12/9/2025

 12/9/2025

Today's main task is to review the ARIMA and SARIMA scripts I wrote previously, looking for areas for improvement in parameter selection, data preprocessing, and seasonality settings, in order to improve forecast accuracy and stability. However, ARIMA and SARIMA are more suitable for short-term forecasts because, when the forecast timeframe is too long, errors gradually accumulate, resulting in significant deviations in the results.

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21/3/2025

 21/3/2025 Continue to explore and test various sales forecasting methods, including using different time periods for forecasting, to find the most accurate forecasting method. Attend meetings in the afternoon to discuss inventory status during the promotion period with relevant teams (such as managers and executives), focusing on products that have already started or are about to start promotions, especially products that are at risk of being out of stock (OOS), and develop corresponding response strategies to ensure the smooth progress of promotions.
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19/3/2025

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