neda Abdolvand Saeideh Rajaei Harandi Journal of Information Systems and Telecommunication (JIST) , Issue 2 , Year 6 , Spring 2018