1/4/2025

 1/4/2025

Public Holiday

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2/9/2025

 2/9/2025 My main task today was to complete and refine the presentation for tomorrow's presentation, ensuring that all slides were logically clear, data accurate, and case studies complete. I reviewed and fine-tuned each model's prediction results and their strengths and weaknesses, optimizing the presentation order and chart layout to more intuitively showcase the analysis results and learnings from my internship.
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4/9/2025

 4/9/2025 Today, I presented the content I prepared the day before to the team. I detailed the process of building the predictive model, its performance in different scenarios, and its limitations. During the presentation, the manager offered suggestions for improvements to some of the data processing methods and feature design.
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5/8/2025

 5/8/2025 Today's work progressed relatively smoothly, primarily focusing on tuning and optimizing the XGBoost model. The focus was on fine-tuning model parameters and re-examining input features, particularly after incorporating external variables like holidays, starting prices, and seasonality to observe how the model responds to sales trends.
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