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Data Scientist Intern
Samsung • Tiempo parcial
Dec 2022 - Aug 2023 • 8 mos
Spearheaded time series forecasting using ARIMA, Holt-Winters, and LSTM; improved model accuracy to 91%. Engineered preprocessing workflows including stationarity checks (ADF Test), seasonality decomposition, and outlier handling. Achieved forecasting accuracy with MAPE below 20% across retail, weather, and energy domains.