Setiadi, Yosef Kely (2023) PERAMALAN HARGA BESI PADA PT. WIJAYA KARYA DENGAN METODE DERET FOURIER. S2 thesis, Universitas Atma Jaya Yogyakarta.
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Abstract
This research is the development of a forecast model according to the needs of PT. Wijaya Karya (WIKA) to support the improvement of the steel price forecasting and analysis process. The purpose of the forecast model is to create efficiency and effectiveness as well as accountability in the inventory system through electronic media. The development of the forecast model uses the Fourier series method to predict steel prices by including the influence of billet prices and the Mid BI rate. To measure the performance of forecasting, the Mean Absolute Percentage Error (MAPE) is used and the MAPE value is 0.48%. Based on these results, it is proven that statistically the model developed in this study is suitable to describe the pattern of fluctuations in steel prices.
| Item Type: | Thesis (S2) |
|---|---|
| Uncontrolled Keywords: | Fourier series, forecasting, steel price, MAPE |
| Subjects: | Magister Teknik Informatika > Intelligent Informatic |
| Divisions: | Pasca Sarjana > Magister Teknik Informatika |
| Depositing User: | Editor 3 uajy |
| Date Deposited: | 02 Mar 2023 12:04 |
| Last Modified: | 02 Mar 2023 12:04 |
| URI: | http://e-journal.uajy.ac.id/id/eprint/28631 |
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