18/9/2025

 18/9/2025

My main task today is to compile a tool library to systematically document what I've learned during my six-month internship. This library covers common data filtering and cleaning methods in Python, modeling scripts for time series forecasting (such as Holt-Winters, ARIMA/SARIMA, XGBoost, and N-BEATS), and techniques used in feature engineering. I've also organized common Excel functions and formulas into notes for quick reference. This compilation will not only help me solve similar problems more efficiently in the future, but also provide a resource for the team to reference and reuse.

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