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An Application on Borsa Istanbul (BIST) Using Models Modified with Fourier Series
Abstract
Predicting the future accurately is of vital importance in all disciplines, as well as in the field of social sciences. Especially today, due to the development of technology and the presence of package programs that can process huge data, it is a very important development for all fields, including econometrics, that we can reach more accurate estimates. As a result, it is a situation that is directly related to the decrease in the error rates of the forecasts and more accurate planning for the future. In this study, time series analyzes were made over the proportional changes of the closing values of the Borsa Istanbul (BIST30) index, that is, the monthly average closing values, and 24-month forecasts were calculated. For this purpose, in order to increase the accuracy of the prediction results of the classical ARIMA models and the models based on the Box-Cox transform, new prediction results were obtained with the models modified with the Fourier series. Mean square error (MSE), root mean square error (RMSE), mean absolute error (MAE) and mean absolute percent error (MAPE) performance criteria were used to evaluate the success of the established models. It was concluded that the model with the lowest value for MSE, RMSE, MAE and MAPE performance criteria was more successful than the other models. As a result, more successful results were obtained with more accurate estimation results, that is, with lower error rates.
Keywords
Kaynakça
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Ayrıntılar
Birincil Dil
Türkçe
Konular
Ekonomi
Bölüm
Araştırma Makalesi
Yayımlanma Tarihi
11 Ocak 2023
Gönderilme Tarihi
16 Ağustos 2022
Kabul Tarihi
6 Eylül 2022
Yayımlandığı Sayı
Yıl 1970 Cilt: 5 Sayı: 2