Forecasting Model of Staple Food Prices Using Support Vector Regression with Optimized Parameters

Authors

  • Mungki Astiningrum Politeknik Negeri Malang
  • Vivi Nur Wijayaningrum Politeknik Negeri Malang
  • Ika Kusumaning Putri Politeknik Negeri Malang

DOI:

https://doi.org/10.26555/jiteki.v7i3.22010

Keywords:

crow search algorithm, estimation, prediction, time series

Abstract

The large number of Indonesians who consume rice as their primary food makes rice price a benchmark for determining the other staple food prices. The instability of rice prices due to climate change or other uncontrollable factors makes it difficult for Indonesians to estimate the rice prices, especially for the poor. This study proposes the usage of the Improved Crow Search Algorithm (ICSA) to optimize the Support Vector Regression (SVR) parameter in building a regression model to predict the price of staple foods. The forecasting process is carried out based on time series data of 11 staples for four years. The proposed ICSA optimizes the six parameters used in the SVR to form a regression model, consisting of lambda, epsilon, sigma, learning rate, soft margin constant, and the number of iterations. Algorithm performance is measured using MAPE and NRMSE by comparing the actual price of staple foods and forecasting results to get the error rate. With this parameter optimization mechanism, the forecasting results given are good enough with a small error value, in the form of MAPE of 17.081 and NRMSE of 1.594. A MAPE value between 10 and 20 indicates that the forecasting result is acceptable, while an NRMSE value of less than 10 indicates that the forecasting accuracy is excellent. The improvised technique on Crow Search Algorithm is proven to improve the performance of Support Vector Regression in forecasting the price of staple foods.

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Published

2021-12-20

How to Cite

[1]
M. Astiningrum, V. N. Wijayaningrum, and I. K. Putri, “Forecasting Model of Staple Food Prices Using Support Vector Regression with Optimized Parameters”, J. Ilm. Tek. Elektro Komput. Dan Inform, vol. 7, no. 3, pp. 441–452, Dec. 2021.

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Vol. 7 No. 3 (2021): December

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