Peramalan Tren Penjualan pada Sistem Informasi Inventory Barang Diecast Menggunakan Support Vector Regression
Abstract
Inventory management of diecast products is crucial for Sada Hobby store. The challenge in managing inventory lies in the importation of goods from overseas, which often lacks a definite delivery time, resulting in stock delays. An effective forecasting model is needed to address this challenge, such as Support Vector Regression (SVR), which can handle non-linear data using ε-sensitive approach. The SVR model predicts sales for each month in the next year, with accuracy measured using Mean Squared Error (MSE). The research results show that the SVR model estimates sales to be 8,423 units with an MSE accuracy of 0.0018. Sales predictions are also made for the Tomica brand (2,423 units, MSE 0.0019), Hotwheels brand (1,299 units, MSE 0.091), and Majorette brand (360 units, MSE 1.244). Although the MSE for these brands is higher than the overall sales prediction, the results are still good. The brand-based prediction process requires comparisons with all other brands, while the overall sales prediction sums up the sales results from all brands.
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