Top 7 (Student Division) – SMBC Group GREEN×DATA Challenge for Recruiting 2025
The task focused on forecasting electricity prices in Spain using time-series data (energy generation + weather). My main approach included: - Data visualization & feature selection, reducing ~90 features down to 30–40. - Feature engineering with time-based variables, lag/diff/rolling windows. - SHAP-based feature importance for refinement. - Model training & ensembling with LightGBM and CatBoost.