List of Articles Price Forecasting Open Access Article Abstract Page Full-Text 1 - Forecasting the Price of Natural Gas Using Developed Methods Based on Grays and Fractals Saeed Emami Koupaee Shiva Zamani A. Reza Heidarzadeh Hanzaee M. Reza Shahnazari Open Access Article Abstract Page Full-Text 2 - عنوان مقاله / English Daily Stock Price Movement Prediction Using Sentiment text mining of social network and data mining of Technical indicators Kamel Ebrahimian ebrahim abbasi Akbar Alam tabriz Amir Mohammadzadeh Open Access Article Abstract Page Full-Text 3 - Optimizing the Prediction Model of Stock Price in Pharmaceutical Companies Using Multiple Objective Particle Swarm Optimization Algorithm (MOPSO) Ali Khazaei Babak Haji Karimi Mohammad Mahdi Mozaffari 10.22094/joie.2020.677889 Open Access Article Abstract Page Full-Text 4 - Development of an evolutionary fuzzy expert system for estimating future behavior of stock price Azam Goodarzi Amirhossein Amiri Shervin Asadzadeh Farhad Mehmanpazir Shahrokh Asadi Open Access Article Abstract Page Full-Text 5 - A Hybrid GA-Modified Harvey Model for Short-term Forecasting of Day-ahead Electricity Price and Electricity Load Mehdi Abroon Alireza Jahangiri Ahmad Ghaderi Shamim Open Access Article Abstract Page Full-Text 6 - Stock price prediction based on LM-BP neural network and over-point estimation by counting time intervals: Evidence from the Stock Exchange Mohammadreza Vatanparast masoud asadi Shaban Mohammadi abbas babaei