Bonnie Alexandra Kalinggo
ABSTRACT
The packaging industry is a dynamic sector of industry that is projected to grow by almost 3% per year for the next ten years. The plastic packaging industry that contributes to the growth of the packaging industry among other packaging materials has a ten-year compound annual growth rate of almost 5%, according to a 2016 report. While plastic is derived from oil, the raw material of plastic is a petrochemical product which is called resin. As resin price fluctuates with the price of global energy, demand and supply, macro-economics, etc, plastic converters as the ones converting resin to plastic products may suffer from the difficulty to pass the raw material price into the product price for customers. Based on the importance of a price forecast for resin as well as limited research in the area of petrochemical product price forecasting (except for the forecasting of oil price itself as the source of the petrochemical products), this paper aims to conduct time series forecasting on the price of resin as one of the petrochemical products. As time series forecasting ranges from traditional method to artificial intelligence method, this paper provides results from using neural network as an artificial intelligence method and the comparison to a traditional method, ARIMA. The result shows that the forecasting accuracy by using ARIMA is higher compared to NN for this particular resin price data. Future research is suggested to seek a time series forecasting method that can best represent the characteristic of resin price in terms of forecast accuracy.
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Index Terms
- Time Series Forecasting for Non-stationary Data: A Case Study of Petrochemical Product Price
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