A FORECASTING OF RUPIAH EXCHANGE RATE TO US DOLLAR BY USING MARKOV CHAIN AND CHENG METHODS
Abstract
As the fluctuation of the Rupiah exchange rate to US dollar plays an important role on economic in Indonesia, then in this paper we provide forecasting of Rupiah exchange rate to US dollar by using fuzzy time series methods. We especially apply the Markov Chain and Cheng methods. The data used are the daily middle exchange rate data of the Rupiah to US dollar from January 2, 2019, to December 31, 2024. Meanwhile, the main procedure involve fuzzification, defining fuzzy logical relationship, determining fuzzy logical relationship group, and defuzzification. The results provide forecasting with the value of MAPE of 0.26% for Markov chain method, and 0.17% for Cheng method. Hence, we conclude that the Cheng method provides a better performance in forecasting of Rupiah exchange rate to US dollar compared to that of Markov chain method.




