8/9/2025

 8/9/2025

Today, I continued to revise and optimize the summary, focusing on improving the explanation of the data analysis methods to make the overall content clearer. After completing the revisions, I began to learn how to use Excel functions, including common formulas such as VLOOKUP, INDEX, MATCH, and IF. I also tried to apply these functions to daily data analysis to improve the efficiency of data processing and filtering.

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10/6/2025

 10/6/2025 Today, i successfully completed the construction of the SARIMA model and began to apply it to the prediction of actual sales data. After model training, i generated sales forecasts for the next few days and compared them with the actual data to evaluate the accuracy of the model.
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22/5/2025

 22/5/2025 Continue to modify the analysis content based on the feedback from Supply Chain Executive, including optimizing the data display format, supplementing missing data fields, and reorganizing the analysis logic. While completing the modifications, also start preparing for the report to be given tomorrow and organize the required forecast model results.
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